./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_ibuf.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_ibuf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme --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 21d3b5f5f45e838fe2a280802b5788520d014c57271d384acd297e13beb553d8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:55:10,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:55:10,226 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 11:55:10,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:55:10,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:55:10,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:55:10,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:55:10,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:55:10,286 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:55:10,291 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:55:10,292 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:55:10,293 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:55:10,294 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:55:10,296 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:55:10,297 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:55:10,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:55:10,298 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:55:10,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:55:10,299 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:55:10,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:55:10,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:55:10,301 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:55:10,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:55:10,302 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:55:10,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:55:10,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:55:10,304 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:55:10,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:55:10,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:10,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:55:10,307 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:55:10,307 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:55:10,307 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:55:10,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:55:10,308 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:55:10,308 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:55:10,308 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:55:10,309 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:55:10,309 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:55:10,309 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_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21d3b5f5f45e838fe2a280802b5788520d014c57271d384acd297e13beb553d8 [2023-11-26 11:55:10,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:55:10,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:55:10,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:55:10,698 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:55:10,698 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:55:10,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_ibuf.c [2023-11-26 11:55:13,909 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:55:14,333 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:55:14,333 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_ibuf.c [2023-11-26 11:55:14,346 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme/data/4a3351144/7be62508bd93408293e71873227ea109/FLAG5624ed737 [2023-11-26 11:55:14,367 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme/data/4a3351144/7be62508bd93408293e71873227ea109 [2023-11-26 11:55:14,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:55:14,376 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:55:14,378 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:14,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:55:14,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:55:14,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c25136e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14, skipping insertion in model container [2023-11-26 11:55:14,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,436 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:14,638 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_3f368505-74d5-4c69-b2e4-110512f095dd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_ibuf.c[1254,1267] [2023-11-26 11:55:14,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:14,956 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:55:14,967 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_3f368505-74d5-4c69-b2e4-110512f095dd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_ibuf.c[1254,1267] [2023-11-26 11:55:15,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:15,154 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:55:15,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15 WrapperNode [2023-11-26 11:55:15,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:15,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:15,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:55:15,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:55:15,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,521 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1930 [2023-11-26 11:55:15,522 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:15,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:55:15,523 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:55:15,523 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:55:15,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,621 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,785 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]. [2023-11-26 11:55:15,786 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,786 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,862 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,894 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,938 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,978 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:55:15,980 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:55:15,980 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:55:15,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:55:15,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (1/1) ... [2023-11-26 11:55:15,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:16,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:16,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:55:16,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f368505-74d5-4c69-b2e4-110512f095dd/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:55:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:55:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:55:16,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:55:16,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:55:16,384 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:55:16,391 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:55:18,651 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:55:18,718 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:55:18,718 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:55:18,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:18 BoogieIcfgContainer [2023-11-26 11:55:18,719 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:55:18,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:55:18,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:55:18,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:55:18,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:55:14" (1/3) ... [2023-11-26 11:55:18,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a27a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:18, skipping insertion in model container [2023-11-26 11:55:18,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:15" (2/3) ... [2023-11-26 11:55:18,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a27a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:18, skipping insertion in model container [2023-11-26 11:55:18,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:18" (3/3) ... [2023-11-26 11:55:18,731 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_ibuf.c [2023-11-26 11:55:18,753 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:55:18,754 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:55:18,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:55:18,829 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;@f7d6242, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:55:18,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:55:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 410 states, 408 states have (on average 1.6666666666666667) internal successors, (680), 409 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:18,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 11:55:18,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:18,849 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] [2023-11-26 11:55:18,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:18,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:18,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1347477357, now seen corresponding path program 1 times [2023-11-26 11:55:18,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:18,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601399926] [2023-11-26 11:55:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:18,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:20,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:20,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601399926] [2023-11-26 11:55:20,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601399926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:20,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:20,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:55:20,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541114644] [2023-11-26 11:55:20,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:20,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:55:20,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:20,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:55:20,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:20,068 INFO L87 Difference]: Start difference. First operand has 410 states, 408 states have (on average 1.6666666666666667) internal successors, (680), 409 states have internal predecessors, (680), 0 states have call successors, (0), 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 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:20,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:20,299 INFO L93 Difference]: Finished difference Result 1214 states and 2018 transitions. [2023-11-26 11:55:20,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:55:20,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-11-26 11:55:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:20,327 INFO L225 Difference]: With dead ends: 1214 [2023-11-26 11:55:20,327 INFO L226 Difference]: Without dead ends: 811 [2023-11-26 11:55:20,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:55:20,341 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 1856 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 2208 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 [2023-11-26 11:55:20,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 2208 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:20,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2023-11-26 11:55:20,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 411. [2023-11-26 11:55:20,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 410 states have (on average 1.6560975609756097) internal successors, (679), 410 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:20,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 679 transitions. [2023-11-26 11:55:20,439 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 679 transitions. Word has length 52 [2023-11-26 11:55:20,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:20,440 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 679 transitions. [2023-11-26 11:55:20,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 679 transitions. [2023-11-26 11:55:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 11:55:20,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:20,445 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] [2023-11-26 11:55:20,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:55:20,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:20,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:20,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1402384667, now seen corresponding path program 1 times [2023-11-26 11:55:20,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:20,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416512855] [2023-11-26 11:55:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:20,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:21,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:21,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416512855] [2023-11-26 11:55:21,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416512855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:21,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:21,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:55:21,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383922066] [2023-11-26 11:55:21,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:21,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:21,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:21,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:21,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:21,291 INFO L87 Difference]: Start difference. First operand 411 states and 679 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:21,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:21,515 INFO L93 Difference]: Finished difference Result 1222 states and 2018 transitions. [2023-11-26 11:55:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:55:21,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-26 11:55:21,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:21,522 INFO L225 Difference]: With dead ends: 1222 [2023-11-26 11:55:21,522 INFO L226 Difference]: Without dead ends: 818 [2023-11-26 11:55:21,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:55:21,525 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 1916 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:21,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 2130 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:21,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-11-26 11:55:21,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 413. [2023-11-26 11:55:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.6529126213592233) internal successors, (681), 412 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:21,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 681 transitions. [2023-11-26 11:55:21,544 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 681 transitions. Word has length 53 [2023-11-26 11:55:21,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:21,544 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 681 transitions. [2023-11-26 11:55:21,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:21,545 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 681 transitions. [2023-11-26 11:55:21,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-26 11:55:21,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:21,547 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] [2023-11-26 11:55:21,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:55:21,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:21,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:21,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2031031125, now seen corresponding path program 1 times [2023-11-26 11:55:21,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:21,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209998162] [2023-11-26 11:55:21,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:21,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:22,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:22,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:22,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209998162] [2023-11-26 11:55:22,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209998162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:22,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:22,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:22,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476888399] [2023-11-26 11:55:22,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:22,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:22,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:22,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:22,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:22,200 INFO L87 Difference]: Start difference. First operand 413 states and 681 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:22,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:22,397 INFO L93 Difference]: Finished difference Result 1241 states and 2047 transitions. [2023-11-26 11:55:22,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:55:22,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-11-26 11:55:22,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:22,403 INFO L225 Difference]: With dead ends: 1241 [2023-11-26 11:55:22,404 INFO L226 Difference]: Without dead ends: 835 [2023-11-26 11:55:22,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:55:22,406 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 3337 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3337 SdHoareTripleChecker+Valid, 2681 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:22,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3337 Valid, 2681 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:22,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2023-11-26 11:55:22,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 431. [2023-11-26 11:55:22,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.6488372093023256) internal successors, (709), 430 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 709 transitions. [2023-11-26 11:55:22,425 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 709 transitions. Word has length 54 [2023-11-26 11:55:22,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:22,426 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 709 transitions. [2023-11-26 11:55:22,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:22,426 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 709 transitions. [2023-11-26 11:55:22,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 11:55:22,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:22,428 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] [2023-11-26 11:55:22,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:55:22,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:22,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:22,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1184427357, now seen corresponding path program 1 times [2023-11-26 11:55:22,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:22,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070421478] [2023-11-26 11:55:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:22,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:22,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:22,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070421478] [2023-11-26 11:55:22,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070421478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:22,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:22,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:55:22,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284061736] [2023-11-26 11:55:22,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:22,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:55:22,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:22,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:55:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:55:22,940 INFO L87 Difference]: Start difference. First operand 431 states and 709 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:23,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:23,201 INFO L93 Difference]: Finished difference Result 1633 states and 2691 transitions. [2023-11-26 11:55:23,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:55:23,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-11-26 11:55:23,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:23,234 INFO L225 Difference]: With dead ends: 1633 [2023-11-26 11:55:23,235 INFO L226 Difference]: Without dead ends: 1227 [2023-11-26 11:55:23,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:55:23,246 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 5167 mSDsluCounter, 2644 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5167 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:23,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5167 Valid, 3365 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:23,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2023-11-26 11:55:23,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 451. [2023-11-26 11:55:23,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.6444444444444444) internal successors, (740), 450 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:23,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 740 transitions. [2023-11-26 11:55:23,269 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 740 transitions. Word has length 55 [2023-11-26 11:55:23,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:23,270 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 740 transitions. [2023-11-26 11:55:23,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 740 transitions. [2023-11-26 11:55:23,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 11:55:23,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:23,277 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] [2023-11-26 11:55:23,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:55:23,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:23,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:23,278 INFO L85 PathProgramCache]: Analyzing trace with hash -602978037, now seen corresponding path program 1 times [2023-11-26 11:55:23,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:23,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861203074] [2023-11-26 11:55:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:23,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:23,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:23,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861203074] [2023-11-26 11:55:23,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861203074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:23,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:23,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:55:23,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36084288] [2023-11-26 11:55:23,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:23,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:55:23,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:23,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:55:23,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:23,781 INFO L87 Difference]: Start difference. First operand 451 states and 740 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:23,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:23,885 INFO L93 Difference]: Finished difference Result 1264 states and 2077 transitions. [2023-11-26 11:55:23,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:55:23,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-11-26 11:55:23,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:23,891 INFO L225 Difference]: With dead ends: 1264 [2023-11-26 11:55:23,891 INFO L226 Difference]: Without dead ends: 823 [2023-11-26 11:55:23,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:23,893 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 2657 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2657 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:23,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2657 Valid, 2009 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:23,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2023-11-26 11:55:23,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 451. [2023-11-26 11:55:23,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.6422222222222222) internal successors, (739), 450 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 739 transitions. [2023-11-26 11:55:23,914 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 739 transitions. Word has length 56 [2023-11-26 11:55:23,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:23,915 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 739 transitions. [2023-11-26 11:55:23,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 739 transitions. [2023-11-26 11:55:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:55:23,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:23,917 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] [2023-11-26 11:55:23,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:55:23,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:23,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:23,918 INFO L85 PathProgramCache]: Analyzing trace with hash 725201431, now seen corresponding path program 1 times [2023-11-26 11:55:23,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:23,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619758212] [2023-11-26 11:55:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:23,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:25,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:25,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619758212] [2023-11-26 11:55:25,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619758212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:25,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:25,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-26 11:55:25,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491780579] [2023-11-26 11:55:25,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:25,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 11:55:25,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:25,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 11:55:25,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:55:25,286 INFO L87 Difference]: Start difference. First operand 451 states and 739 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:27,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:27,156 INFO L93 Difference]: Finished difference Result 2892 states and 4744 transitions. [2023-11-26 11:55:27,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-26 11:55:27,157 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-11-26 11:55:27,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:27,170 INFO L225 Difference]: With dead ends: 2892 [2023-11-26 11:55:27,170 INFO L226 Difference]: Without dead ends: 2457 [2023-11-26 11:55:27,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2023-11-26 11:55:27,174 INFO L413 NwaCegarLoop]: 1302 mSDtfsCounter, 9243 mSDsluCounter, 11103 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9243 SdHoareTripleChecker+Valid, 12405 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:27,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9243 Valid, 12405 Invalid, 411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 11:55:27,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2023-11-26 11:55:27,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 463. [2023-11-26 11:55:27,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.6363636363636365) internal successors, (756), 462 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:27,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 756 transitions. [2023-11-26 11:55:27,212 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 756 transitions. Word has length 57 [2023-11-26 11:55:27,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:27,212 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 756 transitions. [2023-11-26 11:55:27,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:27,218 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 756 transitions. [2023-11-26 11:55:27,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:55:27,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:27,219 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] [2023-11-26 11:55:27,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:55:27,220 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:27,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:27,221 INFO L85 PathProgramCache]: Analyzing trace with hash 244121173, now seen corresponding path program 1 times [2023-11-26 11:55:27,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:27,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628942560] [2023-11-26 11:55:27,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:27,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:27,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:27,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628942560] [2023-11-26 11:55:27,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628942560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:27,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:27,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:55:27,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799934921] [2023-11-26 11:55:27,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:27,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:55:27,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:27,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:55:27,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:55:27,925 INFO L87 Difference]: Start difference. First operand 463 states and 756 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:28,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:28,169 INFO L93 Difference]: Finished difference Result 1651 states and 2715 transitions. [2023-11-26 11:55:28,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:55:28,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-11-26 11:55:28,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:28,178 INFO L225 Difference]: With dead ends: 1651 [2023-11-26 11:55:28,178 INFO L226 Difference]: Without dead ends: 1245 [2023-11-26 11:55:28,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:55:28,181 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 5100 mSDsluCounter, 2739 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5100 SdHoareTripleChecker+Valid, 3489 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:28,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5100 Valid, 3489 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2023-11-26 11:55:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 486. [2023-11-26 11:55:28,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 1.6309278350515464) internal successors, (791), 485 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:28,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 791 transitions. [2023-11-26 11:55:28,206 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 791 transitions. Word has length 57 [2023-11-26 11:55:28,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:28,207 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 791 transitions. [2023-11-26 11:55:28,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:28,207 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 791 transitions. [2023-11-26 11:55:28,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 11:55:28,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:28,208 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] [2023-11-26 11:55:28,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:55:28,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:28,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:28,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1478619029, now seen corresponding path program 1 times [2023-11-26 11:55:28,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:28,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370655122] [2023-11-26 11:55:28,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:28,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:29,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:29,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370655122] [2023-11-26 11:55:29,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370655122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:29,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:29,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:29,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82762143] [2023-11-26 11:55:29,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:29,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:29,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:29,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:29,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:29,021 INFO L87 Difference]: Start difference. First operand 486 states and 791 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:29,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:29,208 INFO L93 Difference]: Finished difference Result 1302 states and 2133 transitions. [2023-11-26 11:55:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:55:29,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2023-11-26 11:55:29,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:29,214 INFO L225 Difference]: With dead ends: 1302 [2023-11-26 11:55:29,214 INFO L226 Difference]: Without dead ends: 865 [2023-11-26 11:55:29,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:55:29,216 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 3338 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3338 SdHoareTripleChecker+Valid, 2699 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:29,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3338 Valid, 2699 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:29,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2023-11-26 11:55:29,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 486. [2023-11-26 11:55:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 1.6288659793814433) internal successors, (790), 485 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:29,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 790 transitions. [2023-11-26 11:55:29,238 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 790 transitions. Word has length 58 [2023-11-26 11:55:29,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:29,239 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 790 transitions. [2023-11-26 11:55:29,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:29,239 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 790 transitions. [2023-11-26 11:55:29,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-26 11:55:29,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:29,240 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] [2023-11-26 11:55:29,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:55:29,241 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:29,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:29,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1497888451, now seen corresponding path program 1 times [2023-11-26 11:55:29,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:29,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915207894] [2023-11-26 11:55:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:29,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:29,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:29,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915207894] [2023-11-26 11:55:29,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915207894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:29,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:29,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:55:29,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033846976] [2023-11-26 11:55:29,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:29,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:29,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:29,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:29,522 INFO L87 Difference]: Start difference. First operand 486 states and 790 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:29,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:29,556 INFO L93 Difference]: Finished difference Result 490 states and 794 transitions. [2023-11-26 11:55:29,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:29,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-11-26 11:55:29,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:29,562 INFO L225 Difference]: With dead ends: 490 [2023-11-26 11:55:29,563 INFO L226 Difference]: Without dead ends: 488 [2023-11-26 11:55:29,563 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 [2023-11-26 11:55:29,565 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 1 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2014 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 [2023-11-26 11:55:29,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2014 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:29,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-26 11:55:29,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2023-11-26 11:55:29,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.626283367556468) internal successors, (792), 487 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:29,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 792 transitions. [2023-11-26 11:55:29,584 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 792 transitions. Word has length 59 [2023-11-26 11:55:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:29,585 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 792 transitions. [2023-11-26 11:55:29,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 792 transitions. [2023-11-26 11:55:29,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 11:55:29,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:29,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:29,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:55:29,587 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:29,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash -808373039, now seen corresponding path program 1 times [2023-11-26 11:55:29,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:29,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846786627] [2023-11-26 11:55:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:29,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:30,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:30,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846786627] [2023-11-26 11:55:30,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846786627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:30,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:30,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:55:30,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102928677] [2023-11-26 11:55:30,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:30,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:55:30,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:30,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:55:30,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:55:30,151 INFO L87 Difference]: Start difference. First operand 488 states and 792 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:30,334 INFO L93 Difference]: Finished difference Result 1351 states and 2206 transitions. [2023-11-26 11:55:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:55:30,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-26 11:55:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:30,340 INFO L225 Difference]: With dead ends: 1351 [2023-11-26 11:55:30,340 INFO L226 Difference]: Without dead ends: 885 [2023-11-26 11:55:30,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:55:30,344 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 4010 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4010 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:30,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4010 Valid, 2728 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:30,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-11-26 11:55:30,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 485. [2023-11-26 11:55:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.621900826446281) internal successors, (785), 484 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 785 transitions. [2023-11-26 11:55:30,373 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 785 transitions. Word has length 60 [2023-11-26 11:55:30,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:30,374 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 785 transitions. [2023-11-26 11:55:30,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 785 transitions. [2023-11-26 11:55:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:55:30,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:30,383 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] [2023-11-26 11:55:30,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:55:30,384 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:30,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:30,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1164451855, now seen corresponding path program 1 times [2023-11-26 11:55:30,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:30,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631720695] [2023-11-26 11:55:30,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:30,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:30,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:30,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631720695] [2023-11-26 11:55:30,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631720695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:30,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:30,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:55:30,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125268192] [2023-11-26 11:55:30,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:30,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:55:30,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:30,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:55:30,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:30,781 INFO L87 Difference]: Start difference. First operand 485 states and 785 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:31,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:31,294 INFO L93 Difference]: Finished difference Result 2669 states and 4350 transitions. [2023-11-26 11:55:31,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 11:55:31,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-26 11:55:31,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:31,306 INFO L225 Difference]: With dead ends: 2669 [2023-11-26 11:55:31,306 INFO L226 Difference]: Without dead ends: 2221 [2023-11-26 11:55:31,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:55:31,309 INFO L413 NwaCegarLoop]: 1336 mSDtfsCounter, 4622 mSDsluCounter, 7289 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4622 SdHoareTripleChecker+Valid, 8625 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:31,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4622 Valid, 8625 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:31,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2221 states. [2023-11-26 11:55:31,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2221 to 495. [2023-11-26 11:55:31,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.6133603238866396) internal successors, (797), 494 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 797 transitions. [2023-11-26 11:55:31,388 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 797 transitions. Word has length 61 [2023-11-26 11:55:31,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:31,388 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 797 transitions. [2023-11-26 11:55:31,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:31,388 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 797 transitions. [2023-11-26 11:55:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:55:31,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:31,389 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] [2023-11-26 11:55:31,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:55:31,389 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:31,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:31,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1631631731, now seen corresponding path program 1 times [2023-11-26 11:55:31,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:31,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618338557] [2023-11-26 11:55:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:31,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:32,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:32,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618338557] [2023-11-26 11:55:32,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618338557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:32,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:32,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:55:32,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476720126] [2023-11-26 11:55:32,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:32,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:55:32,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:32,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:55:32,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:32,019 INFO L87 Difference]: Start difference. First operand 495 states and 797 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:32,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:32,322 INFO L93 Difference]: Finished difference Result 1325 states and 2155 transitions. [2023-11-26 11:55:32,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:55:32,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-11-26 11:55:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:32,327 INFO L225 Difference]: With dead ends: 1325 [2023-11-26 11:55:32,328 INFO L226 Difference]: Without dead ends: 875 [2023-11-26 11:55:32,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:55:32,330 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 4596 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4596 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:32,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4596 Valid, 2692 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:32,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-11-26 11:55:32,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 495. [2023-11-26 11:55:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.6093117408906883) internal successors, (795), 494 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:32,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 795 transitions. [2023-11-26 11:55:32,353 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 795 transitions. Word has length 61 [2023-11-26 11:55:32,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:32,354 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 795 transitions. [2023-11-26 11:55:32,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:32,354 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 795 transitions. [2023-11-26 11:55:32,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 11:55:32,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:32,355 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] [2023-11-26 11:55:32,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:55:32,356 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:32,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:32,356 INFO L85 PathProgramCache]: Analyzing trace with hash -368989621, now seen corresponding path program 1 times [2023-11-26 11:55:32,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:32,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146614914] [2023-11-26 11:55:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:32,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:33,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:33,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146614914] [2023-11-26 11:55:33,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146614914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:33,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:33,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:55:33,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521226109] [2023-11-26 11:55:33,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:33,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:55:33,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:33,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:55:33,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:55:33,268 INFO L87 Difference]: Start difference. First operand 495 states and 795 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:33,886 INFO L93 Difference]: Finished difference Result 1742 states and 2820 transitions. [2023-11-26 11:55:33,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:55:33,887 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-26 11:55:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:33,894 INFO L225 Difference]: With dead ends: 1742 [2023-11-26 11:55:33,895 INFO L226 Difference]: Without dead ends: 1272 [2023-11-26 11:55:33,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2023-11-26 11:55:33,897 INFO L413 NwaCegarLoop]: 1283 mSDtfsCounter, 4002 mSDsluCounter, 4607 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4002 SdHoareTripleChecker+Valid, 5890 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:33,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4002 Valid, 5890 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:55:33,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2023-11-26 11:55:33,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 497. [2023-11-26 11:55:33,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.6048387096774193) internal successors, (796), 496 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 796 transitions. [2023-11-26 11:55:33,925 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 796 transitions. Word has length 62 [2023-11-26 11:55:33,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:33,925 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 796 transitions. [2023-11-26 11:55:33,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:33,926 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 796 transitions. [2023-11-26 11:55:33,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 11:55:33,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:33,927 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] [2023-11-26 11:55:33,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:55:33,927 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:33,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:33,928 INFO L85 PathProgramCache]: Analyzing trace with hash -74831247, now seen corresponding path program 1 times [2023-11-26 11:55:33,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:33,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556866352] [2023-11-26 11:55:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:33,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:34,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:34,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556866352] [2023-11-26 11:55:34,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556866352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:34,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:34,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:34,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968332314] [2023-11-26 11:55:34,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:34,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:34,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:34,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:34,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:34,169 INFO L87 Difference]: Start difference. First operand 497 states and 796 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:34,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:34,351 INFO L93 Difference]: Finished difference Result 1324 states and 2143 transitions. [2023-11-26 11:55:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:55:34,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-26 11:55:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:34,357 INFO L225 Difference]: With dead ends: 1324 [2023-11-26 11:55:34,357 INFO L226 Difference]: Without dead ends: 853 [2023-11-26 11:55:34,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:55:34,359 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 3290 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:34,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3290 Valid, 2674 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:34,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2023-11-26 11:55:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 493. [2023-11-26 11:55:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.6016260162601625) internal successors, (788), 492 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 788 transitions. [2023-11-26 11:55:34,388 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 788 transitions. Word has length 62 [2023-11-26 11:55:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:34,389 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 788 transitions. [2023-11-26 11:55:34,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 788 transitions. [2023-11-26 11:55:34,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 11:55:34,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:34,390 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] [2023-11-26 11:55:34,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:55:34,391 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:34,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash -856475369, now seen corresponding path program 1 times [2023-11-26 11:55:34,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:34,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082552397] [2023-11-26 11:55:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:34,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:34,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082552397] [2023-11-26 11:55:34,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082552397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:34,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:34,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:55:34,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892898198] [2023-11-26 11:55:34,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:34,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:55:34,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:34,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:55:34,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:55:34,997 INFO L87 Difference]: Start difference. First operand 493 states and 788 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:36,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:36,016 INFO L93 Difference]: Finished difference Result 1806 states and 2928 transitions. [2023-11-26 11:55:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:55:36,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-26 11:55:36,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:36,025 INFO L225 Difference]: With dead ends: 1806 [2023-11-26 11:55:36,025 INFO L226 Difference]: Without dead ends: 1336 [2023-11-26 11:55:36,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2023-11-26 11:55:36,029 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 5930 mSDsluCounter, 5219 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5930 SdHoareTripleChecker+Valid, 5883 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:36,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5930 Valid, 5883 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:55:36,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2023-11-26 11:55:36,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 501. [2023-11-26 11:55:36,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.594) internal successors, (797), 500 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:36,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 797 transitions. [2023-11-26 11:55:36,061 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 797 transitions. Word has length 62 [2023-11-26 11:55:36,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:36,062 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 797 transitions. [2023-11-26 11:55:36,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:36,062 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 797 transitions. [2023-11-26 11:55:36,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-26 11:55:36,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:36,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:36,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:55:36,064 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:36,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:36,065 INFO L85 PathProgramCache]: Analyzing trace with hash 691526017, now seen corresponding path program 1 times [2023-11-26 11:55:36,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:36,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749070264] [2023-11-26 11:55:36,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:36,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:37,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:37,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749070264] [2023-11-26 11:55:37,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749070264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:37,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:37,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-26 11:55:37,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400574349] [2023-11-26 11:55:37,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:37,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 11:55:37,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:37,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 11:55:37,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:55:37,372 INFO L87 Difference]: Start difference. First operand 501 states and 797 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:37,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:37,629 INFO L93 Difference]: Finished difference Result 1334 states and 2148 transitions. [2023-11-26 11:55:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:55:37,630 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-11-26 11:55:37,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:37,635 INFO L225 Difference]: With dead ends: 1334 [2023-11-26 11:55:37,635 INFO L226 Difference]: Without dead ends: 845 [2023-11-26 11:55:37,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:55:37,637 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 3256 mSDsluCounter, 4680 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3256 SdHoareTripleChecker+Valid, 5353 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:37,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3256 Valid, 5353 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-11-26 11:55:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 487. [2023-11-26 11:55:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.6008230452674896) internal successors, (778), 486 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 778 transitions. [2023-11-26 11:55:37,662 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 778 transitions. Word has length 63 [2023-11-26 11:55:37,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:37,662 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 778 transitions. [2023-11-26 11:55:37,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:37,662 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 778 transitions. [2023-11-26 11:55:37,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 11:55:37,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:37,663 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] [2023-11-26 11:55:37,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:55:37,664 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:37,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:37,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1587980339, now seen corresponding path program 1 times [2023-11-26 11:55:37,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:37,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470535769] [2023-11-26 11:55:37,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:37,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:38,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:38,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470535769] [2023-11-26 11:55:38,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470535769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:38,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:38,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:55:38,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665196607] [2023-11-26 11:55:38,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:38,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:55:38,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:38,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:55:38,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:38,139 INFO L87 Difference]: Start difference. First operand 487 states and 778 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:38,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:38,732 INFO L93 Difference]: Finished difference Result 2677 states and 4345 transitions. [2023-11-26 11:55:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 11:55:38,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-26 11:55:38,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:38,746 INFO L225 Difference]: With dead ends: 2677 [2023-11-26 11:55:38,746 INFO L226 Difference]: Without dead ends: 2222 [2023-11-26 11:55:38,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:55:38,748 INFO L413 NwaCegarLoop]: 1352 mSDtfsCounter, 3974 mSDsluCounter, 6717 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3974 SdHoareTripleChecker+Valid, 8069 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:38,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3974 Valid, 8069 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:38,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2023-11-26 11:55:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 497. [2023-11-26 11:55:38,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.592741935483871) internal successors, (790), 496 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:38,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 790 transitions. [2023-11-26 11:55:38,783 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 790 transitions. Word has length 64 [2023-11-26 11:55:38,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:38,784 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 790 transitions. [2023-11-26 11:55:38,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:38,784 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 790 transitions. [2023-11-26 11:55:38,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 11:55:38,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:38,785 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] [2023-11-26 11:55:38,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 11:55:38,786 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:38,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:38,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1164333617, now seen corresponding path program 1 times [2023-11-26 11:55:38,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:38,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258354358] [2023-11-26 11:55:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:38,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:39,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258354358] [2023-11-26 11:55:39,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258354358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:39,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:39,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-26 11:55:39,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898660811] [2023-11-26 11:55:39,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:39,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:55:39,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:39,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:55:39,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:55:39,972 INFO L87 Difference]: Start difference. First operand 497 states and 790 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:41,260 INFO L93 Difference]: Finished difference Result 1342 states and 2168 transitions. [2023-11-26 11:55:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 11:55:41,261 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-26 11:55:41,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:41,266 INFO L225 Difference]: With dead ends: 1342 [2023-11-26 11:55:41,266 INFO L226 Difference]: Without dead ends: 876 [2023-11-26 11:55:41,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2023-11-26 11:55:41,269 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 5848 mSDsluCounter, 7291 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5848 SdHoareTripleChecker+Valid, 7961 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:41,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5848 Valid, 7961 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:55:41,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2023-11-26 11:55:41,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 492. [2023-11-26 11:55:41,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.5947046843177188) internal successors, (783), 491 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:41,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 783 transitions. [2023-11-26 11:55:41,292 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 783 transitions. Word has length 64 [2023-11-26 11:55:41,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:41,293 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 783 transitions. [2023-11-26 11:55:41,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 783 transitions. [2023-11-26 11:55:41,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-26 11:55:41,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:41,294 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] [2023-11-26 11:55:41,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 11:55:41,295 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:41,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:41,295 INFO L85 PathProgramCache]: Analyzing trace with hash -713719707, now seen corresponding path program 1 times [2023-11-26 11:55:41,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:41,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600939305] [2023-11-26 11:55:41,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:41,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:41,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:41,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600939305] [2023-11-26 11:55:41,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600939305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:41,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:41,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:55:41,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197113396] [2023-11-26 11:55:41,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:41,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:55:41,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:41,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:55:41,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:41,721 INFO L87 Difference]: Start difference. First operand 492 states and 783 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:42,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:42,289 INFO L93 Difference]: Finished difference Result 2726 states and 4413 transitions. [2023-11-26 11:55:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 11:55:42,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-26 11:55:42,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:42,318 INFO L225 Difference]: With dead ends: 2726 [2023-11-26 11:55:42,326 INFO L226 Difference]: Without dead ends: 2272 [2023-11-26 11:55:42,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:55:42,328 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 3980 mSDsluCounter, 5427 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3980 SdHoareTripleChecker+Valid, 6782 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:42,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3980 Valid, 6782 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:42,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2023-11-26 11:55:42,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 502. [2023-11-26 11:55:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 1.5888223552894212) internal successors, (796), 501 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:42,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 796 transitions. [2023-11-26 11:55:42,410 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 796 transitions. Word has length 65 [2023-11-26 11:55:42,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:42,410 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 796 transitions. [2023-11-26 11:55:42,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:42,411 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 796 transitions. [2023-11-26 11:55:42,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-26 11:55:42,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:42,412 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] [2023-11-26 11:55:42,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 11:55:42,412 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:42,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:42,413 INFO L85 PathProgramCache]: Analyzing trace with hash -786106265, now seen corresponding path program 1 times [2023-11-26 11:55:42,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:42,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587689433] [2023-11-26 11:55:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:42,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:43,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:43,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587689433] [2023-11-26 11:55:43,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587689433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:43,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:43,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:55:43,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715382432] [2023-11-26 11:55:43,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:43,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:55:43,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:43,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:55:43,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:43,011 INFO L87 Difference]: Start difference. First operand 502 states and 796 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:43,126 INFO L93 Difference]: Finished difference Result 1364 states and 2199 transitions. [2023-11-26 11:55:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:55:43,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-26 11:55:43,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:43,130 INFO L225 Difference]: With dead ends: 1364 [2023-11-26 11:55:43,130 INFO L226 Difference]: Without dead ends: 902 [2023-11-26 11:55:43,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:43,132 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 2638 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2638 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:43,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2638 Valid, 2016 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:55:43,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-11-26 11:55:43,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 502. [2023-11-26 11:55:43,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 1.5848303393213572) internal successors, (794), 501 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:43,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 794 transitions. [2023-11-26 11:55:43,158 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 794 transitions. Word has length 65 [2023-11-26 11:55:43,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:43,159 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 794 transitions. [2023-11-26 11:55:43,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:43,159 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 794 transitions. [2023-11-26 11:55:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-26 11:55:43,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:43,160 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] [2023-11-26 11:55:43,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 11:55:43,160 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:43,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:43,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1108086493, now seen corresponding path program 1 times [2023-11-26 11:55:43,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:43,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066263382] [2023-11-26 11:55:43,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:43,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:44,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:44,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066263382] [2023-11-26 11:55:44,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066263382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:44,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:44,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-26 11:55:44,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739874477] [2023-11-26 11:55:44,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:44,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-26 11:55:44,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:44,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-26 11:55:44,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:55:44,417 INFO L87 Difference]: Start difference. First operand 502 states and 794 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:45,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:45,571 INFO L93 Difference]: Finished difference Result 1771 states and 2864 transitions. [2023-11-26 11:55:45,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-26 11:55:45,572 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-11-26 11:55:45,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:45,575 INFO L225 Difference]: With dead ends: 1771 [2023-11-26 11:55:45,575 INFO L226 Difference]: Without dead ends: 1306 [2023-11-26 11:55:45,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=241, Invalid=815, Unknown=0, NotChecked=0, Total=1056 [2023-11-26 11:55:45,577 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 7742 mSDsluCounter, 13598 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7742 SdHoareTripleChecker+Valid, 14274 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:45,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7742 Valid, 14274 Invalid, 360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:55:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2023-11-26 11:55:45,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 497. [2023-11-26 11:55:45,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.5866935483870968) internal successors, (787), 496 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 787 transitions. [2023-11-26 11:55:45,608 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 787 transitions. Word has length 65 [2023-11-26 11:55:45,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:45,609 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 787 transitions. [2023-11-26 11:55:45,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:45,609 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 787 transitions. [2023-11-26 11:55:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 11:55:45,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:45,610 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] [2023-11-26 11:55:45,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 11:55:45,611 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:45,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:45,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1862088435, now seen corresponding path program 1 times [2023-11-26 11:55:45,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:45,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635331182] [2023-11-26 11:55:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:45,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:46,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:46,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635331182] [2023-11-26 11:55:46,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635331182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:46,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:46,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:55:46,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768908455] [2023-11-26 11:55:46,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:46,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:55:46,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:46,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:55:46,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:46,016 INFO L87 Difference]: Start difference. First operand 497 states and 787 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:46,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:46,580 INFO L93 Difference]: Finished difference Result 2751 states and 4444 transitions. [2023-11-26 11:55:46,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 11:55:46,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-26 11:55:46,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:46,586 INFO L225 Difference]: With dead ends: 2751 [2023-11-26 11:55:46,586 INFO L226 Difference]: Without dead ends: 2304 [2023-11-26 11:55:46,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:55:46,589 INFO L413 NwaCegarLoop]: 1366 mSDtfsCounter, 3966 mSDsluCounter, 6129 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3966 SdHoareTripleChecker+Valid, 7495 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:46,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3966 Valid, 7495 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:55:46,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2023-11-26 11:55:46,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 516. [2023-11-26 11:55:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 1.5805825242718448) internal successors, (814), 515 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 814 transitions. [2023-11-26 11:55:46,624 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 814 transitions. Word has length 66 [2023-11-26 11:55:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:46,624 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 814 transitions. [2023-11-26 11:55:46,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:46,624 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 814 transitions. [2023-11-26 11:55:46,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 11:55:46,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:46,625 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] [2023-11-26 11:55:46,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 11:55:46,626 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:46,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash -634613775, now seen corresponding path program 1 times [2023-11-26 11:55:46,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:46,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446155067] [2023-11-26 11:55:46,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:46,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:46,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:46,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:46,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446155067] [2023-11-26 11:55:46,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446155067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:46,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:46,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:46,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63804505] [2023-11-26 11:55:46,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:46,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:46,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:46,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:46,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:46,906 INFO L87 Difference]: Start difference. First operand 516 states and 814 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:47,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:47,058 INFO L93 Difference]: Finished difference Result 1387 states and 2230 transitions. [2023-11-26 11:55:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:55:47,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-26 11:55:47,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:47,061 INFO L225 Difference]: With dead ends: 1387 [2023-11-26 11:55:47,062 INFO L226 Difference]: Without dead ends: 919 [2023-11-26 11:55:47,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:55:47,063 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 3274 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3274 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:47,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3274 Valid, 2693 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2023-11-26 11:55:47,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 508. [2023-11-26 11:55:47,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.5739644970414202) internal successors, (798), 507 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:47,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 798 transitions. [2023-11-26 11:55:47,087 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 798 transitions. Word has length 66 [2023-11-26 11:55:47,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:47,087 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 798 transitions. [2023-11-26 11:55:47,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:47,088 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 798 transitions. [2023-11-26 11:55:47,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 11:55:47,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:47,089 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] [2023-11-26 11:55:47,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-26 11:55:47,089 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:47,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:47,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1160488561, now seen corresponding path program 1 times [2023-11-26 11:55:47,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:47,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436293332] [2023-11-26 11:55:47,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:47,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:47,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:47,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436293332] [2023-11-26 11:55:47,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436293332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:47,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:47,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-26 11:55:47,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775452629] [2023-11-26 11:55:47,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:47,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 11:55:47,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:47,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 11:55:47,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:55:47,891 INFO L87 Difference]: Start difference. First operand 508 states and 798 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:51,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:51,540 INFO L93 Difference]: Finished difference Result 4804 states and 7792 transitions. [2023-11-26 11:55:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-26 11:55:51,541 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-26 11:55:51,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:51,551 INFO L225 Difference]: With dead ends: 4804 [2023-11-26 11:55:51,551 INFO L226 Difference]: Without dead ends: 4341 [2023-11-26 11:55:51,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 852 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=759, Invalid=2901, Unknown=0, NotChecked=0, Total=3660 [2023-11-26 11:55:51,555 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 13096 mSDsluCounter, 20124 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13096 SdHoareTripleChecker+Valid, 20873 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:51,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13096 Valid, 20873 Invalid, 840 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 11:55:51,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2023-11-26 11:55:51,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 537. [2023-11-26 11:55:51,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.5708955223880596) internal successors, (842), 536 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 842 transitions. [2023-11-26 11:55:51,605 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 842 transitions. Word has length 66 [2023-11-26 11:55:51,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:51,605 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 842 transitions. [2023-11-26 11:55:51,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:51,606 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 842 transitions. [2023-11-26 11:55:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-26 11:55:51,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:51,607 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] [2023-11-26 11:55:51,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-26 11:55:51,607 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:51,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:51,608 INFO L85 PathProgramCache]: Analyzing trace with hash -392351477, now seen corresponding path program 1 times [2023-11-26 11:55:51,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:51,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638134762] [2023-11-26 11:55:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:51,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:51,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:51,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638134762] [2023-11-26 11:55:51,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638134762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:51,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:51,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:55:51,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957431681] [2023-11-26 11:55:51,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:51,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:55:51,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:51,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:55:51,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:51,956 INFO L87 Difference]: Start difference. First operand 537 states and 842 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:52,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:52,466 INFO L93 Difference]: Finished difference Result 2961 states and 4750 transitions. [2023-11-26 11:55:52,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 11:55:52,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-11-26 11:55:52,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:52,473 INFO L225 Difference]: With dead ends: 2961 [2023-11-26 11:55:52,473 INFO L226 Difference]: Without dead ends: 2481 [2023-11-26 11:55:52,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:55:52,475 INFO L413 NwaCegarLoop]: 1373 mSDtfsCounter, 3967 mSDsluCounter, 6212 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3967 SdHoareTripleChecker+Valid, 7585 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:52,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3967 Valid, 7585 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:52,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2023-11-26 11:55:52,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 557. [2023-11-26 11:55:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 1.5629496402877698) internal successors, (869), 556 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 869 transitions. [2023-11-26 11:55:52,510 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 869 transitions. Word has length 67 [2023-11-26 11:55:52,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:52,510 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 869 transitions. [2023-11-26 11:55:52,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:52,510 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 869 transitions. [2023-11-26 11:55:52,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-26 11:55:52,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:52,511 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] [2023-11-26 11:55:52,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-26 11:55:52,512 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:52,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:52,512 INFO L85 PathProgramCache]: Analyzing trace with hash 952612773, now seen corresponding path program 1 times [2023-11-26 11:55:52,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:52,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280186035] [2023-11-26 11:55:52,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:52,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:52,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280186035] [2023-11-26 11:55:52,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280186035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:52,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:52,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:55:52,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864593895] [2023-11-26 11:55:52,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:52,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:55:52,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:52,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:55:52,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:55:52,836 INFO L87 Difference]: Start difference. First operand 557 states and 869 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:53,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:53,084 INFO L93 Difference]: Finished difference Result 1991 states and 3183 transitions. [2023-11-26 11:55:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:55:53,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-11-26 11:55:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:53,089 INFO L225 Difference]: With dead ends: 1991 [2023-11-26 11:55:53,089 INFO L226 Difference]: Without dead ends: 1488 [2023-11-26 11:55:53,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:55:53,091 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 5242 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5242 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:53,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5242 Valid, 3418 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:53,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2023-11-26 11:55:53,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 551. [2023-11-26 11:55:53,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 550 states have (on average 1.5581818181818181) internal successors, (857), 550 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 857 transitions. [2023-11-26 11:55:53,131 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 857 transitions. Word has length 67 [2023-11-26 11:55:53,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:53,133 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 857 transitions. [2023-11-26 11:55:53,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:53,133 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 857 transitions. [2023-11-26 11:55:53,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-26 11:55:53,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:53,134 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] [2023-11-26 11:55:53,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-26 11:55:53,135 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:53,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:53,135 INFO L85 PathProgramCache]: Analyzing trace with hash -526364983, now seen corresponding path program 1 times [2023-11-26 11:55:53,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:53,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960509887] [2023-11-26 11:55:53,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:53,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat