./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU --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 7efec3183b551b8159eccadb4807318ed392eb1a388f130f9498beabb74a52bc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:02:50,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:02:50,305 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-31 22:02:50,312 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:02:50,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:02:50,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:02:50,341 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:02:50,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:02:50,343 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:02:50,343 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:02:50,344 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:02:50,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:02:50,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:02:50,346 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:02:50,346 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:02:50,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:02:50,347 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:02:50,347 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:02:50,348 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:02:50,348 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:02:50,349 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:02:50,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:02:50,353 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:02:50,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:02:50,353 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:02:50,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:02:50,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:02:50,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:02:50,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:02:50,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:02:50,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:02:50,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:02:50,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:02:50,360 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:02:50,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:02:50,361 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:02:50,361 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:02:50,361 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:02:50,362 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:02:50,362 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_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7efec3183b551b8159eccadb4807318ed392eb1a388f130f9498beabb74a52bc [2024-10-31 22:02:50,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:02:50,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:02:50,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:02:50,744 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:02:50,758 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:02:50,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex.c Unable to find full path for "g++" [2024-10-31 22:02:53,074 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:02:53,428 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:02:53,431 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex.c [2024-10-31 22:02:53,446 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU/data/26ab7d6ca/5fbf218c5ac84e11a73d1ad425ac4852/FLAGf7fc08f5d [2024-10-31 22:02:53,679 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU/data/26ab7d6ca/5fbf218c5ac84e11a73d1ad425ac4852 [2024-10-31 22:02:53,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:02:53,684 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:02:53,686 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:02:53,686 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:02:53,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:02:53,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:02:53" (1/1) ... [2024-10-31 22:02:53,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eb36a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:53, skipping insertion in model container [2024-10-31 22:02:53,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:02:53" (1/1) ... [2024-10-31 22:02:53,746 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:02:54,004 WARN L251 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_bc5db730-0894-46dc-830f-3bc30651b45f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex.c[1249,1262] [2024-10-31 22:02:54,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:02:54,360 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:02:54,372 WARN L251 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_bc5db730-0894-46dc-830f-3bc30651b45f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_sym_ex.c[1249,1262] [2024-10-31 22:02:54,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:02:54,499 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:02:54,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:54 WrapperNode [2024-10-31 22:02:54,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:02:54,501 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:02:54,501 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:02:54,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:02:54,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:54" (1/1) ... [2024-10-31 22:02:54,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:54" (1/1) ... [2024-10-31 22:02:54,765 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1300 [2024-10-31 22:02:54,766 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:02:54,766 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:02:54,767 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:02:54,767 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:02:54,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:54" (1/1) ... [2024-10-31 22:02:54,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:54" (1/1) ... [2024-10-31 22:02:54,870 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:54" (1/1) ... [2024-10-31 22:02:55,021 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]. [2024-10-31 22:02:55,025 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:54" (1/1) ... [2024-10-31 22:02:55,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:54" (1/1) ... [2024-10-31 22:02:55,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:54" (1/1) ... [2024-10-31 22:02:55,116 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:54" (1/1) ... [2024-10-31 22:02:55,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:54" (1/1) ... [2024-10-31 22:02:55,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:54" (1/1) ... [2024-10-31 22:02:55,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:02:55,207 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:02:55,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:02:55,208 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:02:55,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:54" (1/1) ... [2024-10-31 22:02:55,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:02:55,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:02:55,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:02:55,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5db730-0894-46dc-830f-3bc30651b45f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:02:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:02:55,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:02:55,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:02:55,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:02:55,559 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:02:55,561 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:02:57,880 INFO L? ?]: Removed 798 outVars from TransFormulas that were not future-live. [2024-10-31 22:02:57,881 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:02:57,912 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:02:57,912 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:02:57,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:02:57 BoogieIcfgContainer [2024-10-31 22:02:57,913 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:02:57,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:02:57,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:02:57,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:02:57,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:02:53" (1/3) ... [2024-10-31 22:02:57,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706b7df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:02:57, skipping insertion in model container [2024-10-31 22:02:57,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:02:54" (2/3) ... [2024-10-31 22:02:57,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706b7df8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:02:57, skipping insertion in model container [2024-10-31 22:02:57,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:02:57" (3/3) ... [2024-10-31 22:02:57,925 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_sym_ex.c [2024-10-31 22:02:57,949 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:02:57,950 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:02:58,055 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:02:58,064 INFO L333 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, 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;@5f3c31f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:02:58,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:02:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 380 states have (on average 1.4973684210526317) internal successors, (569), 381 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-31 22:02:58,094 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:58,095 INFO L215 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] [2024-10-31 22:02:58,095 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:02:58,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:58,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1356964072, now seen corresponding path program 1 times [2024-10-31 22:02:58,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:58,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848349258] [2024-10-31 22:02:58,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:58,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:59,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:59,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848349258] [2024-10-31 22:02:59,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848349258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:59,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:59,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:02:59,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012053130] [2024-10-31 22:02:59,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:59,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:02:59,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:59,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:02:59,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:02:59,057 INFO L87 Difference]: Start difference. First operand has 382 states, 380 states have (on average 1.4973684210526317) internal successors, (569), 381 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:59,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:59,205 INFO L93 Difference]: Finished difference Result 717 states and 1071 transitions. [2024-10-31 22:02:59,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:02:59,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-10-31 22:02:59,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:59,239 INFO L225 Difference]: With dead ends: 717 [2024-10-31 22:02:59,239 INFO L226 Difference]: Without dead ends: 381 [2024-10-31 22:02:59,245 INFO L431 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 [2024-10-31 22:02:59,251 INFO L432 NwaCegarLoop]: 563 mSDtfsCounter, 0 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:59,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1683 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:02:59,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-10-31 22:02:59,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2024-10-31 22:02:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.4921052631578948) internal successors, (567), 380 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:59,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 567 transitions. [2024-10-31 22:02:59,342 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 567 transitions. Word has length 37 [2024-10-31 22:02:59,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:59,347 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 567 transitions. [2024-10-31 22:02:59,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:59,347 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 567 transitions. [2024-10-31 22:02:59,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-31 22:02:59,349 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:59,349 INFO L215 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] [2024-10-31 22:02:59,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:02:59,353 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:02:59,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:59,354 INFO L85 PathProgramCache]: Analyzing trace with hash 885482089, now seen corresponding path program 1 times [2024-10-31 22:02:59,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:59,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863203989] [2024-10-31 22:02:59,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:59,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:02:59,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:02:59,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863203989] [2024-10-31 22:02:59,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863203989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:59,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:59,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:02:59,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251037287] [2024-10-31 22:02:59,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:59,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:02:59,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:02:59,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:02:59,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:02:59,672 INFO L87 Difference]: Start difference. First operand 381 states and 567 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:59,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:59,733 INFO L93 Difference]: Finished difference Result 718 states and 1069 transitions. [2024-10-31 22:02:59,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:02:59,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-10-31 22:02:59,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:59,738 INFO L225 Difference]: With dead ends: 718 [2024-10-31 22:02:59,738 INFO L226 Difference]: Without dead ends: 383 [2024-10-31 22:02:59,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:02:59,744 INFO L432 NwaCegarLoop]: 563 mSDtfsCounter, 0 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:59,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1679 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:02:59,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-10-31 22:02:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2024-10-31 22:02:59,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.4895287958115184) internal successors, (569), 382 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 569 transitions. [2024-10-31 22:02:59,773 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 569 transitions. Word has length 38 [2024-10-31 22:02:59,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:59,774 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 569 transitions. [2024-10-31 22:02:59,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:59,775 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 569 transitions. [2024-10-31 22:02:59,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-31 22:02:59,777 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:59,777 INFO L215 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] [2024-10-31 22:02:59,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:02:59,778 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:02:59,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:59,781 INFO L85 PathProgramCache]: Analyzing trace with hash 582175249, now seen corresponding path program 1 times [2024-10-31 22:02:59,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:02:59,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73645260] [2024-10-31 22:02:59,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:59,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:02:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:00,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:00,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73645260] [2024-10-31 22:03:00,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73645260] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:00,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:00,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:00,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601522842] [2024-10-31 22:03:00,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:00,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:00,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:00,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:00,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:00,082 INFO L87 Difference]: Start difference. First operand 383 states and 569 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:00,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:00,282 INFO L93 Difference]: Finished difference Result 1027 states and 1528 transitions. [2024-10-31 22:03:00,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:03:00,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-10-31 22:03:00,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:00,285 INFO L225 Difference]: With dead ends: 1027 [2024-10-31 22:03:00,285 INFO L226 Difference]: Without dead ends: 690 [2024-10-31 22:03:00,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:00,288 INFO L432 NwaCegarLoop]: 552 mSDtfsCounter, 1449 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:00,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 1650 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:03:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2024-10-31 22:03:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 397. [2024-10-31 22:03:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.4873737373737375) internal successors, (589), 396 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 589 transitions. [2024-10-31 22:03:00,324 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 589 transitions. Word has length 39 [2024-10-31 22:03:00,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:00,325 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 589 transitions. [2024-10-31 22:03:00,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:00,328 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 589 transitions. [2024-10-31 22:03:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-10-31 22:03:00,334 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:00,334 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:00,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:03:00,335 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:00,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:00,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1451602872, now seen corresponding path program 1 times [2024-10-31 22:03:00,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:00,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6255716] [2024-10-31 22:03:00,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:00,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:03,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:03,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6255716] [2024-10-31 22:03:03,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6255716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:03,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:03,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:03,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410715324] [2024-10-31 22:03:03,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:03,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:03,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:03,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:03,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:03,415 INFO L87 Difference]: Start difference. First operand 397 states and 589 transitions. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:03,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:03,605 INFO L93 Difference]: Finished difference Result 1003 states and 1491 transitions. [2024-10-31 22:03:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:03:03,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 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 206 [2024-10-31 22:03:03,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:03,609 INFO L225 Difference]: With dead ends: 1003 [2024-10-31 22:03:03,609 INFO L226 Difference]: Without dead ends: 666 [2024-10-31 22:03:03,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:03,611 INFO L432 NwaCegarLoop]: 550 mSDtfsCounter, 1347 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 1647 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 [2024-10-31 22:03:03,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 1647 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:03:03,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-10-31 22:03:03,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 448. [2024-10-31 22:03:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 1.4809843400447427) internal successors, (662), 447 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 662 transitions. [2024-10-31 22:03:03,626 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 662 transitions. Word has length 206 [2024-10-31 22:03:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:03,627 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 662 transitions. [2024-10-31 22:03:03,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:03,627 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 662 transitions. [2024-10-31 22:03:03,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-10-31 22:03:03,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:03,631 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:03,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:03:03,632 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:03,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:03,633 INFO L85 PathProgramCache]: Analyzing trace with hash -736690901, now seen corresponding path program 1 times [2024-10-31 22:03:03,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:03,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790296881] [2024-10-31 22:03:03,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:03,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:06,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:06,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790296881] [2024-10-31 22:03:06,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790296881] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:06,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:06,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:06,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709774437] [2024-10-31 22:03:06,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:06,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:06,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:06,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:06,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:06,401 INFO L87 Difference]: Start difference. First operand 448 states and 662 transitions. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:06,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:06,599 INFO L93 Difference]: Finished difference Result 1003 states and 1489 transitions. [2024-10-31 22:03:06,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:03:06,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2024-10-31 22:03:06,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:06,605 INFO L225 Difference]: With dead ends: 1003 [2024-10-31 22:03:06,605 INFO L226 Difference]: Without dead ends: 666 [2024-10-31 22:03:06,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:06,608 INFO L432 NwaCegarLoop]: 549 mSDtfsCounter, 1281 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:06,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 1646 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:03:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-10-31 22:03:06,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 571. [2024-10-31 22:03:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.4824561403508771) internal successors, (845), 570 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:06,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 845 transitions. [2024-10-31 22:03:06,631 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 845 transitions. Word has length 208 [2024-10-31 22:03:06,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:06,633 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 845 transitions. [2024-10-31 22:03:06,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 5 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 845 transitions. [2024-10-31 22:03:06,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-10-31 22:03:06,639 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:06,639 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:06,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:03:06,640 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:06,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:06,642 INFO L85 PathProgramCache]: Analyzing trace with hash -2057904229, now seen corresponding path program 1 times [2024-10-31 22:03:06,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:06,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554921411] [2024-10-31 22:03:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:06,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:09,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:09,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554921411] [2024-10-31 22:03:09,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554921411] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:09,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:09,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:03:09,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269385123] [2024-10-31 22:03:09,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:09,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:03:09,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:09,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:03:09,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:09,313 INFO L87 Difference]: Start difference. First operand 571 states and 845 transitions. Second operand has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:09,571 INFO L93 Difference]: Finished difference Result 1011 states and 1500 transitions. [2024-10-31 22:03:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:03:09,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 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 209 [2024-10-31 22:03:09,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:09,579 INFO L225 Difference]: With dead ends: 1011 [2024-10-31 22:03:09,579 INFO L226 Difference]: Without dead ends: 674 [2024-10-31 22:03:09,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:03:09,584 INFO L432 NwaCegarLoop]: 546 mSDtfsCounter, 1301 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:09,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 2451 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:03:09,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-10-31 22:03:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 574. [2024-10-31 22:03:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.4816753926701571) internal successors, (849), 573 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:09,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 849 transitions. [2024-10-31 22:03:09,610 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 849 transitions. Word has length 209 [2024-10-31 22:03:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:09,612 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 849 transitions. [2024-10-31 22:03:09,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.857142857142858) internal successors, (209), 7 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 849 transitions. [2024-10-31 22:03:09,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-10-31 22:03:09,618 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:09,618 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:09,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:03:09,619 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:09,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:09,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1244200430, now seen corresponding path program 1 times [2024-10-31 22:03:09,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:09,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466303819] [2024-10-31 22:03:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:09,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:11,653 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:11,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:11,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466303819] [2024-10-31 22:03:11,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466303819] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:11,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:11,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:11,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662353308] [2024-10-31 22:03:11,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:11,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:11,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:11,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:11,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:11,658 INFO L87 Difference]: Start difference. First operand 574 states and 849 transitions. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:11,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:11,838 INFO L93 Difference]: Finished difference Result 1070 states and 1586 transitions. [2024-10-31 22:03:11,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:03:11,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 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 210 [2024-10-31 22:03:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:11,842 INFO L225 Difference]: With dead ends: 1070 [2024-10-31 22:03:11,842 INFO L226 Difference]: Without dead ends: 668 [2024-10-31 22:03:11,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:11,845 INFO L432 NwaCegarLoop]: 549 mSDtfsCounter, 1311 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:11,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 1646 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:03:11,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-10-31 22:03:11,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 574. [2024-10-31 22:03:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.4799301919720769) internal successors, (848), 573 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 848 transitions. [2024-10-31 22:03:11,863 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 848 transitions. Word has length 210 [2024-10-31 22:03:11,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:11,864 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 848 transitions. [2024-10-31 22:03:11,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:11,864 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 848 transitions. [2024-10-31 22:03:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-10-31 22:03:11,867 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:11,867 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:11,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:03:11,868 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:11,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:11,868 INFO L85 PathProgramCache]: Analyzing trace with hash 746144786, now seen corresponding path program 1 times [2024-10-31 22:03:11,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:11,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455311907] [2024-10-31 22:03:11,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:11,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:13,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:13,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455311907] [2024-10-31 22:03:13,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455311907] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:13,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:13,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:03:13,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449148918] [2024-10-31 22:03:13,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:13,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:13,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:13,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:13,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:13,956 INFO L87 Difference]: Start difference. First operand 574 states and 848 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:14,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:14,111 INFO L93 Difference]: Finished difference Result 1038 states and 1537 transitions. [2024-10-31 22:03:14,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:03:14,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 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 211 [2024-10-31 22:03:14,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:14,114 INFO L225 Difference]: With dead ends: 1038 [2024-10-31 22:03:14,114 INFO L226 Difference]: Without dead ends: 668 [2024-10-31 22:03:14,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:14,116 INFO L432 NwaCegarLoop]: 549 mSDtfsCounter, 1292 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:14,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 1646 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:03:14,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-10-31 22:03:14,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 574. [2024-10-31 22:03:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.4781849912739966) internal successors, (847), 573 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:14,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 847 transitions. [2024-10-31 22:03:14,135 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 847 transitions. Word has length 211 [2024-10-31 22:03:14,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:14,136 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 847 transitions. [2024-10-31 22:03:14,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:14,138 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 847 transitions. [2024-10-31 22:03:14,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-31 22:03:14,141 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:14,141 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:14,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:03:14,141 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:14,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash -451875766, now seen corresponding path program 1 times [2024-10-31 22:03:14,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:14,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364829155] [2024-10-31 22:03:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:14,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:16,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:16,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364829155] [2024-10-31 22:03:16,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364829155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:16,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:16,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:03:16,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363028643] [2024-10-31 22:03:16,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:16,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:03:16,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:16,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:03:16,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:16,113 INFO L87 Difference]: Start difference. First operand 574 states and 847 transitions. Second operand has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:16,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:16,347 INFO L93 Difference]: Finished difference Result 1042 states and 1542 transitions. [2024-10-31 22:03:16,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:03:16,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2024-10-31 22:03:16,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:16,352 INFO L225 Difference]: With dead ends: 1042 [2024-10-31 22:03:16,352 INFO L226 Difference]: Without dead ends: 676 [2024-10-31 22:03:16,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:03:16,356 INFO L432 NwaCegarLoop]: 546 mSDtfsCounter, 1312 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:16,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 2586 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:03:16,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2024-10-31 22:03:16,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 576. [2024-10-31 22:03:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 1.4765217391304348) internal successors, (849), 575 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:16,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 849 transitions. [2024-10-31 22:03:16,376 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 849 transitions. Word has length 212 [2024-10-31 22:03:16,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:16,377 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 849 transitions. [2024-10-31 22:03:16,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:16,377 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 849 transitions. [2024-10-31 22:03:16,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-10-31 22:03:16,380 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:16,380 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:16,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:03:16,381 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:03:16,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash -458312135, now seen corresponding path program 1 times [2024-10-31 22:03:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:16,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261493195] [2024-10-31 22:03:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat