./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label52.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label52.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7d08753ec3d09588e14fe223037879a9e4c26dd4e0293239a5101a4dc04bd1c9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:01:38,511 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:01:38,579 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:01:38,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:01:38,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:01:38,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:01:38,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:01:38,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:01:38,611 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:01:38,611 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:01:38,612 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:01:38,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:01:38,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:01:38,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:01:38,614 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:01:38,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:01:38,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:01:38,616 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:01:38,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:01:38,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:01:38,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:01:38,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:01:38,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:01:38,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:01:38,620 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:01:38,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:01:38,621 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:01:38,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:01:38,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:01:38,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:01:38,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:01:38,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:01:38,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:01:38,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:01:38,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:01:38,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:01:38,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:01:38,625 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:01:38,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:01:38,625 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:01:38,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:01:38,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:01:38,626 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_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d08753ec3d09588e14fe223037879a9e4c26dd4e0293239a5101a4dc04bd1c9 [2023-11-29 01:01:38,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:01:38,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:01:38,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:01:38,866 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:01:38,866 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:01:38,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/eca-rers2012/Problem19_label52.c [2023-11-29 01:01:41,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:01:42,101 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:01:42,102 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/sv-benchmarks/c/eca-rers2012/Problem19_label52.c [2023-11-29 01:01:42,137 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/data/c1bbf43ac/caa7fac9f72f47e2bbc272acae59d4fe/FLAG0365700dc [2023-11-29 01:01:42,150 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/data/c1bbf43ac/caa7fac9f72f47e2bbc272acae59d4fe [2023-11-29 01:01:42,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:01:42,153 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:01:42,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:01:42,155 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:01:42,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:01:42,159 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:01:42" (1/1) ... [2023-11-29 01:01:42,160 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4937503b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:42, skipping insertion in model container [2023-11-29 01:01:42,160 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:01:42" (1/1) ... [2023-11-29 01:01:42,380 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:01:42,658 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/sv-benchmarks/c/eca-rers2012/Problem19_label52.c[7226,7239] [2023-11-29 01:01:44,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:01:44,157 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:01:44,181 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/sv-benchmarks/c/eca-rers2012/Problem19_label52.c[7226,7239] [2023-11-29 01:01:45,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:01:45,169 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:01:45,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:45 WrapperNode [2023-11-29 01:01:45,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:01:45,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:01:45,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:01:45,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:01:45,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:45" (1/1) ... [2023-11-29 01:01:45,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:45" (1/1) ... [2023-11-29 01:01:46,039 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9426 [2023-11-29 01:01:46,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:01:46,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:01:46,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:01:46,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:01:46,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:45" (1/1) ... [2023-11-29 01:01:46,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:45" (1/1) ... [2023-11-29 01:01:46,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:45" (1/1) ... [2023-11-29 01:01:46,646 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:01:46,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:45" (1/1) ... [2023-11-29 01:01:46,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:45" (1/1) ... [2023-11-29 01:01:46,979 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:45" (1/1) ... [2023-11-29 01:01:47,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:45" (1/1) ... [2023-11-29 01:01:47,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:45" (1/1) ... [2023-11-29 01:01:47,096 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:45" (1/1) ... [2023-11-29 01:01:47,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:01:47,232 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:01:47,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:01:47,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:01:47,233 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:45" (1/1) ... [2023-11-29 01:01:47,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:01:47,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:01:47,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:01:47,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:01:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:01:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:01:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:01:47,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:01:47,389 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:01:47,391 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:01:56,147 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:01:56,239 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:01:56,240 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:01:56,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:01:56 BoogieIcfgContainer [2023-11-29 01:01:56,241 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:01:56,244 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:01:56,244 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:01:56,248 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:01:56,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:01:42" (1/3) ... [2023-11-29 01:01:56,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac792e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:01:56, skipping insertion in model container [2023-11-29 01:01:56,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:01:45" (2/3) ... [2023-11-29 01:01:56,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac792e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:01:56, skipping insertion in model container [2023-11-29 01:01:56,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:01:56" (3/3) ... [2023-11-29 01:01:56,251 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label52.c [2023-11-29 01:01:56,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:01:56,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:01:56,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:01:56,369 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b2a1fba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:01:56,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:01:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:56,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 01:01:56,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:56,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:56,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:01:56,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:56,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1130034352, now seen corresponding path program 1 times [2023-11-29 01:01:56,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:56,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926456217] [2023-11-29 01:01:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:56,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:56,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:56,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926456217] [2023-11-29 01:01:56,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926456217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:56,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:56,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:01:56,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589182963] [2023-11-29 01:01:56,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:56,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:01:56,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:56,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:01:56,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:01:56,605 INFO L87 Difference]: Start difference. First operand has 1686 states, 1684 states have (on average 1.902019002375297) internal successors, (3203), 1685 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:56,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:01:56,707 INFO L93 Difference]: Finished difference Result 3371 states and 6405 transitions. [2023-11-29 01:01:56,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:01:56,709 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-29 01:01:56,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:01:56,731 INFO L225 Difference]: With dead ends: 3371 [2023-11-29 01:01:56,732 INFO L226 Difference]: Without dead ends: 1684 [2023-11-29 01:01:56,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:01:56,742 INFO L413 NwaCegarLoop]: 3138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:01:56,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3138 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:01:56,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2023-11-29 01:01:56,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1684. [2023-11-29 01:01:56,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.8645276292335116) internal successors, (3138), 1683 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 3138 transitions. [2023-11-29 01:01:56,854 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 3138 transitions. Word has length 54 [2023-11-29 01:01:56,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:01:56,854 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 3138 transitions. [2023-11-29 01:01:56,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:01:56,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 3138 transitions. [2023-11-29 01:01:56,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-29 01:01:56,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:01:56,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:01:56,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:01:56,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:01:56,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:01:56,858 INFO L85 PathProgramCache]: Analyzing trace with hash 924998568, now seen corresponding path program 1 times [2023-11-29 01:01:56,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:01:56,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064461849] [2023-11-29 01:01:56,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:01:56,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:01:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:01:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:01:57,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:01:57,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064461849] [2023-11-29 01:01:57,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064461849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:01:57,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:01:57,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:01:57,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737626414] [2023-11-29 01:01:57,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:01:57,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:01:57,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:01:57,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:01:57,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:01:57,031 INFO L87 Difference]: Start difference. First operand 1684 states and 3138 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:04,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:02:04,713 INFO L93 Difference]: Finished difference Result 4811 states and 9064 transitions. [2023-11-29 01:02:04,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:02:04,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-29 01:02:04,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:02:04,734 INFO L225 Difference]: With dead ends: 4811 [2023-11-29 01:02:04,734 INFO L226 Difference]: Without dead ends: 3128 [2023-11-29 01:02:04,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:02:04,739 INFO L413 NwaCegarLoop]: 1324 mSDtfsCounter, 1552 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4269 mSolverCounterSat, 1473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 5742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1473 IncrementalHoareTripleChecker+Valid, 4269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:02:04,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 1543 Invalid, 5742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1473 Valid, 4269 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-29 01:02:04,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2023-11-29 01:02:04,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3107. [2023-11-29 01:02:04,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3106 states have (on average 1.601416613007083) internal successors, (4974), 3106 states have internal predecessors, (4974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:04,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 4974 transitions. [2023-11-29 01:02:04,804 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 4974 transitions. Word has length 54 [2023-11-29 01:02:04,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:02:04,804 INFO L495 AbstractCegarLoop]: Abstraction has 3107 states and 4974 transitions. [2023-11-29 01:02:04,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:04,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 4974 transitions. [2023-11-29 01:02:04,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 01:02:04,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:02:04,810 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:04,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:02:04,811 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:02:04,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:04,811 INFO L85 PathProgramCache]: Analyzing trace with hash -446851307, now seen corresponding path program 1 times [2023-11-29 01:02:04,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:04,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755757607] [2023-11-29 01:02:04,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:04,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:05,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:05,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755757607] [2023-11-29 01:02:05,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755757607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:02:05,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:02:05,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:02:05,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822762393] [2023-11-29 01:02:05,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:02:05,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:02:05,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:05,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:02:05,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:02:05,145 INFO L87 Difference]: Start difference. First operand 3107 states and 4974 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:15,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:02:15,898 INFO L93 Difference]: Finished difference Result 10358 states and 16186 transitions. [2023-11-29 01:02:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:02:15,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2023-11-29 01:02:15,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:02:15,932 INFO L225 Difference]: With dead ends: 10358 [2023-11-29 01:02:15,932 INFO L226 Difference]: Without dead ends: 7252 [2023-11-29 01:02:15,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:02:15,937 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 4322 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 9505 mSolverCounterSat, 1498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4322 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 11003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1498 IncrementalHoareTripleChecker+Valid, 9505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:02:15,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4322 Valid, 1290 Invalid, 11003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1498 Valid, 9505 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-11-29 01:02:15,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7252 states. [2023-11-29 01:02:16,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7252 to 7248. [2023-11-29 01:02:16,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7248 states, 7247 states have (on average 1.4503932661791086) internal successors, (10511), 7247 states have internal predecessors, (10511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7248 states to 7248 states and 10511 transitions. [2023-11-29 01:02:16,059 INFO L78 Accepts]: Start accepts. Automaton has 7248 states and 10511 transitions. Word has length 121 [2023-11-29 01:02:16,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:02:16,060 INFO L495 AbstractCegarLoop]: Abstraction has 7248 states and 10511 transitions. [2023-11-29 01:02:16,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:16,060 INFO L276 IsEmpty]: Start isEmpty. Operand 7248 states and 10511 transitions. [2023-11-29 01:02:16,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-11-29 01:02:16,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:02:16,068 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:16,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:02:16,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:02:16,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:16,069 INFO L85 PathProgramCache]: Analyzing trace with hash 821452705, now seen corresponding path program 1 times [2023-11-29 01:02:16,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:16,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477579203] [2023-11-29 01:02:16,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:16,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-29 01:02:16,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:16,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477579203] [2023-11-29 01:02:16,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477579203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:02:16,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:02:16,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:02:16,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830314084] [2023-11-29 01:02:16,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:02:16,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:02:16,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:16,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:02:16,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:02:16,858 INFO L87 Difference]: Start difference. First operand 7248 states and 10511 transitions. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:27,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:02:27,739 INFO L93 Difference]: Finished difference Result 17268 states and 24866 transitions. [2023-11-29 01:02:27,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:02:27,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 328 [2023-11-29 01:02:27,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:02:27,786 INFO L225 Difference]: With dead ends: 17268 [2023-11-29 01:02:27,786 INFO L226 Difference]: Without dead ends: 11386 [2023-11-29 01:02:27,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:02:27,795 INFO L413 NwaCegarLoop]: 1801 mSDtfsCounter, 3755 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9456 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 9886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 9456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:02:27,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 2155 Invalid, 9886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 9456 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-11-29 01:02:27,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11386 states. [2023-11-29 01:02:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11386 to 11366. [2023-11-29 01:02:28,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11366 states, 11365 states have (on average 1.328640563132424) internal successors, (15100), 11365 states have internal predecessors, (15100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11366 states to 11366 states and 15100 transitions. [2023-11-29 01:02:28,057 INFO L78 Accepts]: Start accepts. Automaton has 11366 states and 15100 transitions. Word has length 328 [2023-11-29 01:02:28,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:02:28,058 INFO L495 AbstractCegarLoop]: Abstraction has 11366 states and 15100 transitions. [2023-11-29 01:02:28,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:28,059 INFO L276 IsEmpty]: Start isEmpty. Operand 11366 states and 15100 transitions. [2023-11-29 01:02:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-11-29 01:02:28,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:02:28,065 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:28,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:02:28,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:02:28,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:28,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1203191045, now seen corresponding path program 1 times [2023-11-29 01:02:28,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:28,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399422620] [2023-11-29 01:02:28,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:28,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 01:02:28,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:28,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399422620] [2023-11-29 01:02:28,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399422620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:02:28,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:02:28,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:02:28,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881773155] [2023-11-29 01:02:28,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:02:28,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:02:28,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:28,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:02:28,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:02:28,811 INFO L87 Difference]: Start difference. First operand 11366 states and 15100 transitions. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:35,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:02:35,509 INFO L93 Difference]: Finished difference Result 20032 states and 27482 transitions. [2023-11-29 01:02:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:02:35,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 356 [2023-11-29 01:02:35,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:02:35,541 INFO L225 Difference]: With dead ends: 20032 [2023-11-29 01:02:35,541 INFO L226 Difference]: Without dead ends: 11366 [2023-11-29 01:02:35,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:02:35,550 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 1151 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 5716 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 5724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:02:35,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 1951 Invalid, 5724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5716 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-29 01:02:35,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11366 states. [2023-11-29 01:02:35,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11366 to 11366. [2023-11-29 01:02:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11366 states, 11365 states have (on average 1.3274967003959526) internal successors, (15087), 11365 states have internal predecessors, (15087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11366 states to 11366 states and 15087 transitions. [2023-11-29 01:02:35,756 INFO L78 Accepts]: Start accepts. Automaton has 11366 states and 15087 transitions. Word has length 356 [2023-11-29 01:02:35,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:02:35,757 INFO L495 AbstractCegarLoop]: Abstraction has 11366 states and 15087 transitions. [2023-11-29 01:02:35,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 11366 states and 15087 transitions. [2023-11-29 01:02:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2023-11-29 01:02:35,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:02:35,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:35,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:02:35,770 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:02:35,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:35,770 INFO L85 PathProgramCache]: Analyzing trace with hash -255648279, now seen corresponding path program 1 times [2023-11-29 01:02:35,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:35,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535530553] [2023-11-29 01:02:35,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:35,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 01:02:36,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:36,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535530553] [2023-11-29 01:02:36,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535530553] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:02:36,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334560001] [2023-11-29 01:02:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:36,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:36,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:02:36,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:02:36,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:02:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:37,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:02:37,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:02:37,821 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-29 01:02:37,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:02:37,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334560001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:02:37,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:02:37,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-29 01:02:37,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541299092] [2023-11-29 01:02:37,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:02:37,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:02:37,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:37,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:02:37,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:02:37,824 INFO L87 Difference]: Start difference. First operand 11366 states and 15087 transitions. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 2 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:43,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:02:43,967 INFO L93 Difference]: Finished difference Result 24132 states and 33156 transitions. [2023-11-29 01:02:43,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:02:43,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 2 states have internal predecessors, (490), 0 states have call successors, (0), 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 541 [2023-11-29 01:02:43,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:02:43,995 INFO L225 Difference]: With dead ends: 24132 [2023-11-29 01:02:43,995 INFO L226 Difference]: Without dead ends: 15497 [2023-11-29 01:02:44,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:02:44,007 INFO L413 NwaCegarLoop]: 1205 mSDtfsCounter, 1058 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4577 mSolverCounterSat, 809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 5386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 4577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:02:44,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1382 Invalid, 5386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [809 Valid, 4577 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-29 01:02:44,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15497 states. [2023-11-29 01:02:44,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15497 to 15495. [2023-11-29 01:02:44,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15495 states, 15494 states have (on average 1.2934038982832063) internal successors, (20040), 15494 states have internal predecessors, (20040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15495 states to 15495 states and 20040 transitions. [2023-11-29 01:02:44,231 INFO L78 Accepts]: Start accepts. Automaton has 15495 states and 20040 transitions. Word has length 541 [2023-11-29 01:02:44,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:02:44,232 INFO L495 AbstractCegarLoop]: Abstraction has 15495 states and 20040 transitions. [2023-11-29 01:02:44,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 2 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:44,233 INFO L276 IsEmpty]: Start isEmpty. Operand 15495 states and 20040 transitions. [2023-11-29 01:02:44,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-11-29 01:02:44,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:02:44,252 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:44,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:02:44,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 01:02:44,471 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:02:44,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:44,471 INFO L85 PathProgramCache]: Analyzing trace with hash -725837982, now seen corresponding path program 1 times [2023-11-29 01:02:44,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:44,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806331107] [2023-11-29 01:02:44,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:44,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 127 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:45,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:45,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806331107] [2023-11-29 01:02:45,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806331107] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:02:45,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3138808] [2023-11-29 01:02:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:45,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:02:45,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:02:45,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:02:45,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:02:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:45,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:02:45,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:02:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:02:45,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:02:45,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3138808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:02:45,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:02:45,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-29 01:02:45,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233914333] [2023-11-29 01:02:45,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:02:45,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:02:45,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:45,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:02:45,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:02:45,660 INFO L87 Difference]: Start difference. First operand 15495 states and 20040 transitions. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:52,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:02:52,287 INFO L93 Difference]: Finished difference Result 40539 states and 53990 transitions. [2023-11-29 01:02:52,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:02:52,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 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 610 [2023-11-29 01:02:52,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:02:52,336 INFO L225 Difference]: With dead ends: 40539 [2023-11-29 01:02:52,337 INFO L226 Difference]: Without dead ends: 27775 [2023-11-29 01:02:52,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:02:52,345 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 2530 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2530 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 5526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:02:52,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2530 Valid, 812 Invalid, 5526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4054 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-29 01:02:52,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27775 states. [2023-11-29 01:02:52,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27775 to 27771. [2023-11-29 01:02:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27771 states, 27770 states have (on average 1.2915376305365502) internal successors, (35866), 27770 states have internal predecessors, (35866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27771 states to 27771 states and 35866 transitions. [2023-11-29 01:02:52,612 INFO L78 Accepts]: Start accepts. Automaton has 27771 states and 35866 transitions. Word has length 610 [2023-11-29 01:02:52,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:02:52,613 INFO L495 AbstractCegarLoop]: Abstraction has 27771 states and 35866 transitions. [2023-11-29 01:02:52,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:52,613 INFO L276 IsEmpty]: Start isEmpty. Operand 27771 states and 35866 transitions. [2023-11-29 01:02:52,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2023-11-29 01:02:52,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:02:52,620 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:52,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:02:52,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 01:02:52,821 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:02:52,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:52,822 INFO L85 PathProgramCache]: Analyzing trace with hash 763378715, now seen corresponding path program 1 times [2023-11-29 01:02:52,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:52,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788241992] [2023-11-29 01:02:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:52,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:02:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-29 01:02:53,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:02:53,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788241992] [2023-11-29 01:02:53,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788241992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:02:53,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:02:53,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:02:53,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592761368] [2023-11-29 01:02:53,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:02:53,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:02:53,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:02:53,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:02:53,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:02:53,189 INFO L87 Difference]: Start difference. First operand 27771 states and 35866 transitions. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 2 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:59,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:02:59,343 INFO L93 Difference]: Finished difference Result 58284 states and 75895 transitions. [2023-11-29 01:02:59,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:02:59,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 2 states have internal predecessors, (543), 0 states have call successors, (0), 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 615 [2023-11-29 01:02:59,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:02:59,372 INFO L225 Difference]: With dead ends: 58284 [2023-11-29 01:02:59,372 INFO L226 Difference]: Without dead ends: 33244 [2023-11-29 01:02:59,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:02:59,387 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 1383 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 3926 mSolverCounterSat, 1660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 5586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1660 IncrementalHoareTripleChecker+Valid, 3926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:02:59,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 731 Invalid, 5586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1660 Valid, 3926 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-29 01:02:59,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33244 states. [2023-11-29 01:02:59,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33244 to 33234. [2023-11-29 01:02:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33234 states, 33233 states have (on average 1.2287786236572082) internal successors, (40836), 33233 states have internal predecessors, (40836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33234 states to 33234 states and 40836 transitions. [2023-11-29 01:02:59,692 INFO L78 Accepts]: Start accepts. Automaton has 33234 states and 40836 transitions. Word has length 615 [2023-11-29 01:02:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:02:59,693 INFO L495 AbstractCegarLoop]: Abstraction has 33234 states and 40836 transitions. [2023-11-29 01:02:59,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 2 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:02:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 33234 states and 40836 transitions. [2023-11-29 01:02:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-11-29 01:02:59,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:02:59,698 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:02:59,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:02:59,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:02:59,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:02:59,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1077780529, now seen corresponding path program 1 times [2023-11-29 01:02:59,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:02:59,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004189324] [2023-11-29 01:02:59,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:02:59,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:02:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:00,063 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-29 01:03:00,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:03:00,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004189324] [2023-11-29 01:03:00,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004189324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:03:00,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:03:00,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:03:00,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982747162] [2023-11-29 01:03:00,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:03:00,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:03:00,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:03:00,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:03:00,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:03:00,066 INFO L87 Difference]: Start difference. First operand 33234 states and 40836 transitions. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 2 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:07,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:03:07,417 INFO L93 Difference]: Finished difference Result 91259 states and 113480 transitions. [2023-11-29 01:03:07,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:03:07,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 2 states have internal predecessors, (543), 0 states have call successors, (0), 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 632 [2023-11-29 01:03:07,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:03:07,472 INFO L225 Difference]: With dead ends: 91259 [2023-11-29 01:03:07,472 INFO L226 Difference]: Without dead ends: 60756 [2023-11-29 01:03:07,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:03:07,489 INFO L413 NwaCegarLoop]: 1745 mSDtfsCounter, 1350 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 4281 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 5711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:03:07,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 2011 Invalid, 5711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4281 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-29 01:03:07,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60756 states. [2023-11-29 01:03:07,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60756 to 55275. [2023-11-29 01:03:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55275 states, 55274 states have (on average 1.1672033867641205) internal successors, (64516), 55274 states have internal predecessors, (64516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55275 states to 55275 states and 64516 transitions. [2023-11-29 01:03:08,035 INFO L78 Accepts]: Start accepts. Automaton has 55275 states and 64516 transitions. Word has length 632 [2023-11-29 01:03:08,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:03:08,036 INFO L495 AbstractCegarLoop]: Abstraction has 55275 states and 64516 transitions. [2023-11-29 01:03:08,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 2 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:08,036 INFO L276 IsEmpty]: Start isEmpty. Operand 55275 states and 64516 transitions. [2023-11-29 01:03:08,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2023-11-29 01:03:08,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:03:08,042 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:03:08,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:03:08,043 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:03:08,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:03:08,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1622291909, now seen corresponding path program 1 times [2023-11-29 01:03:08,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:03:08,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720418924] [2023-11-29 01:03:08,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:08,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:03:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 105 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:03:09,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:03:09,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720418924] [2023-11-29 01:03:09,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720418924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:03:09,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201964051] [2023-11-29 01:03:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:09,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:09,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:03:09,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:03:09,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:03:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:10,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:03:10,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:03:10,315 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-29 01:03:10,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:03:10,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201964051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:03:10,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:03:10,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 01:03:10,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431895611] [2023-11-29 01:03:10,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:03:10,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:03:10,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:03:10,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:03:10,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:03:10,318 INFO L87 Difference]: Start difference. First operand 55275 states and 64516 transitions. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:16,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:03:16,552 INFO L93 Difference]: Finished difference Result 110552 states and 129118 transitions. [2023-11-29 01:03:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:03:16,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 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 748 [2023-11-29 01:03:16,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:03:16,606 INFO L225 Difference]: With dead ends: 110552 [2023-11-29 01:03:16,606 INFO L226 Difference]: Without dead ends: 58008 [2023-11-29 01:03:16,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 747 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:03:16,634 INFO L413 NwaCegarLoop]: 2901 mSDtfsCounter, 1551 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 3679 mSolverCounterSat, 1466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 5145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1466 IncrementalHoareTripleChecker+Valid, 3679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:03:16,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 3082 Invalid, 5145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1466 Valid, 3679 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-29 01:03:16,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58008 states. [2023-11-29 01:03:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58008 to 58002. [2023-11-29 01:03:17,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58002 states, 58001 states have (on average 1.1169117773831485) internal successors, (64782), 58001 states have internal predecessors, (64782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58002 states to 58002 states and 64782 transitions. [2023-11-29 01:03:17,265 INFO L78 Accepts]: Start accepts. Automaton has 58002 states and 64782 transitions. Word has length 748 [2023-11-29 01:03:17,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:03:17,265 INFO L495 AbstractCegarLoop]: Abstraction has 58002 states and 64782 transitions. [2023-11-29 01:03:17,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:17,266 INFO L276 IsEmpty]: Start isEmpty. Operand 58002 states and 64782 transitions. [2023-11-29 01:03:17,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2023-11-29 01:03:17,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:03:17,273 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:03:17,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:03:17,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:03:17,474 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:03:17,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:03:17,476 INFO L85 PathProgramCache]: Analyzing trace with hash -638230759, now seen corresponding path program 1 times [2023-11-29 01:03:17,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:03:17,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604977943] [2023-11-29 01:03:17,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:17,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:03:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 105 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:03:19,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:03:19,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604977943] [2023-11-29 01:03:19,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604977943] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:03:19,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982728940] [2023-11-29 01:03:19,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:19,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:19,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:03:19,540 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:03:19,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:03:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:19,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:03:19,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:03:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-11-29 01:03:19,939 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:03:19,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982728940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:03:19,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:03:19,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-11-29 01:03:19,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060106324] [2023-11-29 01:03:19,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:03:19,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:03:19,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:03:19,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:03:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:03:19,942 INFO L87 Difference]: Start difference. First operand 58002 states and 64782 transitions. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:28,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:03:28,299 INFO L93 Difference]: Finished difference Result 155696 states and 175052 transitions. [2023-11-29 01:03:28,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:03:28,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 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 760 [2023-11-29 01:03:28,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:03:28,394 INFO L225 Difference]: With dead ends: 155696 [2023-11-29 01:03:28,394 INFO L226 Difference]: Without dead ends: 100425 [2023-11-29 01:03:28,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:03:28,424 INFO L413 NwaCegarLoop]: 3187 mSDtfsCounter, 1424 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 5086 mSolverCounterSat, 984 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 3358 SdHoareTripleChecker+Invalid, 6070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 984 IncrementalHoareTripleChecker+Valid, 5086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:03:28,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 3358 Invalid, 6070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [984 Valid, 5086 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-29 01:03:28,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100425 states. [2023-11-29 01:03:29,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100425 to 97614. [2023-11-29 01:03:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97614 states, 97613 states have (on average 1.09375800354461) internal successors, (106765), 97613 states have internal predecessors, (106765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:29,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97614 states to 97614 states and 106765 transitions. [2023-11-29 01:03:29,324 INFO L78 Accepts]: Start accepts. Automaton has 97614 states and 106765 transitions. Word has length 760 [2023-11-29 01:03:29,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:03:29,324 INFO L495 AbstractCegarLoop]: Abstraction has 97614 states and 106765 transitions. [2023-11-29 01:03:29,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:29,325 INFO L276 IsEmpty]: Start isEmpty. Operand 97614 states and 106765 transitions. [2023-11-29 01:03:29,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2023-11-29 01:03:29,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:03:29,332 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:03:29,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 01:03:29,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:03:29,533 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:03:29,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:03:29,533 INFO L85 PathProgramCache]: Analyzing trace with hash 737150201, now seen corresponding path program 1 times [2023-11-29 01:03:29,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:03:29,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225238921] [2023-11-29 01:03:29,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:29,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:03:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-11-29 01:03:30,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:03:30,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225238921] [2023-11-29 01:03:30,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225238921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:03:30,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:03:30,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:03:30,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148389313] [2023-11-29 01:03:30,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:03:30,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:03:30,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:03:30,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:03:30,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:03:30,418 INFO L87 Difference]: Start difference. First operand 97614 states and 106765 transitions. Second operand has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:41,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 01:03:44,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:03:44,609 INFO L93 Difference]: Finished difference Result 299169 states and 331089 transitions. [2023-11-29 01:03:44,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:03:44,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 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 838 [2023-11-29 01:03:44,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:03:44,818 INFO L225 Difference]: With dead ends: 299169 [2023-11-29 01:03:44,818 INFO L226 Difference]: Without dead ends: 204286 [2023-11-29 01:03:44,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:03:44,856 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 3307 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 8858 mSolverCounterSat, 2914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3307 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 11772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2914 IncrementalHoareTripleChecker+Valid, 8858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:03:44,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3307 Valid, 1236 Invalid, 11772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2914 Valid, 8858 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2023-11-29 01:03:45,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204286 states. [2023-11-29 01:03:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204286 to 194609. [2023-11-29 01:03:46,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194609 states, 194608 states have (on average 1.0927043081476608) internal successors, (212649), 194608 states have internal predecessors, (212649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194609 states to 194609 states and 212649 transitions. [2023-11-29 01:03:47,202 INFO L78 Accepts]: Start accepts. Automaton has 194609 states and 212649 transitions. Word has length 838 [2023-11-29 01:03:47,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:03:47,203 INFO L495 AbstractCegarLoop]: Abstraction has 194609 states and 212649 transitions. [2023-11-29 01:03:47,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 194609 states and 212649 transitions. [2023-11-29 01:03:47,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2023-11-29 01:03:47,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:03:47,216 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:03:47,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:03:47,216 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:03:47,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:03:47,217 INFO L85 PathProgramCache]: Analyzing trace with hash -461985157, now seen corresponding path program 1 times [2023-11-29 01:03:47,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:03:47,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204209016] [2023-11-29 01:03:47,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:47,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:03:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 159 proven. 418 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-29 01:03:48,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:03:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204209016] [2023-11-29 01:03:48,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204209016] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:03:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257232851] [2023-11-29 01:03:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:48,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:48,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:03:48,974 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:03:48,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:03:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:03:49,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:03:49,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:03:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-11-29 01:03:49,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:03:49,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257232851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:03:49,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:03:49,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-29 01:03:49,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868745187] [2023-11-29 01:03:49,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:03:49,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:03:49,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:03:49,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:03:49,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:03:49,334 INFO L87 Difference]: Start difference. First operand 194609 states and 212649 transitions. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:55,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:03:55,899 INFO L93 Difference]: Finished difference Result 427448 states and 469733 transitions. [2023-11-29 01:03:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:03:55,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 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 914 [2023-11-29 01:03:55,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:03:56,164 INFO L225 Difference]: With dead ends: 427448 [2023-11-29 01:03:56,164 INFO L226 Difference]: Without dead ends: 232840 [2023-11-29 01:03:56,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 914 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:03:56,432 INFO L413 NwaCegarLoop]: 2683 mSDtfsCounter, 1622 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 3725 mSolverCounterSat, 1583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 5308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1583 IncrementalHoareTripleChecker+Valid, 3725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:03:56,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 2823 Invalid, 5308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1583 Valid, 3725 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-29 01:03:56,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232840 states. [2023-11-29 01:03:58,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232840 to 224629. [2023-11-29 01:03:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224629 states, 224628 states have (on average 1.085323290061791) internal successors, (243794), 224628 states have internal predecessors, (243794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224629 states to 224629 states and 243794 transitions. [2023-11-29 01:03:59,090 INFO L78 Accepts]: Start accepts. Automaton has 224629 states and 243794 transitions. Word has length 914 [2023-11-29 01:03:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:03:59,091 INFO L495 AbstractCegarLoop]: Abstraction has 224629 states and 243794 transitions. [2023-11-29 01:03:59,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:03:59,091 INFO L276 IsEmpty]: Start isEmpty. Operand 224629 states and 243794 transitions. [2023-11-29 01:03:59,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2023-11-29 01:03:59,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:03:59,111 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:03:59,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:03:59,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f03ec619-873c-4654-b90c-281f02bf5a67/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:03:59,312 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:03:59,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:03:59,313 INFO L85 PathProgramCache]: Analyzing trace with hash -502659907, now seen corresponding path program 1 times [2023-11-29 01:03:59,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:03:59,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780672295] [2023-11-29 01:03:59,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:03:59,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:03:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2023-11-29 01:04:02,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:02,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780672295] [2023-11-29 01:04:02,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780672295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:02,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:02,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:04:02,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069143366] [2023-11-29 01:04:02,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:02,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:04:02,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:02,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:04:02,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:02,217 INFO L87 Difference]: Start difference. First operand 224629 states and 243794 transitions. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:09,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:09,578 INFO L93 Difference]: Finished difference Result 439751 states and 477657 transitions. [2023-11-29 01:04:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:04:09,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 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 914 [2023-11-29 01:04:09,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:09,793 INFO L225 Difference]: With dead ends: 439751 [2023-11-29 01:04:09,794 INFO L226 Difference]: Without dead ends: 217853 [2023-11-29 01:04:09,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:09,858 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1690 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 4216 mSolverCounterSat, 1635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 5851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1635 IncrementalHoareTripleChecker+Valid, 4216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:09,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1690 Valid, 520 Invalid, 5851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1635 Valid, 4216 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-29 01:04:10,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217853 states. [2023-11-29 01:04:12,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217853 to 215052. [2023-11-29 01:04:12,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215052 states, 215051 states have (on average 1.083947528725744) internal successors, (233104), 215051 states have internal predecessors, (233104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:12,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215052 states to 215052 states and 233104 transitions. [2023-11-29 01:04:12,648 INFO L78 Accepts]: Start accepts. Automaton has 215052 states and 233104 transitions. Word has length 914 [2023-11-29 01:04:12,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:12,648 INFO L495 AbstractCegarLoop]: Abstraction has 215052 states and 233104 transitions. [2023-11-29 01:04:12,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:12,649 INFO L276 IsEmpty]: Start isEmpty. Operand 215052 states and 233104 transitions. [2023-11-29 01:04:12,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 940 [2023-11-29 01:04:12,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:12,657 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-29 01:04:12,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:04:12,657 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:12,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:12,658 INFO L85 PathProgramCache]: Analyzing trace with hash 2000125469, now seen corresponding path program 1 times [2023-11-29 01:04:12,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:12,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425627162] [2023-11-29 01:04:12,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:12,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:13,416 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-11-29 01:04:13,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:13,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425627162] [2023-11-29 01:04:13,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425627162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:13,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:13,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:04:13,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207108011] [2023-11-29 01:04:13,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:13,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:04:13,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:13,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:04:13,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:13,419 INFO L87 Difference]: Start difference. First operand 215052 states and 233104 transitions. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:20,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:20,349 INFO L93 Difference]: Finished difference Result 423276 states and 459164 transitions. [2023-11-29 01:04:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:04:20,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 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 939 [2023-11-29 01:04:20,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:20,581 INFO L225 Difference]: With dead ends: 423276 [2023-11-29 01:04:20,581 INFO L226 Difference]: Without dead ends: 210955 [2023-11-29 01:04:20,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:20,645 INFO L413 NwaCegarLoop]: 2847 mSDtfsCounter, 1352 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 4404 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 4800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 4404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:20,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 3037 Invalid, 4800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 4404 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-29 01:04:20,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210955 states. [2023-11-29 01:04:22,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210955 to 197297. [2023-11-29 01:04:22,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197297 states, 197296 states have (on average 1.07455802449112) internal successors, (212006), 197296 states have internal predecessors, (212006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197297 states to 197297 states and 212006 transitions. [2023-11-29 01:04:22,924 INFO L78 Accepts]: Start accepts. Automaton has 197297 states and 212006 transitions. Word has length 939 [2023-11-29 01:04:22,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:22,925 INFO L495 AbstractCegarLoop]: Abstraction has 197297 states and 212006 transitions. [2023-11-29 01:04:22,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:22,925 INFO L276 IsEmpty]: Start isEmpty. Operand 197297 states and 212006 transitions. [2023-11-29 01:04:22,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2023-11-29 01:04:22,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:22,936 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:22,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:04:22,936 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:22,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:22,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1602453500, now seen corresponding path program 1 times [2023-11-29 01:04:22,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:22,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655586456] [2023-11-29 01:04:22,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:22,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-11-29 01:04:24,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:24,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655586456] [2023-11-29 01:04:24,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655586456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:24,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:24,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:04:24,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761283949] [2023-11-29 01:04:24,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:24,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:04:24,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:24,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:04:24,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:24,263 INFO L87 Difference]: Start difference. First operand 197297 states and 212006 transitions. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:32,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:32,766 INFO L93 Difference]: Finished difference Result 462909 states and 500236 transitions. [2023-11-29 01:04:32,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:04:32,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 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 948 [2023-11-29 01:04:32,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:33,062 INFO L225 Difference]: With dead ends: 462909 [2023-11-29 01:04:33,063 INFO L226 Difference]: Without dead ends: 268343 [2023-11-29 01:04:33,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:33,144 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 1695 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 4161 mSolverCounterSat, 2330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 6491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2330 IncrementalHoareTripleChecker+Valid, 4161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:33,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 570 Invalid, 6491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2330 Valid, 4161 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-11-29 01:04:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268343 states. [2023-11-29 01:04:35,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268343 to 253244. [2023-11-29 01:04:35,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253244 states, 253243 states have (on average 1.0853093668926683) internal successors, (274847), 253243 states have internal predecessors, (274847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253244 states to 253244 states and 274847 transitions. [2023-11-29 01:04:36,296 INFO L78 Accepts]: Start accepts. Automaton has 253244 states and 274847 transitions. Word has length 948 [2023-11-29 01:04:36,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:36,296 INFO L495 AbstractCegarLoop]: Abstraction has 253244 states and 274847 transitions. [2023-11-29 01:04:36,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:36,297 INFO L276 IsEmpty]: Start isEmpty. Operand 253244 states and 274847 transitions. [2023-11-29 01:04:36,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1040 [2023-11-29 01:04:36,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:36,309 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:36,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 01:04:36,309 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:36,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:36,310 INFO L85 PathProgramCache]: Analyzing trace with hash -876518948, now seen corresponding path program 1 times [2023-11-29 01:04:36,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:36,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210441021] [2023-11-29 01:04:36,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:36,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 483 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-11-29 01:04:38,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:38,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210441021] [2023-11-29 01:04:38,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210441021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:38,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:38,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:04:38,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36026567] [2023-11-29 01:04:38,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:38,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:04:38,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:38,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:04:38,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:38,248 INFO L87 Difference]: Start difference. First operand 253244 states and 274847 transitions. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:45,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:45,443 INFO L93 Difference]: Finished difference Result 514682 states and 558125 transitions. [2023-11-29 01:04:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:04:45,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 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 1039 [2023-11-29 01:04:45,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:45,742 INFO L225 Difference]: With dead ends: 514682 [2023-11-29 01:04:45,742 INFO L226 Difference]: Without dead ends: 261438 [2023-11-29 01:04:45,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:45,834 INFO L413 NwaCegarLoop]: 2095 mSDtfsCounter, 1761 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3892 mSolverCounterSat, 1387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 5279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1387 IncrementalHoareTripleChecker+Valid, 3892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:45,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 2145 Invalid, 5279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1387 Valid, 3892 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-29 01:04:46,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261438 states. [2023-11-29 01:04:48,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261438 to 245053. [2023-11-29 01:04:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245053 states, 245052 states have (on average 1.072135709971761) internal successors, (262729), 245052 states have internal predecessors, (262729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:48,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245053 states to 245053 states and 262729 transitions. [2023-11-29 01:04:48,784 INFO L78 Accepts]: Start accepts. Automaton has 245053 states and 262729 transitions. Word has length 1039 [2023-11-29 01:04:48,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:48,785 INFO L495 AbstractCegarLoop]: Abstraction has 245053 states and 262729 transitions. [2023-11-29 01:04:48,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:48,785 INFO L276 IsEmpty]: Start isEmpty. Operand 245053 states and 262729 transitions. [2023-11-29 01:04:48,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1122 [2023-11-29 01:04:48,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:48,812 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:48,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:04:48,812 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:48,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:48,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1358441821, now seen corresponding path program 1 times [2023-11-29 01:04:48,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:48,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451686887] [2023-11-29 01:04:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:48,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 790 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2023-11-29 01:04:49,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:49,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451686887] [2023-11-29 01:04:49,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451686887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:49,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:49,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:04:49,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835117467] [2023-11-29 01:04:49,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:49,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:04:49,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:49,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:04:49,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:49,655 INFO L87 Difference]: Start difference. First operand 245053 states and 262729 transitions. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:56,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:56,225 INFO L93 Difference]: Finished difference Result 487381 states and 522732 transitions. [2023-11-29 01:04:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:04:56,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 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 1121 [2023-11-29 01:04:56,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:56,463 INFO L225 Difference]: With dead ends: 487381 [2023-11-29 01:04:56,463 INFO L226 Difference]: Without dead ends: 245059 [2023-11-29 01:04:56,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:56,520 INFO L413 NwaCegarLoop]: 2838 mSDtfsCounter, 1262 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 4392 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 4485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 4392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:56,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 3027 Invalid, 4485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 4392 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-29 01:04:56,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245059 states. [2023-11-29 01:04:58,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245059 to 245051. [2023-11-29 01:04:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245051 states, 245050 states have (on average 1.0721281371148745) internal successors, (262725), 245050 states have internal predecessors, (262725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245051 states to 245051 states and 262725 transitions. [2023-11-29 01:04:59,495 INFO L78 Accepts]: Start accepts. Automaton has 245051 states and 262725 transitions. Word has length 1121 [2023-11-29 01:04:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:59,496 INFO L495 AbstractCegarLoop]: Abstraction has 245051 states and 262725 transitions. [2023-11-29 01:04:59,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:04:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 245051 states and 262725 transitions. [2023-11-29 01:04:59,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2023-11-29 01:04:59,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:59,512 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:59,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 01:04:59,512 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:59,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:59,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2111766440, now seen corresponding path program 1 times [2023-11-29 01:04:59,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:59,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305360846] [2023-11-29 01:04:59,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:59,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1436 backedges. 975 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2023-11-29 01:05:00,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:00,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305360846] [2023-11-29 01:05:00,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305360846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:00,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:00,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:05:00,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305798016] [2023-11-29 01:05:00,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:00,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:05:00,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:00,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:05:00,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:05:00,952 INFO L87 Difference]: Start difference. First operand 245051 states and 262725 transitions. Second operand has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:09,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:09,197 INFO L93 Difference]: Finished difference Result 550235 states and 591769 transitions. [2023-11-29 01:05:09,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:05:09,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 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 1128 [2023-11-29 01:05:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:09,739 INFO L225 Difference]: With dead ends: 550235 [2023-11-29 01:05:09,739 INFO L226 Difference]: Without dead ends: 307915 [2023-11-29 01:05:09,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:05:09,788 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 1486 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4181 mSolverCounterSat, 2052 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 6233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2052 IncrementalHoareTripleChecker+Valid, 4181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:09,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 833 Invalid, 6233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2052 Valid, 4181 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-29 01:05:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307915 states. [2023-11-29 01:05:12,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307915 to 290085. [2023-11-29 01:05:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290085 states, 290084 states have (on average 1.076691578990913) internal successors, (312331), 290084 states have internal predecessors, (312331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:13,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290085 states to 290085 states and 312331 transitions. [2023-11-29 01:05:13,316 INFO L78 Accepts]: Start accepts. Automaton has 290085 states and 312331 transitions. Word has length 1128 [2023-11-29 01:05:13,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:13,317 INFO L495 AbstractCegarLoop]: Abstraction has 290085 states and 312331 transitions. [2023-11-29 01:05:13,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.33333333333334) internal successors, (763), 3 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:13,317 INFO L276 IsEmpty]: Start isEmpty. Operand 290085 states and 312331 transitions. [2023-11-29 01:05:13,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1214 [2023-11-29 01:05:13,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:13,338 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:13,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 01:05:13,338 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:13,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:13,339 INFO L85 PathProgramCache]: Analyzing trace with hash -753004659, now seen corresponding path program 1 times [2023-11-29 01:05:13,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:13,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117060543] [2023-11-29 01:05:13,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:13,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 1315 trivial. 0 not checked. [2023-11-29 01:05:14,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:14,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117060543] [2023-11-29 01:05:14,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117060543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:14,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:14,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:05:14,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462055042] [2023-11-29 01:05:14,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:14,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:05:14,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:14,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:05:14,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:05:14,198 INFO L87 Difference]: Start difference. First operand 290085 states and 312331 transitions. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:23,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:23,085 INFO L93 Difference]: Finished difference Result 645724 states and 696992 transitions. [2023-11-29 01:05:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:05:23,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 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 1213 [2023-11-29 01:05:23,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:23,449 INFO L225 Difference]: With dead ends: 645724 [2023-11-29 01:05:23,449 INFO L226 Difference]: Without dead ends: 358370 [2023-11-29 01:05:23,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:05:23,538 INFO L413 NwaCegarLoop]: 1251 mSDtfsCounter, 1577 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 4137 mSolverCounterSat, 1467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 5604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1467 IncrementalHoareTripleChecker+Valid, 4137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:23,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 1395 Invalid, 5604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1467 Valid, 4137 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-29 01:05:23,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358370 states. [2023-11-29 01:05:26,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358370 to 346052. [2023-11-29 01:05:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346052 states, 346051 states have (on average 1.0765638590843547) internal successors, (372546), 346051 states have internal predecessors, (372546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346052 states to 346052 states and 372546 transitions. [2023-11-29 01:05:27,534 INFO L78 Accepts]: Start accepts. Automaton has 346052 states and 372546 transitions. Word has length 1213 [2023-11-29 01:05:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:27,535 INFO L495 AbstractCegarLoop]: Abstraction has 346052 states and 372546 transitions. [2023-11-29 01:05:27,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:27,536 INFO L276 IsEmpty]: Start isEmpty. Operand 346052 states and 372546 transitions. [2023-11-29 01:05:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1287 [2023-11-29 01:05:27,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:27,554 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:27,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 01:05:27,555 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:27,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:27,555 INFO L85 PathProgramCache]: Analyzing trace with hash -948820609, now seen corresponding path program 1 times [2023-11-29 01:05:27,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:27,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659351532] [2023-11-29 01:05:27,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:27,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 928 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-11-29 01:05:28,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:28,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659351532] [2023-11-29 01:05:28,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659351532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:28,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:28,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:05:28,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796787315] [2023-11-29 01:05:28,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:28,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:05:28,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:28,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:05:28,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:05:28,924 INFO L87 Difference]: Start difference. First operand 346052 states and 372546 transitions. Second operand has 4 states, 4 states have (on average 220.5) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:41,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:41,534 INFO L93 Difference]: Finished difference Result 871310 states and 937477 transitions. [2023-11-29 01:05:41,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:05:41,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 220.5) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 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 1286 [2023-11-29 01:05:41,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:42,110 INFO L225 Difference]: With dead ends: 871310 [2023-11-29 01:05:42,110 INFO L226 Difference]: Without dead ends: 527834 [2023-11-29 01:05:42,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:05:42,225 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 1632 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 8001 mSolverCounterSat, 628 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 8629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 8001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:42,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 1101 Invalid, 8629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 8001 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-11-29 01:05:42,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527834 states. [2023-11-29 01:05:47,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527834 to 527831. [2023-11-29 01:05:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527831 states, 527830 states have (on average 1.0637440084875813) internal successors, (561476), 527830 states have internal predecessors, (561476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:48,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527831 states to 527831 states and 561476 transitions. [2023-11-29 01:05:48,851 INFO L78 Accepts]: Start accepts. Automaton has 527831 states and 561476 transitions. Word has length 1286 [2023-11-29 01:05:48,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:48,851 INFO L495 AbstractCegarLoop]: Abstraction has 527831 states and 561476 transitions. [2023-11-29 01:05:48,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.5) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:48,852 INFO L276 IsEmpty]: Start isEmpty. Operand 527831 states and 561476 transitions. [2023-11-29 01:05:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1307 [2023-11-29 01:05:48,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:48,869 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:48,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 01:05:48,870 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:48,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:48,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1054952671, now seen corresponding path program 1 times [2023-11-29 01:05:48,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:48,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869763388] [2023-11-29 01:05:48,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:48,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:49,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1468 backedges. 975 proven. 0 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2023-11-29 01:05:49,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:49,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869763388] [2023-11-29 01:05:49,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869763388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:49,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:49,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:05:49,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395761402] [2023-11-29 01:05:49,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:49,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:05:49,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:49,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:05:49,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:05:49,833 INFO L87 Difference]: Start difference. First operand 527831 states and 561476 transitions. Second operand has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:05:59,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:59,274 INFO L93 Difference]: Finished difference Result 1118480 states and 1189930 transitions. [2023-11-29 01:05:59,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:05:59,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 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 1306 [2023-11-29 01:05:59,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:59,979 INFO L225 Difference]: With dead ends: 1118480 [2023-11-29 01:05:59,979 INFO L226 Difference]: Without dead ends: 593380 [2023-11-29 01:06:00,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:06:00,165 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1119 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4041 mSolverCounterSat, 1076 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 5117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1076 IncrementalHoareTripleChecker+Valid, 4041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:00,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 1790 Invalid, 5117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1076 Valid, 4041 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-29 01:06:00,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593380 states. [2023-11-29 01:06:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593380 to 503160. [2023-11-29 01:06:06,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503160 states, 503159 states have (on average 1.0646157576432103) internal successors, (535671), 503159 states have internal predecessors, (535671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:07,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503160 states to 503160 states and 535671 transitions. [2023-11-29 01:06:07,460 INFO L78 Accepts]: Start accepts. Automaton has 503160 states and 535671 transitions. Word has length 1306 [2023-11-29 01:06:07,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:07,461 INFO L495 AbstractCegarLoop]: Abstraction has 503160 states and 535671 transitions. [2023-11-29 01:06:07,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.6666666666667) internal successors, (908), 3 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:07,462 INFO L276 IsEmpty]: Start isEmpty. Operand 503160 states and 535671 transitions. [2023-11-29 01:06:07,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1413 [2023-11-29 01:06:07,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:07,490 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:06:07,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 01:06:07,490 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:07,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:07,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1817895560, now seen corresponding path program 1 times [2023-11-29 01:06:07,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:07,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629868591] [2023-11-29 01:06:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:07,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1780 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 1567 trivial. 0 not checked. [2023-11-29 01:06:08,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:08,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629868591] [2023-11-29 01:06:08,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629868591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:08,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:08,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:06:08,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27455574] [2023-11-29 01:06:08,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:08,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:06:08,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:08,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:06:08,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:06:08,555 INFO L87 Difference]: Start difference. First operand 503160 states and 535671 transitions. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:06:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:19,466 INFO L93 Difference]: Finished difference Result 1178288 states and 1258559 transitions. [2023-11-29 01:06:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:06:19,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 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 1412 [2023-11-29 01:06:19,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:20,197 INFO L225 Difference]: With dead ends: 1178288 [2023-11-29 01:06:20,198 INFO L226 Difference]: Without dead ends: 677859 [2023-11-29 01:06:20,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:06:20,319 INFO L413 NwaCegarLoop]: 2651 mSDtfsCounter, 1476 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 5059 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 5947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 5059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:20,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 2823 Invalid, 5947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [888 Valid, 5059 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-11-29 01:06:20,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677859 states.