./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp.6.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp.6.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ff1105f9725b0cacfcbf052ce6713d117a643a360cb809086aa9dcf200d1c6f1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:20:34,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:20:34,147 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:20:34,156 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:20:34,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:20:34,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:20:34,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:20:34,197 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:20:34,198 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:20:34,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:20:34,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:20:34,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:20:34,205 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:20:34,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:20:34,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:20:34,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:20:34,208 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:20:34,209 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:20:34,209 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:20:34,210 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:20:34,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:20:34,211 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:20:34,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:20:34,212 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:20:34,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:20:34,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:20:34,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:20:34,214 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:20:34,214 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:20:34,214 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:20:34,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:20:34,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:20:34,216 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:20:34,216 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:20:34,217 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:20:34,217 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:20:34,217 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_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff1105f9725b0cacfcbf052ce6713d117a643a360cb809086aa9dcf200d1c6f1 [2023-11-12 02:20:34,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:20:34,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:20:34,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:20:34,549 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:20:34,550 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:20:34,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp.6.prop1-back-serstep.c [2023-11-12 02:20:37,754 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:20:38,245 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:20:38,245 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp.6.prop1-back-serstep.c [2023-11-12 02:20:38,272 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl/data/75c6a5c6b/228f305d22cc4b74944841f0b7ae0631/FLAGe589d1247 [2023-11-12 02:20:38,287 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl/data/75c6a5c6b/228f305d22cc4b74944841f0b7ae0631 [2023-11-12 02:20:38,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:20:38,295 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:20:38,299 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:20:38,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:20:38,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:20:38,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:20:38" (1/1) ... [2023-11-12 02:20:38,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228a11f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:38, skipping insertion in model container [2023-11-12 02:20:38,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:20:38" (1/1) ... [2023-11-12 02:20:38,437 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:20:38,695 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_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp.6.prop1-back-serstep.c[1171,1184] [2023-11-12 02:20:39,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:20:39,368 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:20:39,381 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_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp.6.prop1-back-serstep.c[1171,1184] [2023-11-12 02:20:39,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:20:39,729 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:20:39,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:39 WrapperNode [2023-11-12 02:20:39,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:20:39,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:20:39,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:20:39,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:20:39,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:39" (1/1) ... [2023-11-12 02:20:39,999 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:39" (1/1) ... [2023-11-12 02:20:41,779 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 13579 [2023-11-12 02:20:41,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:20:41,780 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:20:41,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:20:41,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:20:41,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:39" (1/1) ... [2023-11-12 02:20:41,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:39" (1/1) ... [2023-11-12 02:20:42,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:39" (1/1) ... [2023-11-12 02:20:42,295 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:39" (1/1) ... [2023-11-12 02:20:43,070 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:39" (1/1) ... [2023-11-12 02:20:43,238 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:39" (1/1) ... [2023-11-12 02:20:43,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:39" (1/1) ... [2023-11-12 02:20:43,429 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:39" (1/1) ... [2023-11-12 02:20:43,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:20:43,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:20:43,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:20:43,926 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:20:43,928 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:39" (1/1) ... [2023-11-12 02:20:43,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:20:43,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:43,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:20:43,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e227c90-797b-4d7a-8a8a-a73a16ad74dd/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:20:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:20:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:20:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:20:44,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:20:44,809 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:20:44,813 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:20:54,316 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:20:54,353 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:20:54,354 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:20:54,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:54 BoogieIcfgContainer [2023-11-12 02:20:54,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:20:54,364 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:20:54,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:20:54,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:20:54,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:20:38" (1/3) ... [2023-11-12 02:20:54,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507c1e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:20:54, skipping insertion in model container [2023-11-12 02:20:54,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:20:39" (2/3) ... [2023-11-12 02:20:54,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507c1e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:20:54, skipping insertion in model container [2023-11-12 02:20:54,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:20:54" (3/3) ... [2023-11-12 02:20:54,375 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.brp.6.prop1-back-serstep.c [2023-11-12 02:20:54,396 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:20:54,396 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:20:54,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:20:54,536 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;@6823726b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:20:54,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:20:54,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 3050 states, 3048 states have (on average 1.666010498687664) internal successors, (5078), 3049 states have internal predecessors, (5078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:54,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2023-11-12 02:20:54,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:54,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:54,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:54,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:54,608 INFO L85 PathProgramCache]: Analyzing trace with hash 223967200, now seen corresponding path program 1 times [2023-11-12 02:20:54,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:54,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342333657] [2023-11-12 02:20:54,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:54,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:57,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:57,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342333657] [2023-11-12 02:20:57,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342333657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:57,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:57,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:20:57,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458709875] [2023-11-12 02:20:57,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:57,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:20:57,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:57,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:20:57,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:20:57,610 INFO L87 Difference]: Start difference. First operand has 3050 states, 3048 states have (on average 1.666010498687664) internal successors, (5078), 3049 states have internal predecessors, (5078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:21:03,340 INFO L93 Difference]: Finished difference Result 8904 states and 14834 transitions. [2023-11-12 02:21:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:21:03,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 375 [2023-11-12 02:21:03,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:21:03,395 INFO L225 Difference]: With dead ends: 8904 [2023-11-12 02:21:03,395 INFO L226 Difference]: Without dead ends: 5973 [2023-11-12 02:21:03,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:21:03,410 INFO L413 NwaCegarLoop]: 3789 mSDtfsCounter, 14562 mSDsluCounter, 7570 mSDsCounter, 0 mSdLazyCounter, 3857 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14562 SdHoareTripleChecker+Valid, 11359 SdHoareTripleChecker+Invalid, 3858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:21:03,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14562 Valid, 11359 Invalid, 3858 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3857 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-12 02:21:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5973 states. [2023-11-12 02:21:03,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5973 to 3316. [2023-11-12 02:21:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3316 states, 3315 states have (on average 1.665158371040724) internal successors, (5520), 3315 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 5520 transitions. [2023-11-12 02:21:03,611 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 5520 transitions. Word has length 375 [2023-11-12 02:21:03,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:21:03,613 INFO L495 AbstractCegarLoop]: Abstraction has 3316 states and 5520 transitions. [2023-11-12 02:21:03,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:03,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 5520 transitions. [2023-11-12 02:21:03,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-11-12 02:21:03,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:21:03,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:03,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:21:03,622 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:21:03,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1340915218, now seen corresponding path program 1 times [2023-11-12 02:21:03,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:03,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852074806] [2023-11-12 02:21:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:03,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:21:04,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:04,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852074806] [2023-11-12 02:21:04,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852074806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:04,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:04,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:21:04,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920624886] [2023-11-12 02:21:04,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:04,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:21:04,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:04,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:21:04,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:21:04,750 INFO L87 Difference]: Start difference. First operand 3316 states and 5520 transitions. Second operand has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:08,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:21:08,625 INFO L93 Difference]: Finished difference Result 9054 states and 15050 transitions. [2023-11-12 02:21:08,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:21:08,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 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 376 [2023-11-12 02:21:08,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:21:08,659 INFO L225 Difference]: With dead ends: 9054 [2023-11-12 02:21:08,660 INFO L226 Difference]: Without dead ends: 6127 [2023-11-12 02:21:08,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:21:08,672 INFO L413 NwaCegarLoop]: 4132 mSDtfsCounter, 19284 mSDsluCounter, 9065 mSDsCounter, 0 mSdLazyCounter, 2695 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19284 SdHoareTripleChecker+Valid, 13197 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:21:08,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19284 Valid, 13197 Invalid, 2772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2695 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-12 02:21:08,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6127 states. [2023-11-12 02:21:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6127 to 3321. [2023-11-12 02:21:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3320 states have (on average 1.6647590361445783) internal successors, (5527), 3320 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 5527 transitions. [2023-11-12 02:21:08,789 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 5527 transitions. Word has length 376 [2023-11-12 02:21:08,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:21:08,791 INFO L495 AbstractCegarLoop]: Abstraction has 3321 states and 5527 transitions. [2023-11-12 02:21:08,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 62.666666666666664) internal successors, (376), 6 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:08,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 5527 transitions. [2023-11-12 02:21:08,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-11-12 02:21:08,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:21:08,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:08,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:21:08,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:21:08,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:08,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1147483926, now seen corresponding path program 1 times [2023-11-12 02:21:08,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:08,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407216554] [2023-11-12 02:21:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:08,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:21:10,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:10,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407216554] [2023-11-12 02:21:10,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407216554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:10,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:10,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:21:10,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741688650] [2023-11-12 02:21:10,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:10,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:21:10,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:10,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:21:10,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:21:10,394 INFO L87 Difference]: Start difference. First operand 3321 states and 5527 transitions. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:15,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:21:15,078 INFO L93 Difference]: Finished difference Result 8900 states and 14819 transitions. [2023-11-12 02:21:15,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:21:15,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2023-11-12 02:21:15,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:21:15,112 INFO L225 Difference]: With dead ends: 8900 [2023-11-12 02:21:15,112 INFO L226 Difference]: Without dead ends: 5973 [2023-11-12 02:21:15,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:21:15,148 INFO L413 NwaCegarLoop]: 3789 mSDtfsCounter, 14552 mSDsluCounter, 7570 mSDsCounter, 0 mSdLazyCounter, 3857 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14552 SdHoareTripleChecker+Valid, 11359 SdHoareTripleChecker+Invalid, 3857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:21:15,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14552 Valid, 11359 Invalid, 3857 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 3857 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-12 02:21:15,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5973 states. [2023-11-12 02:21:15,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5973 to 3322. [2023-11-12 02:21:15,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3322 states, 3321 states have (on average 1.6645588678109002) internal successors, (5528), 3321 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3322 states to 3322 states and 5528 transitions. [2023-11-12 02:21:15,289 INFO L78 Accepts]: Start accepts. Automaton has 3322 states and 5528 transitions. Word has length 377 [2023-11-12 02:21:15,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:21:15,290 INFO L495 AbstractCegarLoop]: Abstraction has 3322 states and 5528 transitions. [2023-11-12 02:21:15,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:21:15,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3322 states and 5528 transitions. [2023-11-12 02:21:15,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-11-12 02:21:15,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:21:15,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:21:15,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:21:15,299 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:21:15,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:15,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1618840276, now seen corresponding path program 1 times [2023-11-12 02:21:15,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:15,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81261903] [2023-11-12 02:21:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:15,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:21:16,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:16,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81261903] [2023-11-12 02:21:16,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81261903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:16,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:16,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:21:16,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603980905] [2023-11-12 02:21:16,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:16,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:21:16,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:16,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:21:16,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:21:16,446 INFO L87 Difference]: Start difference. First operand 3322 states and 5528 transitions. Second operand has 6 states, 6 states have (on average 62.833333333333336) internal successors, (377), 6 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)