./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu --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 4dc4211f2b8131a829ff8e1fa12908da9356d5cadf0e7b793aab2903e0fde547 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:33:51,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:33:52,014 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:33:52,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:33:52,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:33:52,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:33:52,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:33:52,073 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:33:52,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:33:52,079 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:33:52,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:33:52,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:33:52,082 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:33:52,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:33:52,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:33:52,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:33:52,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:33:52,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:33:52,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:33:52,087 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:33:52,087 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:33:52,088 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:33:52,089 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:33:52,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:33:52,092 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:33:52,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:52,093 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:33:52,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:33:52,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:33:52,095 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:33:52,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:33:52,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:33:52,097 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:33:52,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:33:52,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:33:52,098 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:33:52,098 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_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4dc4211f2b8131a829ff8e1fa12908da9356d5cadf0e7b793aab2903e0fde547 [2023-11-19 07:33:52,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:33:52,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:33:52,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:33:52,429 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:33:52,430 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:33:52,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c [2023-11-19 07:33:55,426 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:33:55,929 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:33:55,933 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c [2023-11-19 07:33:55,957 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu/data/6c02a7b34/045f25f1ce6748f99a73074e6888df98/FLAG0177b7742 [2023-11-19 07:33:55,974 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu/data/6c02a7b34/045f25f1ce6748f99a73074e6888df98 [2023-11-19 07:33:55,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:33:55,986 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:33:55,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:55,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:33:55,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:33:55,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:56,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16776a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:56, skipping insertion in model container [2023-11-19 07:33:56,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:55" (1/1) ... [2023-11-19 07:33:56,090 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:56,311 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_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c[1245,1258] [2023-11-19 07:33:56,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:56,735 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:33:56,745 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_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal20.c[1245,1258] [2023-11-19 07:33:57,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:57,049 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:33:57,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57 WrapperNode [2023-11-19 07:33:57,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:57,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:57,052 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:33:57,052 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:33:57,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,129 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,624 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4089 [2023-11-19 07:33:57,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:57,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:33:57,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:33:57,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:33:57,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,712 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,980 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:58,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:58,048 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:58,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:58,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:33:58,198 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:33:58,198 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:33:58,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:33:58,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:58,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:58,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:58,283 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:58,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22539ac-87a5-4ebd-9fe1-7f375b2af6fd/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:33:58,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:33:58,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:33:58,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:33:58,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:33:58,922 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:33:58,924 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:34:02,675 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:34:02,703 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:34:02,703 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:34:02,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:02 BoogieIcfgContainer [2023-11-19 07:34:02,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:34:02,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:34:02,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:34:02,725 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:34:02,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:55" (1/3) ... [2023-11-19 07:34:02,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5527a589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:02, skipping insertion in model container [2023-11-19 07:34:02,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57" (2/3) ... [2023-11-19 07:34:02,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5527a589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:02, skipping insertion in model container [2023-11-19 07:34:02,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:02" (3/3) ... [2023-11-19 07:34:02,732 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal20.c [2023-11-19 07:34:02,755 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:34:02,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:34:02,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:02,858 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;@33a5eab6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:02,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:34:02,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 800 states, 798 states have (on average 1.6654135338345866) internal successors, (1329), 799 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:02,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2023-11-19 07:34:02,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:02,924 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] [2023-11-19 07:34:02,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:02,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:02,934 INFO L85 PathProgramCache]: Analyzing trace with hash -124900206, now seen corresponding path program 1 times [2023-11-19 07:34:02,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:02,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334056402] [2023-11-19 07:34:02,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:02,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:06,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:06,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334056402] [2023-11-19 07:34:06,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334056402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:06,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:06,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:06,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899839282] [2023-11-19 07:34:06,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:06,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:34:06,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:06,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:34:06,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:06,328 INFO L87 Difference]: Start difference. First operand has 800 states, 798 states have (on average 1.6654135338345866) internal successors, (1329), 799 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:06,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:06,475 INFO L93 Difference]: Finished difference Result 1575 states and 2621 transitions. [2023-11-19 07:34:06,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:34:06,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 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 333 [2023-11-19 07:34:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:06,510 INFO L225 Difference]: With dead ends: 1575 [2023-11-19 07:34:06,510 INFO L226 Difference]: Without dead ends: 798 [2023-11-19 07:34:06,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:06,526 INFO L413 NwaCegarLoop]: 1321 mSDtfsCounter, 1 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3957 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:06,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3957 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:06,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2023-11-19 07:34:06,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798. [2023-11-19 07:34:06,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 1.6624843161856964) internal successors, (1325), 797 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1325 transitions. [2023-11-19 07:34:06,642 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1325 transitions. Word has length 333 [2023-11-19 07:34:06,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:06,646 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1325 transitions. [2023-11-19 07:34:06,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1325 transitions. [2023-11-19 07:34:06,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-11-19 07:34:06,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:06,654 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] [2023-11-19 07:34:06,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:34:06,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:06,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:06,656 INFO L85 PathProgramCache]: Analyzing trace with hash 424787841, now seen corresponding path program 1 times [2023-11-19 07:34:06,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:06,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118393538] [2023-11-19 07:34:06,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:06,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:08,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:08,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:08,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118393538] [2023-11-19 07:34:08,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118393538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:08,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:08,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:08,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382743593] [2023-11-19 07:34:08,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:08,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:34:08,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:08,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:34:08,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:08,232 INFO L87 Difference]: Start difference. First operand 798 states and 1325 transitions. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:08,323 INFO L93 Difference]: Finished difference Result 1576 states and 2617 transitions. [2023-11-19 07:34:08,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:34:08,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 334 [2023-11-19 07:34:08,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:08,330 INFO L225 Difference]: With dead ends: 1576 [2023-11-19 07:34:08,330 INFO L226 Difference]: Without dead ends: 801 [2023-11-19 07:34:08,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:08,333 INFO L413 NwaCegarLoop]: 1321 mSDtfsCounter, 1 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:08,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3954 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:08,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2023-11-19 07:34:08,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 800. [2023-11-19 07:34:08,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 1.6608260325406758) internal successors, (1327), 799 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1327 transitions. [2023-11-19 07:34:08,356 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1327 transitions. Word has length 334 [2023-11-19 07:34:08,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:08,357 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1327 transitions. [2023-11-19 07:34:08,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:08,357 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1327 transitions. [2023-11-19 07:34:08,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-11-19 07:34:08,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:08,363 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] [2023-11-19 07:34:08,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:34:08,364 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:08,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:08,365 INFO L85 PathProgramCache]: Analyzing trace with hash 73090700, now seen corresponding path program 1 times [2023-11-19 07:34:08,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:08,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5468943] [2023-11-19 07:34:08,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:08,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:17,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:17,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5468943] [2023-11-19 07:34:17,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5468943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:17,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:17,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:17,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473094125] [2023-11-19 07:34:17,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:17,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:34:17,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:17,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:34:17,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:17,055 INFO L87 Difference]: Start difference. First operand 800 states and 1327 transitions. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:17,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:17,194 INFO L93 Difference]: Finished difference Result 1992 states and 3309 transitions. [2023-11-19 07:34:17,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:34:17,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 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 335 [2023-11-19 07:34:17,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:17,205 INFO L225 Difference]: With dead ends: 1992 [2023-11-19 07:34:17,206 INFO L226 Difference]: Without dead ends: 1215 [2023-11-19 07:34:17,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:17,215 INFO L413 NwaCegarLoop]: 1996 mSDtfsCounter, 2333 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2333 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:17,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2333 Valid, 2858 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:17,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-11-19 07:34:17,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 800. [2023-11-19 07:34:17,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 1.6595744680851063) internal successors, (1326), 799 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:17,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1326 transitions. [2023-11-19 07:34:17,245 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1326 transitions. Word has length 335 [2023-11-19 07:34:17,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:17,246 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1326 transitions. [2023-11-19 07:34:17,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1326 transitions. [2023-11-19 07:34:17,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-11-19 07:34:17,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:17,257 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] [2023-11-19 07:34:17,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:34:17,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:17,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:17,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2124287731, now seen corresponding path program 1 times [2023-11-19 07:34:17,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:17,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123727586] [2023-11-19 07:34:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:17,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:22,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:22,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:22,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123727586] [2023-11-19 07:34:22,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123727586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:22,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:22,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:34:22,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382174945] [2023-11-19 07:34:22,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:22,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:34:22,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:22,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:34:22,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:22,119 INFO L87 Difference]: Start difference. First operand 800 states and 1326 transitions. Second operand has 8 states, 8 states have (on average 42.0) internal successors, (336), 8 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:23,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:23,367 INFO L93 Difference]: Finished difference Result 4156 states and 6878 transitions. [2023-11-19 07:34:23,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:34:23,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 42.0) internal successors, (336), 8 states have internal predecessors, (336), 0 states have call successors, (0), 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 336 [2023-11-19 07:34:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:23,379 INFO L225 Difference]: With dead ends: 4156 [2023-11-19 07:34:23,380 INFO L226 Difference]: Without dead ends: 1741 [2023-11-19 07:34:23,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:34:23,395 INFO L413 NwaCegarLoop]: 1832 mSDtfsCounter, 9676 mSDsluCounter, 9895 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9676 SdHoareTripleChecker+Valid, 11727 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:23,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9676 Valid, 11727 Invalid, 477 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:34:23,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2023-11-19 07:34:23,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1135. [2023-11-19 07:34:23,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 1.6613756613756614) internal successors, (1884), 1134 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1884 transitions. [2023-11-19 07:34:23,440 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1884 transitions. Word has length 336 [2023-11-19 07:34:23,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:23,440 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 1884 transitions. [2023-11-19 07:34:23,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 42.0) internal successors, (336), 8 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1884 transitions. [2023-11-19 07:34:23,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-11-19 07:34:23,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:23,448 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] [2023-11-19 07:34:23,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:34:23,449 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:23,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:23,449 INFO L85 PathProgramCache]: Analyzing trace with hash 204319362, now seen corresponding path program 1 times [2023-11-19 07:34:23,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:23,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83939182] [2023-11-19 07:34:23,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:23,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:28,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:28,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83939182] [2023-11-19 07:34:28,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83939182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:28,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:28,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:34:28,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723572519] [2023-11-19 07:34:28,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:28,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:34:28,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:28,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:34:28,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:34:28,105 INFO L87 Difference]: Start difference. First operand 1135 states and 1884 transitions. Second operand has 7 states, 7 states have (on average 48.142857142857146) internal successors, (337), 7 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:29,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:29,448 INFO L93 Difference]: Finished difference Result 3001 states and 4987 transitions. [2023-11-19 07:34:29,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:29,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 48.142857142857146) internal successors, (337), 7 states have internal predecessors, (337), 0 states have call successors, (0), 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 337 [2023-11-19 07:34:29,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:29,460 INFO L225 Difference]: With dead ends: 3001 [2023-11-19 07:34:29,460 INFO L226 Difference]: Without dead ends: 1889 [2023-11-19 07:34:29,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:34:29,465 INFO L413 NwaCegarLoop]: 1663 mSDtfsCounter, 2423 mSDsluCounter, 4054 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 5717 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:29,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 5717 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:34:29,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2023-11-19 07:34:29,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1138. [2023-11-19 07:34:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 1.6596306068601583) internal successors, (1887), 1137 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1887 transitions. [2023-11-19 07:34:29,504 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1887 transitions. Word has length 337 [2023-11-19 07:34:29,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:29,505 INFO L495 AbstractCegarLoop]: Abstraction has 1138 states and 1887 transitions. [2023-11-19 07:34:29,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.142857142857146) internal successors, (337), 7 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:29,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1887 transitions. [2023-11-19 07:34:29,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-11-19 07:34:29,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:29,512 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] [2023-11-19 07:34:29,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:34:29,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:29,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:29,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1845068480, now seen corresponding path program 1 times [2023-11-19 07:34:29,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:29,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270856271] [2023-11-19 07:34:29,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:29,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:32,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:32,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270856271] [2023-11-19 07:34:32,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270856271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:32,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:32,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:34:32,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210982505] [2023-11-19 07:34:32,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:32,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:34:32,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:32,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:34:32,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:34:32,987 INFO L87 Difference]: Start difference. First operand 1138 states and 1887 transitions. Second operand has 7 states, 7 states have (on average 48.142857142857146) internal successors, (337), 7 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:33,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:33,299 INFO L93 Difference]: Finished difference Result 4817 states and 8002 transitions. [2023-11-19 07:34:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:34:33,300 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 48.142857142857146) internal successors, (337), 7 states have internal predecessors, (337), 0 states have call successors, (0), 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 337 [2023-11-19 07:34:33,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:33,320 INFO L225 Difference]: With dead ends: 4817 [2023-11-19 07:34:33,320 INFO L226 Difference]: Without dead ends: 3702 [2023-11-19 07:34:33,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:34:33,324 INFO L413 NwaCegarLoop]: 2000 mSDtfsCounter, 5647 mSDsluCounter, 7136 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5647 SdHoareTripleChecker+Valid, 9136 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:33,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5647 Valid, 9136 Invalid, 70 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:33,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2023-11-19 07:34:33,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 1866. [2023-11-19 07:34:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 1.6616621983914208) internal successors, (3099), 1865 states have internal predecessors, (3099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:33,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 3099 transitions. [2023-11-19 07:34:33,402 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 3099 transitions. Word has length 337 [2023-11-19 07:34:33,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:33,403 INFO L495 AbstractCegarLoop]: Abstraction has 1866 states and 3099 transitions. [2023-11-19 07:34:33,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 48.142857142857146) internal successors, (337), 7 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:33,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 3099 transitions. [2023-11-19 07:34:33,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2023-11-19 07:34:33,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:33,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:33,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:34:33,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:33,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:33,415 INFO L85 PathProgramCache]: Analyzing trace with hash -128464401, now seen corresponding path program 1 times [2023-11-19 07:34:33,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:33,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422124500] [2023-11-19 07:34:33,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:33,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat