./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label31.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_d4d419f0-fbab-46ea-a405-9252989b0f62/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d419f0-fbab-46ea-a405-9252989b0f62/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_d4d419f0-fbab-46ea-a405-9252989b0f62/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d419f0-fbab-46ea-a405-9252989b0f62/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label31.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d419f0-fbab-46ea-a405-9252989b0f62/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d419f0-fbab-46ea-a405-9252989b0f62/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 32bit --witnessprinter.graph.data.programhash af3862af5b8a27b2989fe566f1104f15a4544b51e9167db28055ff534e84b220 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:29:02,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:29:03,003 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d419f0-fbab-46ea-a405-9252989b0f62/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:29:03,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:29:03,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:29:03,061 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:29:03,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:29:03,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:29:03,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:29:03,071 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:29:03,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:29:03,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:29:03,073 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:29:03,075 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:29:03,075 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:29:03,076 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:29:03,076 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:29:03,077 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:29:03,077 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:29:03,077 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:29:03,078 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:29:03,078 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:29:03,079 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:29:03,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:29:03,080 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:29:03,081 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:29:03,081 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:29:03,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:29:03,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:29:03,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:29:03,093 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:29:03,093 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:29:03,093 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:29:03,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:29:03,094 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:29:03,094 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:29:03,094 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:29:03,094 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:29:03,095 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:29:03,095 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_d4d419f0-fbab-46ea-a405-9252989b0f62/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d419f0-fbab-46ea-a405-9252989b0f62/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af3862af5b8a27b2989fe566f1104f15a4544b51e9167db28055ff534e84b220 [2023-11-12 02:29:03,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:29:03,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:29:03,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:29:03,477 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:29:03,477 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:29:03,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d419f0-fbab-46ea-a405-9252989b0f62/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/eca-rers2012/Problem17_label31.c [2023-11-12 02:29:06,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:29:07,137 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:29:07,138 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d419f0-fbab-46ea-a405-9252989b0f62/sv-benchmarks/c/eca-rers2012/Problem17_label31.c [2023-11-12 02:29:07,166 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d419f0-fbab-46ea-a405-9252989b0f62/bin/uautomizer-verify-uTZkv6EMXl/data/3632d2b92/5c61aa79d08f4eee9ce944a8f9382076/FLAG596540bd6 [2023-11-12 02:29:07,181 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d419f0-fbab-46ea-a405-9252989b0f62/bin/uautomizer-verify-uTZkv6EMXl/data/3632d2b92/5c61aa79d08f4eee9ce944a8f9382076 [2023-11-12 02:29:07,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:29:07,186 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:29:07,187 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:29:07,187 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:29:07,193 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:29:07,194 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:29:07" (1/1) ... [2023-11-12 02:29:07,195 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27fa8d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:07, skipping insertion in model container [2023-11-12 02:29:07,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:29:07" (1/1) ... [2023-11-12 02:29:07,294 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:29:07,550 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_d4d419f0-fbab-46ea-a405-9252989b0f62/sv-benchmarks/c/eca-rers2012/Problem17_label31.c[1403,1416] [2023-11-12 02:29:08,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:29:08,492 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:29:08,512 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_d4d419f0-fbab-46ea-a405-9252989b0f62/sv-benchmarks/c/eca-rers2012/Problem17_label31.c[1403,1416] [2023-11-12 02:29:08,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:29:08,980 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:29:08,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08 WrapperNode [2023-11-12 02:29:08,981 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:29:08,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:29:08,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:29:08,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:29:08,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:09,044 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:09,331 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2023-11-12 02:29:09,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:29:09,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:29:09,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:29:09,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:29:09,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:09,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:09,388 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:09,388 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:09,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:09,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:09,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:09,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:09,815 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:29:09,817 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:29:09,817 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:29:09,818 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:29:09,818 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:09,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:29:09,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d419f0-fbab-46ea-a405-9252989b0f62/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:09,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d419f0-fbab-46ea-a405-9252989b0f62/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:29:09,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4d419f0-fbab-46ea-a405-9252989b0f62/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:29:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:29:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:29:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:29:09,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:29:10,047 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:29:10,050 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:29:14,367 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:29:14,393 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:29:14,393 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:29:14,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:14 BoogieIcfgContainer [2023-11-12 02:29:14,398 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:29:14,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:29:14,403 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:29:14,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:29:14,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:29:07" (1/3) ... [2023-11-12 02:29:14,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5806d8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:29:14, skipping insertion in model container [2023-11-12 02:29:14,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (2/3) ... [2023-11-12 02:29:14,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5806d8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:29:14, skipping insertion in model container [2023-11-12 02:29:14,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:14" (3/3) ... [2023-11-12 02:29:14,413 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label31.c [2023-11-12 02:29:14,434 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:29:14,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:29:14,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:29:14,534 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;@325e7469, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:29:14,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:29:14,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 02:29:14,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:29:14,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:14,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:14,555 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:14,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:14,561 INFO L85 PathProgramCache]: Analyzing trace with hash 297966002, now seen corresponding path program 1 times [2023-11-12 02:29:14,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:14,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173302160] [2023-11-12 02:29:14,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:14,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:14,775 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 02:29:14,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:14,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173302160] [2023-11-12 02:29:14,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173302160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:14,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:14,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:14,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991399973] [2023-11-12 02:29:14,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:14,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:14,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:14,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:14,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:14,837 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 02:29:18,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:18,703 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2023-11-12 02:29:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:18,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-11-12 02:29:18,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:18,727 INFO L225 Difference]: With dead ends: 1644 [2023-11-12 02:29:18,727 INFO L226 Difference]: Without dead ends: 977 [2023-11-12 02:29:18,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:18,738 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 480 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:18,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-12 02:29:18,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-11-12 02:29:18,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2023-11-12 02:29:18,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 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 02:29:18,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2023-11-12 02:29:18,850 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 8 [2023-11-12 02:29:18,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:18,851 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2023-11-12 02:29:18,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 02:29:18,852 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2023-11-12 02:29:18,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-12 02:29:18,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:18,855 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:18,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:29:18,856 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:18,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:18,857 INFO L85 PathProgramCache]: Analyzing trace with hash -623083190, now seen corresponding path program 1 times [2023-11-12 02:29:18,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:18,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019718] [2023-11-12 02:29:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:18,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:19,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:19,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019718] [2023-11-12 02:29:19,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:19,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:19,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:19,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004561829] [2023-11-12 02:29:19,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:19,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:19,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:19,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:19,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:19,219 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 02:29:22,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:22,657 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2023-11-12 02:29:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:22,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-11-12 02:29:22,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:22,674 INFO L225 Difference]: With dead ends: 2813 [2023-11-12 02:29:22,675 INFO L226 Difference]: Without dead ends: 1844 [2023-11-12 02:29:22,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:22,686 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:22,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-12 02:29:22,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2023-11-12 02:29:22,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2023-11-12 02:29:22,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.35) internal successors, (2484), 1840 states have internal predecessors, (2484), 0 states have call successors, (0), 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 02:29:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2023-11-12 02:29:22,752 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 75 [2023-11-12 02:29:22,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:22,754 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2023-11-12 02:29:22,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 02:29:22,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2023-11-12 02:29:22,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-12 02:29:22,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:22,759 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:22,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:29:22,760 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:22,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:22,771 INFO L85 PathProgramCache]: Analyzing trace with hash 464036830, now seen corresponding path program 1 times [2023-11-12 02:29:22,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:22,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232870330] [2023-11-12 02:29:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:22,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:23,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:23,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232870330] [2023-11-12 02:29:23,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232870330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:23,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:23,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:23,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180662278] [2023-11-12 02:29:23,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:23,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:23,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:23,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:23,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:23,199 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 02:29:28,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:28,806 INFO L93 Difference]: Finished difference Result 5863 states and 8156 transitions. [2023-11-12 02:29:28,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:29:28,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-12 02:29:28,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:28,831 INFO L225 Difference]: With dead ends: 5863 [2023-11-12 02:29:28,832 INFO L226 Difference]: Without dead ends: 4024 [2023-11-12 02:29:28,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:28,836 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2906 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 3603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 2906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:28,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 437 Invalid, 3603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 2906 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-12 02:29:28,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2023-11-12 02:29:28,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 4020. [2023-11-12 02:29:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4020 states, 4019 states have (on average 1.3262005473998506) internal successors, (5330), 4019 states have internal predecessors, (5330), 0 states have call successors, (0), 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 02:29:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4020 states to 4020 states and 5330 transitions. [2023-11-12 02:29:28,942 INFO L78 Accepts]: Start accepts. Automaton has 4020 states and 5330 transitions. Word has length 78 [2023-11-12 02:29:28,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:28,943 INFO L495 AbstractCegarLoop]: Abstraction has 4020 states and 5330 transitions. [2023-11-12 02:29:28,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 02:29:28,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states and 5330 transitions. [2023-11-12 02:29:28,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-12 02:29:28,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:28,948 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:28,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:29:28,948 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:28,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:28,949 INFO L85 PathProgramCache]: Analyzing trace with hash 476193059, now seen corresponding path program 1 times [2023-11-12 02:29:28,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:28,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542630687] [2023-11-12 02:29:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:28,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-12 02:29:29,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:29,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542630687] [2023-11-12 02:29:29,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542630687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:29,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:29,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:29,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354110786] [2023-11-12 02:29:29,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:29,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:29,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:29,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:29,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:29,195 INFO L87 Difference]: Start difference. First operand 4020 states and 5330 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 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 02:29:32,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:32,052 INFO L93 Difference]: Finished difference Result 10602 states and 14364 transitions. [2023-11-12 02:29:32,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:32,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 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 143 [2023-11-12 02:29:32,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:32,088 INFO L225 Difference]: With dead ends: 10602 [2023-11-12 02:29:32,088 INFO L226 Difference]: Without dead ends: 6580 [2023-11-12 02:29:32,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:32,095 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:32,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-12 02:29:32,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6580 states. [2023-11-12 02:29:32,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6580 to 5305. [2023-11-12 02:29:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5305 states, 5304 states have (on average 1.2268099547511313) internal successors, (6507), 5304 states have internal predecessors, (6507), 0 states have call successors, (0), 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 02:29:32,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5305 states to 5305 states and 6507 transitions. [2023-11-12 02:29:32,226 INFO L78 Accepts]: Start accepts. Automaton has 5305 states and 6507 transitions. Word has length 143 [2023-11-12 02:29:32,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:32,227 INFO L495 AbstractCegarLoop]: Abstraction has 5305 states and 6507 transitions. [2023-11-12 02:29:32,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 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 02:29:32,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5305 states and 6507 transitions. [2023-11-12 02:29:32,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-12 02:29:32,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:32,230 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:29:32,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:29:32,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:32,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:32,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1155607585, now seen corresponding path program 1 times [2023-11-12 02:29:32,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:32,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615706450] [2023-11-12 02:29:32,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:32,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:32,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:32,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615706450] [2023-11-12 02:29:32,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615706450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:32,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:32,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:29:32,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981471281] [2023-11-12 02:29:32,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:32,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:29:32,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:32,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:29:32,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:29:32,743 INFO L87 Difference]: Start difference. First operand 5305 states and 6507 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 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 02:29:36,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:36,382 INFO L93 Difference]: Finished difference Result 13183 states and 16554 transitions. [2023-11-12 02:29:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:29:36,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2023-11-12 02:29:36,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:36,433 INFO L225 Difference]: With dead ends: 13183 [2023-11-12 02:29:36,434 INFO L226 Difference]: Without dead ends: 7880 [2023-11-12 02:29:36,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:29:36,445 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 1094 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:36,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 868 Invalid, 2723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-12 02:29:36,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7880 states. [2023-11-12 02:29:36,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7880 to 7862. [2023-11-12 02:29:36,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7862 states, 7861 states have (on average 1.2101513802315227) internal successors, (9513), 7861 states have internal predecessors, (9513), 0 states have call successors, (0), 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 02:29:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7862 states to 7862 states and 9513 transitions. [2023-11-12 02:29:36,649 INFO L78 Accepts]: Start accepts. Automaton has 7862 states and 9513 transitions. Word has length 156 [2023-11-12 02:29:36,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:36,651 INFO L495 AbstractCegarLoop]: Abstraction has 7862 states and 9513 transitions. [2023-11-12 02:29:36,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 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 02:29:36,652 INFO L276 IsEmpty]: Start isEmpty. Operand 7862 states and 9513 transitions. [2023-11-12 02:29:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-11-12 02:29:36,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:36,659 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:36,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:29:36,660 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:36,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:36,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1429759075, now seen corresponding path program 1 times [2023-11-12 02:29:36,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:36,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112540800] [2023-11-12 02:29:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:36,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-11-12 02:29:36,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:36,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112540800] [2023-11-12 02:29:36,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112540800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:36,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:36,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:36,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859599814] [2023-11-12 02:29:36,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:36,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:36,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:36,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:36,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:36,984 INFO L87 Difference]: Start difference. First operand 7862 states and 9513 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 02:29:40,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:40,135 INFO L93 Difference]: Finished difference Result 19110 states and 23099 transitions. [2023-11-12 02:29:40,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:40,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 261 [2023-11-12 02:29:40,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:40,180 INFO L225 Difference]: With dead ends: 19110 [2023-11-12 02:29:40,180 INFO L226 Difference]: Without dead ends: 10400 [2023-11-12 02:29:40,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:40,190 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 436 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 1620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:40,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 952 Invalid, 1620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-12 02:29:40,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10400 states. [2023-11-12 02:29:40,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10400 to 7415. [2023-11-12 02:29:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7415 states, 7414 states have (on average 1.1657674669544105) internal successors, (8643), 7414 states have internal predecessors, (8643), 0 states have call successors, (0), 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 02:29:40,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7415 states to 7415 states and 8643 transitions. [2023-11-12 02:29:40,361 INFO L78 Accepts]: Start accepts. Automaton has 7415 states and 8643 transitions. Word has length 261 [2023-11-12 02:29:40,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:40,362 INFO L495 AbstractCegarLoop]: Abstraction has 7415 states and 8643 transitions. [2023-11-12 02:29:40,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 02:29:40,363 INFO L276 IsEmpty]: Start isEmpty. Operand 7415 states and 8643 transitions. [2023-11-12 02:29:40,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2023-11-12 02:29:40,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:40,368 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:40,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:29:40,369 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:40,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:40,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1211264295, now seen corresponding path program 1 times [2023-11-12 02:29:40,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:40,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593517497] [2023-11-12 02:29:40,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:40,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-11-12 02:29:40,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:40,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593517497] [2023-11-12 02:29:40,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593517497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:40,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:40,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:40,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784319062] [2023-11-12 02:29:40,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:40,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:40,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:40,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:40,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:40,620 INFO L87 Difference]: Start difference. First operand 7415 states and 8643 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 02:29:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:43,301 INFO L93 Difference]: Finished difference Result 18651 states and 21996 transitions. [2023-11-12 02:29:43,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:43,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 265 [2023-11-12 02:29:43,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:43,333 INFO L225 Difference]: With dead ends: 18651 [2023-11-12 02:29:43,333 INFO L226 Difference]: Without dead ends: 11237 [2023-11-12 02:29:43,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:43,344 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 452 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:43,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 425 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-12 02:29:43,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11237 states. [2023-11-12 02:29:43,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11237 to 8667. [2023-11-12 02:29:43,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8667 states, 8666 states have (on average 1.1520886222017077) internal successors, (9984), 8666 states have internal predecessors, (9984), 0 states have call successors, (0), 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 02:29:43,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8667 states to 8667 states and 9984 transitions. [2023-11-12 02:29:43,596 INFO L78 Accepts]: Start accepts. Automaton has 8667 states and 9984 transitions. Word has length 265 [2023-11-12 02:29:43,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:43,597 INFO L495 AbstractCegarLoop]: Abstraction has 8667 states and 9984 transitions. [2023-11-12 02:29:43,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 02:29:43,598 INFO L276 IsEmpty]: Start isEmpty. Operand 8667 states and 9984 transitions. [2023-11-12 02:29:43,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-11-12 02:29:43,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:43,603 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:43,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:29:43,604 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:43,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:43,605 INFO L85 PathProgramCache]: Analyzing trace with hash 579184571, now seen corresponding path program 1 times [2023-11-12 02:29:43,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:43,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695239897] [2023-11-12 02:29:43,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:43,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-11-12 02:29:43,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:43,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695239897] [2023-11-12 02:29:43,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695239897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:43,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:43,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:43,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670825134] [2023-11-12 02:29:43,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:43,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:43,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:43,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:43,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:43,882 INFO L87 Difference]: Start difference. First operand 8667 states and 9984 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 02:29:46,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:46,625 INFO L93 Difference]: Finished difference Result 22011 states and 25365 transitions. [2023-11-12 02:29:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:46,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 278 [2023-11-12 02:29:46,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:46,652 INFO L225 Difference]: With dead ends: 22011 [2023-11-12 02:29:46,652 INFO L226 Difference]: Without dead ends: 13346 [2023-11-12 02:29:46,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:46,663 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:46,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 396 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-12 02:29:46,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13346 states. [2023-11-12 02:29:46,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13346 to 11642. [2023-11-12 02:29:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11642 states, 11641 states have (on average 1.1441456919508632) internal successors, (13319), 11641 states have internal predecessors, (13319), 0 states have call successors, (0), 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 02:29:46,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11642 states to 11642 states and 13319 transitions. [2023-11-12 02:29:46,921 INFO L78 Accepts]: Start accepts. Automaton has 11642 states and 13319 transitions. Word has length 278 [2023-11-12 02:29:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:46,922 INFO L495 AbstractCegarLoop]: Abstraction has 11642 states and 13319 transitions. [2023-11-12 02:29:46,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 02:29:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 11642 states and 13319 transitions. [2023-11-12 02:29:46,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-11-12 02:29:46,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:46,930 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:46,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:29:46,930 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:46,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:46,931 INFO L85 PathProgramCache]: Analyzing trace with hash -386597272, now seen corresponding path program 1 times [2023-11-12 02:29:46,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:46,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719721954] [2023-11-12 02:29:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:46,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:29:47,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:47,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719721954] [2023-11-12 02:29:47,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719721954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:47,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:47,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:47,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813552314] [2023-11-12 02:29:47,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:47,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:47,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:47,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:47,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:47,418 INFO L87 Difference]: Start difference. First operand 11642 states and 13319 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 02:29:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:50,166 INFO L93 Difference]: Finished difference Result 28847 states and 33336 transitions. [2023-11-12 02:29:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:50,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 322 [2023-11-12 02:29:50,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:50,200 INFO L225 Difference]: With dead ends: 28847 [2023-11-12 02:29:50,200 INFO L226 Difference]: Without dead ends: 16782 [2023-11-12 02:29:50,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:50,214 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 382 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:50,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 915 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-12 02:29:50,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16782 states. [2023-11-12 02:29:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16782 to 16349. [2023-11-12 02:29:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16349 states, 16348 states have (on average 1.1292512845608025) internal successors, (18461), 16348 states have internal predecessors, (18461), 0 states have call successors, (0), 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 02:29:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16349 states to 16349 states and 18461 transitions. [2023-11-12 02:29:50,628 INFO L78 Accepts]: Start accepts. Automaton has 16349 states and 18461 transitions. Word has length 322 [2023-11-12 02:29:50,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:50,630 INFO L495 AbstractCegarLoop]: Abstraction has 16349 states and 18461 transitions. [2023-11-12 02:29:50,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 02:29:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 16349 states and 18461 transitions. [2023-11-12 02:29:50,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2023-11-12 02:29:50,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:50,650 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:50,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:29:50,651 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:50,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1998283090, now seen corresponding path program 1 times [2023-11-12 02:29:50,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:50,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300918410] [2023-11-12 02:29:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:50,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-12 02:29:51,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:51,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300918410] [2023-11-12 02:29:51,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300918410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:51,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:51,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:29:51,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468930291] [2023-11-12 02:29:51,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:51,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:51,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:51,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:51,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:51,122 INFO L87 Difference]: Start difference. First operand 16349 states and 18461 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 02:29:53,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:53,908 INFO L93 Difference]: Finished difference Result 39113 states and 44253 transitions. [2023-11-12 02:29:53,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:53,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 329 [2023-11-12 02:29:53,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:54,033 INFO L225 Difference]: With dead ends: 39113 [2023-11-12 02:29:54,033 INFO L226 Difference]: Without dead ends: 22333 [2023-11-12 02:29:54,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:54,049 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 393 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:54,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 771 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-12 02:29:54,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22333 states. [2023-11-12 02:29:54,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22333 to 19346. [2023-11-12 02:29:54,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19346 states, 19345 states have (on average 1.1327991729128974) internal successors, (21914), 19345 states have internal predecessors, (21914), 0 states have call successors, (0), 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 02:29:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19346 states to 19346 states and 21914 transitions. [2023-11-12 02:29:54,324 INFO L78 Accepts]: Start accepts. Automaton has 19346 states and 21914 transitions. Word has length 329 [2023-11-12 02:29:54,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:54,325 INFO L495 AbstractCegarLoop]: Abstraction has 19346 states and 21914 transitions. [2023-11-12 02:29:54,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 02:29:54,326 INFO L276 IsEmpty]: Start isEmpty. Operand 19346 states and 21914 transitions.