./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label45.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label45.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd --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 80a9d77596eed268b316c6bc5991cccbe6552bee72fbd476389165b1c4f714b5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:11:02,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:11:03,096 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 16:11:03,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:11:03,108 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:11:03,159 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:11:03,160 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:11:03,161 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:11:03,162 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:11:03,162 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:11:03,163 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:11:03,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:11:03,164 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:11:03,164 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:11:03,164 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:11:03,165 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:11:03,165 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:11:03,165 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:11:03,165 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:11:03,166 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:11:03,166 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:11:03,166 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:11:03,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:11:03,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:11:03,167 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:11:03,167 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:11:03,167 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:11:03,167 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:11:03,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:11:03,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:11:03,168 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:11:03,168 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:11:03,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:11:03,169 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:11:03,169 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:11:03,169 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:11:03,169 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:11:03,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:11:03,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:11:03,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:11:03,170 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:11:03,170 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:11:03,170 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd 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 -> 80a9d77596eed268b316c6bc5991cccbe6552bee72fbd476389165b1c4f714b5 [2024-11-13 16:11:03,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:11:03,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:11:03,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:11:03,671 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:11:03,672 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:11:03,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem19_label45.c Unable to find full path for "g++" [2024-11-13 16:11:05,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:11:06,968 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:11:06,970 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/sv-benchmarks/c/eca-rers2012/Problem19_label45.c [2024-11-13 16:11:07,034 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/data/82663d0dc/0df1b1d171f84b1e95a9647aa3d00ec4/FLAG605ee95a1 [2024-11-13 16:11:07,059 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/data/82663d0dc/0df1b1d171f84b1e95a9647aa3d00ec4 [2024-11-13 16:11:07,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:11:07,066 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:11:07,069 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:11:07,069 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:11:07,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:11:07,077 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:11:07" (1/1) ... [2024-11-13 16:11:07,081 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4bb18b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:07, skipping insertion in model container [2024-11-13 16:11:07,081 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:11:07" (1/1) ... [2024-11-13 16:11:07,315 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:11:07,730 WARN L250 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_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/sv-benchmarks/c/eca-rers2012/Problem19_label45.c[6276,6289] [2024-11-13 16:11:09,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:11:09,623 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:11:09,657 WARN L250 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_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/sv-benchmarks/c/eca-rers2012/Problem19_label45.c[6276,6289] [2024-11-13 16:11:10,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:11:10,919 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:11:10,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:10 WrapperNode [2024-11-13 16:11:10,921 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:11:10,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:11:10,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:11:10,922 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:11:10,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:10" (1/1) ... [2024-11-13 16:11:11,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:10" (1/1) ... [2024-11-13 16:11:12,178 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9430 [2024-11-13 16:11:12,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:11:12,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:11:12,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:11:12,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:11:12,194 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:10" (1/1) ... [2024-11-13 16:11:12,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:10" (1/1) ... [2024-11-13 16:11:12,524 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:10" (1/1) ... [2024-11-13 16:11:12,989 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 16:11:12,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:10" (1/1) ... [2024-11-13 16:11:12,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:10" (1/1) ... [2024-11-13 16:11:13,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:10" (1/1) ... [2024-11-13 16:11:13,591 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:10" (1/1) ... [2024-11-13 16:11:13,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:10" (1/1) ... [2024-11-13 16:11:13,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:10" (1/1) ... [2024-11-13 16:11:13,927 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:11:13,929 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:11:13,930 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:11:13,930 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:11:13,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:10" (1/1) ... [2024-11-13 16:11:13,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:11:13,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:13,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:11:14,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:11:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:11:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:11:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:11:14,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:11:14,168 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:11:14,171 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:11:27,839 INFO L? ?]: Removed 1320 outVars from TransFormulas that were not future-live. [2024-11-13 16:11:27,840 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:11:27,925 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:11:27,928 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 16:11:27,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:11:27 BoogieIcfgContainer [2024-11-13 16:11:27,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:11:27,935 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:11:27,936 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:11:27,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:11:27,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:11:07" (1/3) ... [2024-11-13 16:11:27,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7611e34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:11:27, skipping insertion in model container [2024-11-13 16:11:27,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:10" (2/3) ... [2024-11-13 16:11:27,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7611e34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:11:27, skipping insertion in model container [2024-11-13 16:11:27,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:11:27" (3/3) ... [2024-11-13 16:11:27,949 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label45.c [2024-11-13 16:11:27,971 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:11:27,976 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem19_label45.c that has 1 procedures, 1748 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 16:11:28,153 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:11:28,172 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15290aa6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:11:28,173 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 16:11:28,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:28,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 16:11:28,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:28,203 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:28,204 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:28,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:28,212 INFO L85 PathProgramCache]: Analyzing trace with hash 759608880, now seen corresponding path program 1 times [2024-11-13 16:11:28,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:28,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331805945] [2024-11-13 16:11:28,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:28,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:29,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331805945] [2024-11-13 16:11:29,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331805945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:29,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:29,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:11:29,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494156196] [2024-11-13 16:11:29,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:29,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:11:29,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:29,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:11:29,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:11:29,285 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:46,619 INFO L93 Difference]: Finished difference Result 6287 states and 12043 transitions. [2024-11-13 16:11:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:11:46,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2024-11-13 16:11:46,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:46,661 INFO L225 Difference]: With dead ends: 6287 [2024-11-13 16:11:46,662 INFO L226 Difference]: Without dead ends: 4470 [2024-11-13 16:11:46,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:11:46,678 INFO L432 NwaCegarLoop]: 714 mSDtfsCounter, 4597 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 7115 mSolverCounterSat, 3689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4597 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 10804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3689 IncrementalHoareTripleChecker+Valid, 7115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:46,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4597 Valid, 992 Invalid, 10804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3689 Valid, 7115 Invalid, 0 Unknown, 0 Unchecked, 16.6s Time] [2024-11-13 16:11:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2024-11-13 16:11:46,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4467. [2024-11-13 16:11:46,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 4466 states have (on average 1.5685176892073445) internal successors, (7005), 4466 states have internal predecessors, (7005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:46,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 7005 transitions. [2024-11-13 16:11:46,908 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 7005 transitions. Word has length 47 [2024-11-13 16:11:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:46,908 INFO L471 AbstractCegarLoop]: Abstraction has 4467 states and 7005 transitions. [2024-11-13 16:11:46,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 7005 transitions. [2024-11-13 16:11:46,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-13 16:11:46,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:46,920 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:46,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:11:46,921 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:46,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:46,922 INFO L85 PathProgramCache]: Analyzing trace with hash -574823349, now seen corresponding path program 1 times [2024-11-13 16:11:46,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:46,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243124238] [2024-11-13 16:11:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:46,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 16:11:48,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:48,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243124238] [2024-11-13 16:11:48,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243124238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:48,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:48,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:11:48,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164284553] [2024-11-13 16:11:48,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:48,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:11:48,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:11:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:11:48,829 INFO L87 Difference]: Start difference. First operand 4467 states and 7005 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:01,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:01,927 INFO L93 Difference]: Finished difference Result 11709 states and 20252 transitions. [2024-11-13 16:12:01,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:12:01,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 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 321 [2024-11-13 16:12:01,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:01,957 INFO L225 Difference]: With dead ends: 11709 [2024-11-13 16:12:01,958 INFO L226 Difference]: Without dead ends: 8609 [2024-11-13 16:12:01,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:12:01,963 INFO L432 NwaCegarLoop]: 1804 mSDtfsCounter, 3756 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9457 mSolverCounterSat, 1343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 10800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1343 IncrementalHoareTripleChecker+Valid, 9457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:01,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 2158 Invalid, 10800 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1343 Valid, 9457 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2024-11-13 16:12:01,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8609 states. [2024-11-13 16:12:02,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8609 to 8595. [2024-11-13 16:12:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8595 states, 8594 states have (on average 1.350942518035839) internal successors, (11610), 8594 states have internal predecessors, (11610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8595 states to 8595 states and 11610 transitions. [2024-11-13 16:12:02,144 INFO L78 Accepts]: Start accepts. Automaton has 8595 states and 11610 transitions. Word has length 321 [2024-11-13 16:12:02,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:02,145 INFO L471 AbstractCegarLoop]: Abstraction has 8595 states and 11610 transitions. [2024-11-13 16:12:02,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 8595 states and 11610 transitions. [2024-11-13 16:12:02,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-11-13 16:12:02,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:02,157 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:02,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:12:02,157 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:02,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:02,162 INFO L85 PathProgramCache]: Analyzing trace with hash 459045861, now seen corresponding path program 1 times [2024-11-13 16:12:02,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:02,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622975917] [2024-11-13 16:12:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:02,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 16:12:03,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:03,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622975917] [2024-11-13 16:12:03,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622975917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:03,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:03,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:12:03,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742350145] [2024-11-13 16:12:03,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:03,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:12:03,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:03,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:12:03,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:12:03,122 INFO L87 Difference]: Start difference. First operand 8595 states and 11610 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:11,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:11,278 INFO L93 Difference]: Finished difference Result 14489 states and 20501 transitions. [2024-11-13 16:12:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:12:11,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 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 349 [2024-11-13 16:12:11,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:11,311 INFO L225 Difference]: With dead ends: 14489 [2024-11-13 16:12:11,311 INFO L226 Difference]: Without dead ends: 8595 [2024-11-13 16:12:11,321 INFO L431 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 [2024-11-13 16:12:11,322 INFO L432 NwaCegarLoop]: 1776 mSDtfsCounter, 1138 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7327 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 7335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:11,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2118 Invalid, 7335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7327 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-11-13 16:12:11,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8595 states. [2024-11-13 16:12:11,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8595 to 8595. [2024-11-13 16:12:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8595 states, 8594 states have (on average 1.349429834768443) internal successors, (11597), 8594 states have internal predecessors, (11597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:11,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8595 states to 8595 states and 11597 transitions. [2024-11-13 16:12:11,587 INFO L78 Accepts]: Start accepts. Automaton has 8595 states and 11597 transitions. Word has length 349 [2024-11-13 16:12:11,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:11,589 INFO L471 AbstractCegarLoop]: Abstraction has 8595 states and 11597 transitions. [2024-11-13 16:12:11,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:11,591 INFO L276 IsEmpty]: Start isEmpty. Operand 8595 states and 11597 transitions. [2024-11-13 16:12:11,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2024-11-13 16:12:11,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:11,613 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:11,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:12:11,614 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:11,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:11,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1475696478, now seen corresponding path program 1 times [2024-11-13 16:12:11,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:11,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530353242] [2024-11-13 16:12:11,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:11,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 111 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:13,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:13,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530353242] [2024-11-13 16:12:13,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530353242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:13,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725160269] [2024-11-13 16:12:13,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:13,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:13,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:13,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:13,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:12:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:13,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 16:12:13,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:13,999 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:12:13,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725160269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:13,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:12:14,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-13 16:12:14,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095790342] [2024-11-13 16:12:14,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:14,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:12:14,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:14,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:12:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:12:14,003 INFO L87 Difference]: Start difference. First operand 8595 states and 11597 transitions. Second operand has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:21,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:21,698 INFO L93 Difference]: Finished difference Result 19939 states and 28772 transitions. [2024-11-13 16:12:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:12:21,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 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 601 [2024-11-13 16:12:21,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:21,740 INFO L225 Difference]: With dead ends: 19939 [2024-11-13 16:12:21,740 INFO L226 Difference]: Without dead ends: 14076 [2024-11-13 16:12:21,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:12:21,750 INFO L432 NwaCegarLoop]: 1367 mSDtfsCounter, 1743 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 3871 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 5599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:21,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 1505 Invalid, 5599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3871 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-13 16:12:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14076 states. [2024-11-13 16:12:21,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14076 to 14076. [2024-11-13 16:12:21,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14076 states, 14075 states have (on average 1.2716873889875666) internal successors, (17899), 14075 states have internal predecessors, (17899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14076 states to 14076 states and 17899 transitions. [2024-11-13 16:12:22,003 INFO L78 Accepts]: Start accepts. Automaton has 14076 states and 17899 transitions. Word has length 601 [2024-11-13 16:12:22,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:22,004 INFO L471 AbstractCegarLoop]: Abstraction has 14076 states and 17899 transitions. [2024-11-13 16:12:22,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.33333333333334) internal successors, (601), 3 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:22,005 INFO L276 IsEmpty]: Start isEmpty. Operand 14076 states and 17899 transitions. [2024-11-13 16:12:22,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2024-11-13 16:12:22,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:22,036 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:22,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 16:12:22,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:22,237 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:22,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:22,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1007867178, now seen corresponding path program 1 times [2024-11-13 16:12:22,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:22,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915459554] [2024-11-13 16:12:22,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:22,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 111 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:23,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:23,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915459554] [2024-11-13 16:12:23,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915459554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:23,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143655434] [2024-11-13 16:12:23,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:23,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:23,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:23,528 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:23,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:12:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:23,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 16:12:23,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:23,980 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:12:23,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143655434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:23,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:12:23,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-13 16:12:23,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911333948] [2024-11-13 16:12:23,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:23,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:12:23,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:23,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:12:23,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:12:23,985 INFO L87 Difference]: Start difference. First operand 14076 states and 17899 transitions. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:32,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:32,119 INFO L93 Difference]: Finished difference Result 36343 states and 47665 transitions. [2024-11-13 16:12:32,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:12:32,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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 603 [2024-11-13 16:12:32,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:32,188 INFO L225 Difference]: With dead ends: 36343 [2024-11-13 16:12:32,188 INFO L226 Difference]: Without dead ends: 24999 [2024-11-13 16:12:32,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:12:32,202 INFO L432 NwaCegarLoop]: 683 mSDtfsCounter, 2531 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4031 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 5503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:32,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2531 Valid, 793 Invalid, 5503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4031 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-13 16:12:32,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24999 states. [2024-11-13 16:12:32,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24999 to 23631. [2024-11-13 16:12:32,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23631 states, 23630 states have (on average 1.2681760473973762) internal successors, (29967), 23630 states have internal predecessors, (29967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23631 states to 23631 states and 29967 transitions. [2024-11-13 16:12:32,548 INFO L78 Accepts]: Start accepts. Automaton has 23631 states and 29967 transitions. Word has length 603 [2024-11-13 16:12:32,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:32,549 INFO L471 AbstractCegarLoop]: Abstraction has 23631 states and 29967 transitions. [2024-11-13 16:12:32,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 23631 states and 29967 transitions. [2024-11-13 16:12:32,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2024-11-13 16:12:32,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:32,556 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:32,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:12:32,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:32,757 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:32,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:32,758 INFO L85 PathProgramCache]: Analyzing trace with hash -2082377930, now seen corresponding path program 1 times [2024-11-13 16:12:32,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:32,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077854068] [2024-11-13 16:12:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:32,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:33,380 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-13 16:12:33,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:33,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077854068] [2024-11-13 16:12:33,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077854068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:33,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:33,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:12:33,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330387393] [2024-11-13 16:12:33,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:33,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:12:33,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:12:33,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:12:33,386 INFO L87 Difference]: Start difference. First operand 23631 states and 29967 transitions. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 2 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:41,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:41,143 INFO L93 Difference]: Finished difference Result 50002 states and 65072 transitions. [2024-11-13 16:12:41,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:12:41,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 2 states have internal predecessors, (559), 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 686 [2024-11-13 16:12:41,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:41,211 INFO L225 Difference]: With dead ends: 50002 [2024-11-13 16:12:41,211 INFO L226 Difference]: Without dead ends: 29103 [2024-11-13 16:12:41,229 INFO L431 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 [2024-11-13 16:12:41,231 INFO L432 NwaCegarLoop]: 662 mSDtfsCounter, 1372 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 2117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 6042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2117 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:41,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 706 Invalid, 6042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2117 Valid, 3925 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-13 16:12:41,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29103 states. [2024-11-13 16:12:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29103 to 29094. [2024-11-13 16:12:41,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29094 states, 29093 states have (on average 1.2563503248204035) internal successors, (36551), 29093 states have internal predecessors, (36551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:41,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29094 states to 29094 states and 36551 transitions. [2024-11-13 16:12:41,587 INFO L78 Accepts]: Start accepts. Automaton has 29094 states and 36551 transitions. Word has length 686 [2024-11-13 16:12:41,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:41,589 INFO L471 AbstractCegarLoop]: Abstraction has 29094 states and 36551 transitions. [2024-11-13 16:12:41,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 2 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:41,589 INFO L276 IsEmpty]: Start isEmpty. Operand 29094 states and 36551 transitions. [2024-11-13 16:12:41,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2024-11-13 16:12:41,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:41,717 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:41,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 16:12:41,717 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:41,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:41,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1026782337, now seen corresponding path program 1 times [2024-11-13 16:12:41,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:41,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299516718] [2024-11-13 16:12:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:41,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:43,504 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 111 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:43,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:43,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299516718] [2024-11-13 16:12:43,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299516718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:43,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155515533] [2024-11-13 16:12:43,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:43,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:43,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:43,507 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:43,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:12:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:43,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 16:12:43,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-13 16:12:43,926 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:12:43,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155515533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:43,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:12:43,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-13 16:12:43,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652175822] [2024-11-13 16:12:43,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:43,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:12:43,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:43,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:12:43,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:12:43,930 INFO L87 Difference]: Start difference. First operand 29094 states and 36551 transitions. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:52,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:52,565 INFO L93 Difference]: Finished difference Result 77359 states and 98235 transitions. [2024-11-13 16:12:52,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:12:52,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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 753 [2024-11-13 16:12:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:52,678 INFO L225 Difference]: With dead ends: 77359 [2024-11-13 16:12:52,679 INFO L226 Difference]: Without dead ends: 50997 [2024-11-13 16:12:52,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 752 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:12:52,705 INFO L432 NwaCegarLoop]: 3168 mSDtfsCounter, 1422 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 5063 mSolverCounterSat, 980 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 3338 SdHoareTripleChecker+Invalid, 6043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 980 IncrementalHoareTripleChecker+Valid, 5063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:52,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1422 Valid, 3338 Invalid, 6043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [980 Valid, 5063 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2024-11-13 16:12:52,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50997 states. [2024-11-13 16:12:53,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50997 to 49586. [2024-11-13 16:12:53,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49586 states, 49585 states have (on average 1.1970757285469396) internal successors, (59357), 49585 states have internal predecessors, (59357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:53,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49586 states to 49586 states and 59357 transitions. [2024-11-13 16:12:53,364 INFO L78 Accepts]: Start accepts. Automaton has 49586 states and 59357 transitions. Word has length 753 [2024-11-13 16:12:53,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:53,366 INFO L471 AbstractCegarLoop]: Abstraction has 49586 states and 59357 transitions. [2024-11-13 16:12:53,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand 49586 states and 59357 transitions. [2024-11-13 16:12:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2024-11-13 16:12:53,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:53,378 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:53,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 16:12:53,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:53,579 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:53,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:53,579 INFO L85 PathProgramCache]: Analyzing trace with hash -827284803, now seen corresponding path program 1 times [2024-11-13 16:12:53,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:53,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102029377] [2024-11-13 16:12:53,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:53,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-11-13 16:12:54,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:54,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102029377] [2024-11-13 16:12:54,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102029377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:54,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:54,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:12:54,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463867312] [2024-11-13 16:12:54,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:54,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:12:54,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:54,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:12:54,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:12:54,528 INFO L87 Difference]: Start difference. First operand 49586 states and 59357 transitions. Second operand has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:13:07,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:13:07,980 INFO L93 Difference]: Finished difference Result 155246 states and 189408 transitions. [2024-11-13 16:13:07,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:13:07,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 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 898 [2024-11-13 16:13:07,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:13:08,131 INFO L225 Difference]: With dead ends: 155246 [2024-11-13 16:13:08,132 INFO L226 Difference]: Without dead ends: 108392 [2024-11-13 16:13:08,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:13:08,172 INFO L432 NwaCegarLoop]: 883 mSDtfsCounter, 3256 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 8884 mSolverCounterSat, 2793 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3256 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 11677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2793 IncrementalHoareTripleChecker+Valid, 8884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:13:08,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3256 Valid, 1193 Invalid, 11677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2793 Valid, 8884 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2024-11-13 16:13:08,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108392 states. [2024-11-13 16:13:09,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108392 to 106963. [2024-11-13 16:13:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106963 states, 106962 states have (on average 1.17561376937604) internal successors, (125746), 106962 states have internal predecessors, (125746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:13:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106963 states to 106963 states and 125746 transitions. [2024-11-13 16:13:09,314 INFO L78 Accepts]: Start accepts. Automaton has 106963 states and 125746 transitions. Word has length 898 [2024-11-13 16:13:09,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:13:09,315 INFO L471 AbstractCegarLoop]: Abstraction has 106963 states and 125746 transitions. [2024-11-13 16:13:09,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.5) internal successors, (646), 4 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:13:09,316 INFO L276 IsEmpty]: Start isEmpty. Operand 106963 states and 125746 transitions. [2024-11-13 16:13:09,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2024-11-13 16:13:09,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:13:09,327 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:09,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 16:13:09,328 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:13:09,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:09,328 INFO L85 PathProgramCache]: Analyzing trace with hash 23775621, now seen corresponding path program 1 times [2024-11-13 16:13:09,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:09,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260802033] [2024-11-13 16:13:09,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:09,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:12,197 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 309 proven. 366 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-13 16:13:12,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:12,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260802033] [2024-11-13 16:13:12,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260802033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:13:12,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658703823] [2024-11-13 16:13:12,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:12,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:13:12,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:13:12,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:13:12,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:13:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:12,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 16:13:12,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:13:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2024-11-13 16:13:12,891 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:13:12,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658703823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:12,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:13:12,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-13 16:13:12,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642773883] [2024-11-13 16:13:12,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:12,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:13:12,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:12,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:13:12,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:13:12,896 INFO L87 Difference]: Start difference. First operand 106963 states and 125746 transitions. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:13:20,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:13:20,794 INFO L93 Difference]: Finished difference Result 244017 states and 291158 transitions. [2024-11-13 16:13:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:20,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 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 907 [2024-11-13 16:13:20,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:13:20,938 INFO L225 Difference]: With dead ends: 244017 [2024-11-13 16:13:20,938 INFO L226 Difference]: Without dead ends: 139786 [2024-11-13 16:13:21,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 911 GetRequests, 908 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:13:21,004 INFO L432 NwaCegarLoop]: 2945 mSDtfsCounter, 1447 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 4110 mSolverCounterSat, 1686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 5796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1686 IncrementalHoareTripleChecker+Valid, 4110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:13:21,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 3109 Invalid, 5796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1686 Valid, 4110 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-13 16:13:21,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139786 states. [2024-11-13 16:13:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139786 to 137002. [2024-11-13 16:13:22,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137002 states, 137001 states have (on average 1.1609696279589201) internal successors, (159054), 137001 states have internal predecessors, (159054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:13:22,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137002 states to 137002 states and 159054 transitions. [2024-11-13 16:13:22,628 INFO L78 Accepts]: Start accepts. Automaton has 137002 states and 159054 transitions. Word has length 907 [2024-11-13 16:13:22,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:13:22,629 INFO L471 AbstractCegarLoop]: Abstraction has 137002 states and 159054 transitions. [2024-11-13 16:13:22,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:13:22,629 INFO L276 IsEmpty]: Start isEmpty. Operand 137002 states and 159054 transitions. [2024-11-13 16:13:22,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2024-11-13 16:13:22,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:13:22,641 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:22,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 16:13:22,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:13:22,842 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:13:22,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:22,843 INFO L85 PathProgramCache]: Analyzing trace with hash -260081598, now seen corresponding path program 1 times [2024-11-13 16:13:22,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:22,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822083846] [2024-11-13 16:13:22,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:22,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:24,070 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 504 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-13 16:13:24,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:24,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822083846] [2024-11-13 16:13:24,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822083846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:24,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:24,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:13:24,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485983628] [2024-11-13 16:13:24,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:24,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:13:24,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:24,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:13:24,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:13:24,078 INFO L87 Difference]: Start difference. First operand 137002 states and 159054 transitions. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:13:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:13:32,080 INFO L93 Difference]: Finished difference Result 317688 states and 368114 transitions. [2024-11-13 16:13:32,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:32,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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 956 [2024-11-13 16:13:32,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:13:32,238 INFO L225 Difference]: With dead ends: 317688 [2024-11-13 16:13:32,238 INFO L226 Difference]: Without dead ends: 183418 [2024-11-13 16:13:32,295 INFO L431 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 [2024-11-13 16:13:32,299 INFO L432 NwaCegarLoop]: 2957 mSDtfsCounter, 1416 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 3694 mSolverCounterSat, 1421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 5115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1421 IncrementalHoareTripleChecker+Valid, 3694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:13:32,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 3129 Invalid, 5115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1421 Valid, 3694 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-13 16:13:32,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183418 states. [2024-11-13 16:13:34,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183418 to 172490. [2024-11-13 16:13:34,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172490 states, 172489 states have (on average 1.136391306112274) internal successors, (196015), 172489 states have internal predecessors, (196015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:13:34,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172490 states to 172490 states and 196015 transitions. [2024-11-13 16:13:34,828 INFO L78 Accepts]: Start accepts. Automaton has 172490 states and 196015 transitions. Word has length 956 [2024-11-13 16:13:34,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:13:34,829 INFO L471 AbstractCegarLoop]: Abstraction has 172490 states and 196015 transitions. [2024-11-13 16:13:34,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:13:34,829 INFO L276 IsEmpty]: Start isEmpty. Operand 172490 states and 196015 transitions. [2024-11-13 16:13:34,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 999 [2024-11-13 16:13:34,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:13:34,847 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:34,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 16:13:34,847 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:13:34,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:34,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1774152212, now seen corresponding path program 1 times [2024-11-13 16:13:34,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:34,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327149318] [2024-11-13 16:13:34,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:34,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:36,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2024-11-13 16:13:36,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:36,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327149318] [2024-11-13 16:13:36,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327149318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:36,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:13:36,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:13:36,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138816233] [2024-11-13 16:13:36,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:36,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:13:36,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:36,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:13:36,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:13:36,549 INFO L87 Difference]: Start difference. First operand 172490 states and 196015 transitions. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:13:43,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:13:43,957 INFO L93 Difference]: Finished difference Result 388662 states and 441808 transitions. [2024-11-13 16:13:43,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:43,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 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 998 [2024-11-13 16:13:43,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:13:44,374 INFO L225 Difference]: With dead ends: 388662 [2024-11-13 16:13:44,374 INFO L226 Difference]: Without dead ends: 205252 [2024-11-13 16:13:44,419 INFO L431 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 [2024-11-13 16:13:44,420 INFO L432 NwaCegarLoop]: 2920 mSDtfsCounter, 1349 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4339 mSolverCounterSat, 776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 5115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 4339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:13:44,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 3097 Invalid, 5115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 4339 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-13 16:13:44,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205252 states. [2024-11-13 16:13:46,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205252 to 205239. [2024-11-13 16:13:46,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205239 states, 205238 states have (on average 1.1167425135696118) internal successors, (229198), 205238 states have internal predecessors, (229198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:13:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205239 states to 205239 states and 229198 transitions. [2024-11-13 16:13:46,840 INFO L78 Accepts]: Start accepts. Automaton has 205239 states and 229198 transitions. Word has length 998 [2024-11-13 16:13:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:13:46,841 INFO L471 AbstractCegarLoop]: Abstraction has 205239 states and 229198 transitions. [2024-11-13 16:13:46,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:13:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 205239 states and 229198 transitions. [2024-11-13 16:13:46,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1034 [2024-11-13 16:13:46,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:13:46,862 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:46,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 16:13:46,863 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:13:46,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:46,867 INFO L85 PathProgramCache]: Analyzing trace with hash 761464718, now seen corresponding path program 1 times [2024-11-13 16:13:46,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:13:46,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234521369] [2024-11-13 16:13:46,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:46,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:13:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:50,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 719 proven. 366 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-13 16:13:50,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:13:50,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234521369] [2024-11-13 16:13:50,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234521369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:13:50,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827103237] [2024-11-13 16:13:50,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:50,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:13:50,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:13:50,121 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:13:50,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:13:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:50,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 16:13:50,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:13:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1224 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2024-11-13 16:13:51,230 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:13:51,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827103237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:13:51,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:13:51,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-13 16:13:51,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98671067] [2024-11-13 16:13:51,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:13:51,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:13:51,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:13:51,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:13:51,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:13:51,244 INFO L87 Difference]: Start difference. First operand 205239 states and 229198 transitions. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:13:59,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:13:59,303 INFO L93 Difference]: Finished difference Result 415937 states and 463979 transitions. [2024-11-13 16:13:59,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:13:59,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 1033 [2024-11-13 16:13:59,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:13:59,564 INFO L225 Difference]: With dead ends: 415937 [2024-11-13 16:13:59,565 INFO L226 Difference]: Without dead ends: 210699 [2024-11-13 16:13:59,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1037 GetRequests, 1034 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:13:59,638 INFO L432 NwaCegarLoop]: 2419 mSDtfsCounter, 1594 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 3740 mSolverCounterSat, 1650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 2500 SdHoareTripleChecker+Invalid, 5390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1650 IncrementalHoareTripleChecker+Valid, 3740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:13:59,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 2500 Invalid, 5390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1650 Valid, 3740 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-13 16:13:59,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210699 states. [2024-11-13 16:14:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210699 to 202505. [2024-11-13 16:14:02,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202505 states, 202504 states have (on average 1.1073559040809071) internal successors, (224244), 202504 states have internal predecessors, (224244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:14:03,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202505 states to 202505 states and 224244 transitions. [2024-11-13 16:14:03,201 INFO L78 Accepts]: Start accepts. Automaton has 202505 states and 224244 transitions. Word has length 1033 [2024-11-13 16:14:03,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:14:03,205 INFO L471 AbstractCegarLoop]: Abstraction has 202505 states and 224244 transitions. [2024-11-13 16:14:03,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:14:03,205 INFO L276 IsEmpty]: Start isEmpty. Operand 202505 states and 224244 transitions. [2024-11-13 16:14:03,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2024-11-13 16:14:03,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:14:03,463 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:14:03,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 16:14:03,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 16:14:03,667 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:14:03,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:14:03,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2124926871, now seen corresponding path program 1 times [2024-11-13 16:14:03,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:14:03,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42241286] [2024-11-13 16:14:03,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:14:03,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:14:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 931 proven. 66 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2024-11-13 16:14:06,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:14:06,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42241286] [2024-11-13 16:14:06,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42241286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:14:06,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714209392] [2024-11-13 16:14:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:14:06,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:14:06,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:14:06,123 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:14:06,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:14:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:06,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 16:14:06,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:14:06,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1394 backedges. 665 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-11-13 16:14:06,714 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:14:06,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714209392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:14:06,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:14:06,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-13 16:14:06,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714043402] [2024-11-13 16:14:06,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:14:06,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:14:06,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:14:06,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:14:06,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:14:06,718 INFO L87 Difference]: Start difference. First operand 202505 states and 224244 transitions. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:14:14,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:14:14,520 INFO L93 Difference]: Finished difference Result 399550 states and 442920 transitions. [2024-11-13 16:14:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:14:14,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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 1078 [2024-11-13 16:14:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:14:15,072 INFO L225 Difference]: With dead ends: 399550 [2024-11-13 16:14:15,072 INFO L226 Difference]: Without dead ends: 199777 [2024-11-13 16:14:15,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:14:15,139 INFO L432 NwaCegarLoop]: 2793 mSDtfsCounter, 1325 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4351 mSolverCounterSat, 862 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 5213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 862 IncrementalHoareTripleChecker+Valid, 4351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:14:15,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 2974 Invalid, 5213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [862 Valid, 4351 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-13 16:14:15,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199777 states. [2024-11-13 16:14:16,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199777 to 187487. [2024-11-13 16:14:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187487 states, 187486 states have (on average 1.085206362075035) internal successors, (203461), 187486 states have internal predecessors, (203461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:14:17,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187487 states to 187487 states and 203461 transitions. [2024-11-13 16:14:17,750 INFO L78 Accepts]: Start accepts. Automaton has 187487 states and 203461 transitions. Word has length 1078 [2024-11-13 16:14:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:14:17,750 INFO L471 AbstractCegarLoop]: Abstraction has 187487 states and 203461 transitions. [2024-11-13 16:14:17,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:14:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 187487 states and 203461 transitions. [2024-11-13 16:14:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2024-11-13 16:14:17,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:14:17,761 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:14:17,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 16:14:17,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 16:14:17,961 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:14:17,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:14:17,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1215478091, now seen corresponding path program 1 times [2024-11-13 16:14:17,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:14:17,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881742616] [2024-11-13 16:14:17,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:14:17,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:14:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 483 proven. 550 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-13 16:14:22,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:14:22,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881742616] [2024-11-13 16:14:22,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881742616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:14:22,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629593970] [2024-11-13 16:14:22,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:14:22,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:14:22,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:14:22,521 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:14:22,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:14:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:23,142 INFO L255 TraceCheckSpWp]: Trace formula consists of 1246 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:14:23,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:14:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 731 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-13 16:14:23,671 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:14:23,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629593970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:14:23,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 16:14:23,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-13 16:14:23,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949380852] [2024-11-13 16:14:23,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:14:23,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:14:23,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:14:23,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:14:23,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:14:23,676 INFO L87 Difference]: Start difference. First operand 187487 states and 203461 transitions. Second operand has 3 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:14:32,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:14:32,240 INFO L93 Difference]: Finished difference Result 424166 states and 463854 transitions. [2024-11-13 16:14:32,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:14:32,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 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 1091 [2024-11-13 16:14:32,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:14:32,733 INFO L225 Difference]: With dead ends: 424166 [2024-11-13 16:14:32,733 INFO L226 Difference]: Without dead ends: 236679 [2024-11-13 16:14:32,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 1092 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:14:32,777 INFO L432 NwaCegarLoop]: 1482 mSDtfsCounter, 1253 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 4720 mSolverCounterSat, 986 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 5706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 4720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:14:32,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 1638 Invalid, 5706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [986 Valid, 4720 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-13 16:14:32,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236679 states. [2024-11-13 16:14:35,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236679 to 235261. [2024-11-13 16:14:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235261 states, 235260 states have (on average 1.0787894244665477) internal successors, (253796), 235260 states have internal predecessors, (253796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:14:35,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235261 states to 235261 states and 253796 transitions. [2024-11-13 16:14:35,986 INFO L78 Accepts]: Start accepts. Automaton has 235261 states and 253796 transitions. Word has length 1091 [2024-11-13 16:14:35,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:14:35,987 INFO L471 AbstractCegarLoop]: Abstraction has 235261 states and 253796 transitions. [2024-11-13 16:14:35,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:14:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 235261 states and 253796 transitions. [2024-11-13 16:14:36,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2024-11-13 16:14:36,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:14:36,006 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:14:36,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 16:14:36,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00ad1a4-2e9d-4eda-b9ea-0d8f667a355d/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 16:14:36,207 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:14:36,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:14:36,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1538364773, now seen corresponding path program 1 times [2024-11-13 16:14:36,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:14:36,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000601644] [2024-11-13 16:14:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:14:36,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:14:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 1071 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-11-13 16:14:38,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:14:38,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000601644] [2024-11-13 16:14:38,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000601644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:14:38,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:14:38,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:14:38,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994621533] [2024-11-13 16:14:38,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:14:38,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:14:38,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:14:38,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:14:38,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:14:38,394 INFO L87 Difference]: Start difference. First operand 235261 states and 253796 transitions. Second operand has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:14:47,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:14:47,362 INFO L93 Difference]: Finished difference Result 469209 states and 506183 transitions. [2024-11-13 16:14:47,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:14:47,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 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 1157 [2024-11-13 16:14:47,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:14:47,606 INFO L225 Difference]: With dead ends: 469209 [2024-11-13 16:14:47,607 INFO L226 Difference]: Without dead ends: 236680 [2024-11-13 16:14:47,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:14:47,649 INFO L432 NwaCegarLoop]: 683 mSDtfsCounter, 1588 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 4174 mSolverCounterSat, 1338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 5512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1338 IncrementalHoareTripleChecker+Valid, 4174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:14:47,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 728 Invalid, 5512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1338 Valid, 4174 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2024-11-13 16:14:47,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236680 states. [2024-11-13 16:14:50,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236680 to 233892. [2024-11-13 16:14:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233892 states, 233891 states have (on average 1.0773736484088743) internal successors, (251988), 233891 states have internal predecessors, (251988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:14:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233892 states to 233892 states and 251988 transitions. [2024-11-13 16:14:51,272 INFO L78 Accepts]: Start accepts. Automaton has 233892 states and 251988 transitions. Word has length 1157 [2024-11-13 16:14:51,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:14:51,272 INFO L471 AbstractCegarLoop]: Abstraction has 233892 states and 251988 transitions. [2024-11-13 16:14:51,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:14:51,272 INFO L276 IsEmpty]: Start isEmpty. Operand 233892 states and 251988 transitions. [2024-11-13 16:14:51,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1293 [2024-11-13 16:14:51,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:14:51,295 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:14:51,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 16:14:51,296 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:14:51,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:14:51,296 INFO L85 PathProgramCache]: Analyzing trace with hash 964521741, now seen corresponding path program 1 times [2024-11-13 16:14:51,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:14:51,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056949750] [2024-11-13 16:14:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:14:51,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:14:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2375 backedges. 1628 proven. 0 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2024-11-13 16:14:52,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:14:52,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056949750] [2024-11-13 16:14:52,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056949750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:14:52,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:14:52,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:14:52,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210856591] [2024-11-13 16:14:52,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:14:52,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:14:52,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:14:52,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:14:52,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:14:52,573 INFO L87 Difference]: Start difference. First operand 233892 states and 251988 transitions. Second operand has 4 states, 4 states have (on average 204.25) internal successors, (817), 4 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:15:06,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:06,620 INFO L93 Difference]: Finished difference Result 615215 states and 668111 transitions. [2024-11-13 16:15:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:15:06,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 204.25) internal successors, (817), 4 states have internal predecessors, (817), 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 1292 [2024-11-13 16:15:06,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:07,494 INFO L225 Difference]: With dead ends: 615215 [2024-11-13 16:15:07,494 INFO L226 Difference]: Without dead ends: 384055 [2024-11-13 16:15:07,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:15:07,555 INFO L432 NwaCegarLoop]: 788 mSDtfsCounter, 3101 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 7617 mSolverCounterSat, 2593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3101 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 10210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2593 IncrementalHoareTripleChecker+Valid, 7617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:07,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3101 Valid, 993 Invalid, 10210 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2593 Valid, 7617 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2024-11-13 16:15:07,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384055 states. [2024-11-13 16:15:11,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384055 to 382681. [2024-11-13 16:15:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382681 states, 382680 states have (on average 1.0670690916692798) internal successors, (408346), 382680 states have internal predecessors, (408346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:15:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382681 states to 382681 states and 408346 transitions. [2024-11-13 16:15:13,406 INFO L78 Accepts]: Start accepts. Automaton has 382681 states and 408346 transitions. Word has length 1292 [2024-11-13 16:15:13,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:13,407 INFO L471 AbstractCegarLoop]: Abstraction has 382681 states and 408346 transitions. [2024-11-13 16:15:13,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 204.25) internal successors, (817), 4 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:15:13,407 INFO L276 IsEmpty]: Start isEmpty. Operand 382681 states and 408346 transitions. [2024-11-13 16:15:13,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1458 [2024-11-13 16:15:13,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:13,435 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:13,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 16:15:13,435 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:15:13,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:13,436 INFO L85 PathProgramCache]: Analyzing trace with hash 19955988, now seen corresponding path program 1 times [2024-11-13 16:15:13,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:15:13,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356514151] [2024-11-13 16:15:13,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:13,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:15:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat