./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array30_pattern.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_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/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_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array30_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/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_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/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 bf9fb5599b361d63a40d668c035ff2f49b2f61ec342dc99fdd2f9d975d29190c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:32:01,970 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:32:02,051 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:32:02,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:32:02,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:32:02,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:32:02,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:32:02,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:32:02,093 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:32:02,093 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:32:02,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:32:02,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:32:02,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:32:02,093 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:32:02,094 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:32:02,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:32:02,094 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:32:02,094 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:32:02,094 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:32:02,094 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:32:02,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:32:02,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:32:02,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:32:02,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:32:02,095 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:32:02,095 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:32:02,095 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:32:02,096 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:32:02,096 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:32:02,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:32:02,096 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:32:02,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:32:02,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:32:02,096 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:32:02,097 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:32:02,097 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:32:02,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:32:02,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:32:02,097 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:32:02,097 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:32:02,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:32:02,098 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:32:02,098 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_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/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 -> bf9fb5599b361d63a40d668c035ff2f49b2f61ec342dc99fdd2f9d975d29190c [2024-11-13 15:32:02,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:32:02,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:32:02,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:32:02,419 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:32:02,419 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:32:02,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-patterns/array30_pattern.c Unable to find full path for "g++" [2024-11-13 15:32:04,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:32:04,658 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:32:04,658 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/sv-benchmarks/c/array-patterns/array30_pattern.c [2024-11-13 15:32:04,666 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/data/65b8739e6/3ab51217dba44df484a4f6498814e7e3/FLAGe180bf853 [2024-11-13 15:32:04,681 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/data/65b8739e6/3ab51217dba44df484a4f6498814e7e3 [2024-11-13 15:32:04,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:32:04,684 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:32:04,686 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:32:04,686 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:32:04,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:32:04,691 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:32:04" (1/1) ... [2024-11-13 15:32:04,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba8f8d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04, skipping insertion in model container [2024-11-13 15:32:04,693 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:32:04" (1/1) ... [2024-11-13 15:32:04,707 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:32:04,857 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_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/sv-benchmarks/c/array-patterns/array30_pattern.c[1189,1202] [2024-11-13 15:32:04,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:32:04,886 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:32:04,894 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_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/sv-benchmarks/c/array-patterns/array30_pattern.c[1189,1202] [2024-11-13 15:32:04,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:32:04,916 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:32:04,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04 WrapperNode [2024-11-13 15:32:04,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:32:04,917 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:32:04,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:32:04,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:32:04,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04" (1/1) ... [2024-11-13 15:32:04,929 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04" (1/1) ... [2024-11-13 15:32:04,946 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2024-11-13 15:32:04,946 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:32:04,947 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:32:04,947 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:32:04,947 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:32:04,956 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04" (1/1) ... [2024-11-13 15:32:04,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04" (1/1) ... [2024-11-13 15:32:04,958 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04" (1/1) ... [2024-11-13 15:32:04,977 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 15:32:04,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04" (1/1) ... [2024-11-13 15:32:04,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04" (1/1) ... [2024-11-13 15:32:04,985 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04" (1/1) ... [2024-11-13 15:32:04,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04" (1/1) ... [2024-11-13 15:32:04,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04" (1/1) ... [2024-11-13 15:32:04,994 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04" (1/1) ... [2024-11-13 15:32:04,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:32:05,000 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:32:05,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:32:05,001 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:32:05,002 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04" (1/1) ... [2024-11-13 15:32:05,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:32:05,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:32:05,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:32:05,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:32:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:32:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:32:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:32:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:32:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:32:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:32:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:32:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:32:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:32:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:32:05,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:32:05,158 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:32:05,160 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:32:05,352 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-13 15:32:05,352 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:32:05,368 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:32:05,368 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 15:32:05,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:32:05 BoogieIcfgContainer [2024-11-13 15:32:05,369 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:32:05,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:32:05,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:32:05,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:32:05,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:32:04" (1/3) ... [2024-11-13 15:32:05,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1427125f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:32:05, skipping insertion in model container [2024-11-13 15:32:05,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:32:04" (2/3) ... [2024-11-13 15:32:05,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1427125f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:32:05, skipping insertion in model container [2024-11-13 15:32:05,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:32:05" (3/3) ... [2024-11-13 15:32:05,382 INFO L112 eAbstractionObserver]: Analyzing ICFG array30_pattern.c [2024-11-13 15:32:05,399 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:32:05,401 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG array30_pattern.c that has 1 procedures, 21 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-13 15:32:05,468 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:32:05,483 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;@5768f62f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:32:05,485 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:32:05,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 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 15:32:05,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 15:32:05,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:05,499 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:05,499 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:32:05,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:05,505 INFO L85 PathProgramCache]: Analyzing trace with hash -468894755, now seen corresponding path program 1 times [2024-11-13 15:32:05,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:05,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742059835] [2024-11-13 15:32:05,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:05,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:05,656 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 15:32:05,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:05,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742059835] [2024-11-13 15:32:05,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742059835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:32:05,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:32:05,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:32:05,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423164151] [2024-11-13 15:32:05,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:32:05,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 15:32:05,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 15:32:05,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 15:32:05,690 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 15:32:05,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:05,702 INFO L93 Difference]: Finished difference Result 39 states and 58 transitions. [2024-11-13 15:32:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 15:32:05,704 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2024-11-13 15:32:05,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:05,710 INFO L225 Difference]: With dead ends: 39 [2024-11-13 15:32:05,710 INFO L226 Difference]: Without dead ends: 17 [2024-11-13 15:32:05,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 15:32:05,715 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:05,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:32:05,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-13 15:32:05,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-13 15:32:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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 15:32:05,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-11-13 15:32:05,745 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2024-11-13 15:32:05,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:05,745 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-11-13 15:32:05,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 15:32:05,745 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-11-13 15:32:05,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 15:32:05,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:05,746 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:05,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:32:05,746 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:32:05,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:05,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1936711854, now seen corresponding path program 1 times [2024-11-13 15:32:05,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:05,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572985803] [2024-11-13 15:32:05,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:05,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:06,007 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 15:32:06,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:06,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572985803] [2024-11-13 15:32:06,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572985803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:32:06,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:32:06,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:32:06,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970984623] [2024-11-13 15:32:06,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:32:06,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:32:06,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:06,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:32:06,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:32:06,010 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 15:32:06,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:06,108 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2024-11-13 15:32:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:32:06,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2024-11-13 15:32:06,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:06,109 INFO L225 Difference]: With dead ends: 33 [2024-11-13 15:32:06,109 INFO L226 Difference]: Without dead ends: 25 [2024-11-13 15:32:06,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:32:06,111 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:06,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 11 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:32:06,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-13 15:32:06,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2024-11-13 15:32:06,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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 15:32:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-13 15:32:06,122 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2024-11-13 15:32:06,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:06,123 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-13 15:32:06,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 15:32:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-13 15:32:06,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 15:32:06,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:06,124 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:32:06,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:32:06,125 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:32:06,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:06,127 INFO L85 PathProgramCache]: Analyzing trace with hash 127801592, now seen corresponding path program 1 times [2024-11-13 15:32:06,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:06,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634845302] [2024-11-13 15:32:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:06,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:06,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:32:06,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:06,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634845302] [2024-11-13 15:32:06,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634845302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:32:06,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:32:06,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:32:06,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465325261] [2024-11-13 15:32:06,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:32:06,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:32:06,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:06,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:32:06,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:32:06,335 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 15:32:06,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:06,425 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2024-11-13 15:32:06,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:32:06,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2024-11-13 15:32:06,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:06,431 INFO L225 Difference]: With dead ends: 43 [2024-11-13 15:32:06,431 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 15:32:06,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 15:32:06,433 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 16 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:06,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 25 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:32:06,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 15:32:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2024-11-13 15:32:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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 15:32:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-13 15:32:06,443 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 16 [2024-11-13 15:32:06,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:06,443 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-13 15:32:06,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 15:32:06,444 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-13 15:32:06,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 15:32:06,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:06,446 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] [2024-11-13 15:32:06,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:32:06,447 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:32:06,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:06,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1411375943, now seen corresponding path program 1 times [2024-11-13 15:32:06,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:06,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789303696] [2024-11-13 15:32:06,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:06,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:32:06,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:32:06,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789303696] [2024-11-13 15:32:06,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789303696] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:32:06,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:32:06,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:32:06,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674375813] [2024-11-13 15:32:06,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:32:06,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:32:06,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:32:06,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:32:06,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:32:06,944 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 15:32:07,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:07,007 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2024-11-13 15:32:07,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:32:07,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2024-11-13 15:32:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:07,008 INFO L225 Difference]: With dead ends: 44 [2024-11-13 15:32:07,008 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 15:32:07,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:32:07,009 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:07,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 24 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:32:07,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 15:32:07,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2024-11-13 15:32:07,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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 15:32:07,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-13 15:32:07,015 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 20 [2024-11-13 15:32:07,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:07,015 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-13 15:32:07,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 15:32:07,015 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-13 15:32:07,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 15:32:07,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:07,016 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] [2024-11-13 15:32:07,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:32:07,016 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:32:07,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1872474103, now seen corresponding path program 1 times [2024-11-13 15:32:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:32:07,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597040176] [2024-11-13 15:32:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:07,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:32:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:32:07,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121188688] [2024-11-13 15:32:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:07,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:32:07,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:32:07,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:32:07,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:32:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:07,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 15:32:07,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:32:07,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:32:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:32:07,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:32:15,795 WARN L873 $PredicateComparison]: unable to prove that (= (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0) (+ (* |c_ULTIMATE.start_main_~sum~0#1| 3) c_~ARR_SIZE~0 (* (select (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ (* |c_ULTIMATE.start_main_~row~0#1| (* c_~ARR_SIZE~0 4)) |c_ULTIMATE.start_main_~#array~0#1.offset| (* |c_ULTIMATE.start_main_~column~0#1| 4))) 3))) is different from true [2024-11-13 15:32:23,851 WARN L873 $PredicateComparison]: unable to prove that (= (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0) (+ (* (select (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ (* |c_ULTIMATE.start_main_~row~0#1| (* c_~ARR_SIZE~0 4)) |c_ULTIMATE.start_main_~#array~0#1.offset|)) 3) (* |c_ULTIMATE.start_main_~sum~0#1| 3) c_~ARR_SIZE~0)) is different from true [2024-11-13 15:32:24,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2024-11-13 15:32:24,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 44 [2024-11-13 15:32:56,448 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 15:33:08,513 WARN L286 SmtUtils]: Spent 12.04s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 15:33:24,661 WARN L286 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-13 15:33:32,696 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 15:34:00,904 WARN L286 SmtUtils]: Spent 24.12s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-13 15:34:08,953 WARN L286 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 15:34:21,019 WARN L286 SmtUtils]: Spent 12.05s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 15:35:02,159 WARN L286 SmtUtils]: Spent 20.41s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:35:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-13 15:35:06,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:35:06,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597040176] [2024-11-13 15:35:06,568 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:35:06,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121188688] [2024-11-13 15:35:06,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121188688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:35:06,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:35:06,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2024-11-13 15:35:06,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454419656] [2024-11-13 15:35:06,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:35:06,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 15:35:06,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:35:06,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 15:35:06,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=260, Unknown=9, NotChecked=70, Total=420 [2024-11-13 15:35:06,571 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 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 15:35:21,797 WARN L286 SmtUtils]: Spent 8.85s on a formula simplification. DAG size of input: 59 DAG size of output: 72 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:35:25,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-13 15:35:29,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-13 15:35:33,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-13 15:35:42,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:36:02,991 WARN L286 SmtUtils]: Spent 20.37s on a formula simplification. DAG size of input: 69 DAG size of output: 82 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:36:08,924 WARN L286 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 75 DAG size of output: 86 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:36:13,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:36:21,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:21,860 INFO L93 Difference]: Finished difference Result 99 states and 138 transitions. [2024-11-13 15:36:21,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 15:36:21,861 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 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 20 [2024-11-13 15:36:21,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:21,863 INFO L225 Difference]: With dead ends: 99 [2024-11-13 15:36:21,863 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 15:36:21,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 119.4s TimeCoverageRelationStatistics Valid=333, Invalid=1225, Unknown=10, NotChecked=154, Total=1722 [2024-11-13 15:36:21,869 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 156 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 24 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 264 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:21,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 82 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 317 Invalid, 5 Unknown, 264 Unchecked, 21.1s Time] [2024-11-13 15:36:21,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 15:36:21,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 54. [2024-11-13 15:36:21,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 53 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:36:21,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 75 transitions. [2024-11-13 15:36:21,889 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 75 transitions. Word has length 20 [2024-11-13 15:36:21,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:21,890 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 75 transitions. [2024-11-13 15:36:21,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 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 15:36:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 75 transitions. [2024-11-13 15:36:21,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 15:36:21,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:21,891 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:21,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:36:22,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:22,096 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:22,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash -467222315, now seen corresponding path program 2 times [2024-11-13 15:36:22,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:22,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938694193] [2024-11-13 15:36:22,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:22,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:36:22,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:22,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938694193] [2024-11-13 15:36:22,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938694193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:36:22,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974365838] [2024-11-13 15:36:22,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:36:22,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:22,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:22,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:36:22,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:36:22,358 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:36:22,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:36:22,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:36:22,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:36:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:36:22,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:36:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:36:22,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974365838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:36:22,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:36:22,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-13 15:36:22,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841204212] [2024-11-13 15:36:22,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:36:22,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 15:36:22,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:22,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 15:36:22,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:36:22,710 INFO L87 Difference]: Start difference. First operand 54 states and 75 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 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 15:36:23,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:23,868 INFO L93 Difference]: Finished difference Result 135 states and 196 transitions. [2024-11-13 15:36:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:36:23,869 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 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 21 [2024-11-13 15:36:23,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:23,869 INFO L225 Difference]: With dead ends: 135 [2024-11-13 15:36:23,869 INFO L226 Difference]: Without dead ends: 103 [2024-11-13 15:36:23,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2024-11-13 15:36:23,874 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 156 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:23,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 93 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:36:23,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-13 15:36:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2024-11-13 15:36:23,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3888888888888888) internal successors, (125), 90 states have internal predecessors, (125), 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 15:36:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2024-11-13 15:36:23,910 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 21 [2024-11-13 15:36:23,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:23,910 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2024-11-13 15:36:23,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 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 15:36:23,911 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2024-11-13 15:36:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 15:36:23,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:23,912 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:23,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:36:24,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 15:36:24,112 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:24,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash -339908027, now seen corresponding path program 3 times [2024-11-13 15:36:24,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:24,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564481513] [2024-11-13 15:36:24,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:24,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:24,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:36:24,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:24,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564481513] [2024-11-13 15:36:24,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564481513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:36:24,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773617788] [2024-11-13 15:36:24,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:36:24,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:24,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:24,284 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:36:24,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:36:24,369 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 15:36:24,369 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:36:24,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:36:24,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:36:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:36:24,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:36:24,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:36:24,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773617788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:36:24,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:36:24,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-13 15:36:24,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507930387] [2024-11-13 15:36:24,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:36:24,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 15:36:24,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:24,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:36:24,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:36:24,670 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 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 15:36:25,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:25,354 INFO L93 Difference]: Finished difference Result 118 states and 157 transitions. [2024-11-13 15:36:25,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 15:36:25,355 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 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 24 [2024-11-13 15:36:25,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:25,356 INFO L225 Difference]: With dead ends: 118 [2024-11-13 15:36:25,356 INFO L226 Difference]: Without dead ends: 101 [2024-11-13 15:36:25,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:36:25,358 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 66 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:25,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 69 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:36:25,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-13 15:36:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2024-11-13 15:36:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.372093023255814) internal successors, (118), 86 states have internal predecessors, (118), 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 15:36:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 118 transitions. [2024-11-13 15:36:25,388 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 118 transitions. Word has length 24 [2024-11-13 15:36:25,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:25,388 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 118 transitions. [2024-11-13 15:36:25,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 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 15:36:25,389 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 118 transitions. [2024-11-13 15:36:25,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 15:36:25,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:25,390 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:25,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 15:36:25,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 15:36:25,591 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:25,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:25,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1802855600, now seen corresponding path program 1 times [2024-11-13 15:36:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:25,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023788429] [2024-11-13 15:36:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:25,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:36:25,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:25,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023788429] [2024-11-13 15:36:25,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023788429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:36:25,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658161227] [2024-11-13 15:36:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:25,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:25,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:25,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:36:25,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:36:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:25,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:36:25,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:36:25,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:36:25,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:36:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:36:26,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658161227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:36:26,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:36:26,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-13 15:36:26,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122804105] [2024-11-13 15:36:26,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:36:26,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 15:36:26,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:26,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 15:36:26,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:36:26,113 INFO L87 Difference]: Start difference. First operand 87 states and 118 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 15:36:26,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:26,449 INFO L93 Difference]: Finished difference Result 108 states and 142 transitions. [2024-11-13 15:36:26,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:36:26,450 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 26 [2024-11-13 15:36:26,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:26,450 INFO L225 Difference]: With dead ends: 108 [2024-11-13 15:36:26,450 INFO L226 Difference]: Without dead ends: 74 [2024-11-13 15:36:26,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:36:26,452 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:26,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 64 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:36:26,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-13 15:36:26,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2024-11-13 15:36:26,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.328125) internal successors, (85), 64 states have internal predecessors, (85), 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 15:36:26,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 85 transitions. [2024-11-13 15:36:26,470 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 85 transitions. Word has length 26 [2024-11-13 15:36:26,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:26,470 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 85 transitions. [2024-11-13 15:36:26,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 15:36:26,470 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 85 transitions. [2024-11-13 15:36:26,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 15:36:26,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:26,471 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:26,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:36:26,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:26,672 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:26,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:26,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1710621918, now seen corresponding path program 2 times [2024-11-13 15:36:26,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:26,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192788565] [2024-11-13 15:36:26,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:26,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 15:36:26,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:26,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192788565] [2024-11-13 15:36:26,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192788565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:36:26,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346101170] [2024-11-13 15:36:26,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:36:26,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:26,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:26,920 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:36:26,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:36:27,014 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:36:27,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:36:27,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:36:27,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:36:27,158 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 15:36:27,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:36:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 15:36:27,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346101170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:36:27,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:36:27,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 15:36:27,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565764881] [2024-11-13 15:36:27,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:36:27,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:36:27,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:36:27,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:36:27,293 INFO L87 Difference]: Start difference. First operand 65 states and 85 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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 15:36:27,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:27,565 INFO L93 Difference]: Finished difference Result 71 states and 91 transitions. [2024-11-13 15:36:27,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:36:27,566 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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 32 [2024-11-13 15:36:27,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:27,567 INFO L225 Difference]: With dead ends: 71 [2024-11-13 15:36:27,567 INFO L226 Difference]: Without dead ends: 59 [2024-11-13 15:36:27,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:36:27,568 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 28 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:27,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 70 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:36:27,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-13 15:36:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2024-11-13 15:36:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 56 states have internal predecessors, (72), 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 15:36:27,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2024-11-13 15:36:27,584 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 32 [2024-11-13 15:36:27,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:27,584 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2024-11-13 15:36:27,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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 15:36:27,584 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2024-11-13 15:36:27,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 15:36:27,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:27,585 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:27,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:36:27,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:27,787 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:27,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:27,787 INFO L85 PathProgramCache]: Analyzing trace with hash -252058160, now seen corresponding path program 3 times [2024-11-13 15:36:27,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:27,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660146191] [2024-11-13 15:36:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:27,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-13 15:36:28,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:28,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660146191] [2024-11-13 15:36:28,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660146191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:36:28,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769889916] [2024-11-13 15:36:28,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:36:28,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:28,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:28,687 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:36:28,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:36:29,465 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-13 15:36:29,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:36:29,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 15:36:29,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:36:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-13 15:36:29,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:36:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:36:31,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769889916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:36:31,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:36:31,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 19] total 29 [2024-11-13 15:36:31,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352964583] [2024-11-13 15:36:31,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:36:31,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 15:36:31,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:31,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 15:36:31,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:36:31,019 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 states have internal predecessors, (61), 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 15:36:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:40,702 INFO L93 Difference]: Finished difference Result 362 states and 521 transitions. [2024-11-13 15:36:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-13 15:36:40,705 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 states have internal predecessors, (61), 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 38 [2024-11-13 15:36:40,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:40,706 INFO L225 Difference]: With dead ends: 362 [2024-11-13 15:36:40,706 INFO L226 Difference]: Without dead ends: 314 [2024-11-13 15:36:40,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6912 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2737, Invalid=16723, Unknown=0, NotChecked=0, Total=19460 [2024-11-13 15:36:40,716 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 182 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:40,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 184 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 15:36:40,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-13 15:36:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 251. [2024-11-13 15:36:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.42) internal successors, (355), 250 states have internal predecessors, (355), 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 15:36:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 355 transitions. [2024-11-13 15:36:40,788 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 355 transitions. Word has length 38 [2024-11-13 15:36:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:40,789 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 355 transitions. [2024-11-13 15:36:40,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.103448275862069) internal successors, (61), 29 states have internal predecessors, (61), 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 15:36:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 355 transitions. [2024-11-13 15:36:40,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 15:36:40,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:40,790 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:40,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:36:40,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 15:36:40,991 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:40,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:40,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1134145234, now seen corresponding path program 4 times [2024-11-13 15:36:40,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:40,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575554322] [2024-11-13 15:36:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:40,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-13 15:36:42,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:36:42,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575554322] [2024-11-13 15:36:42,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575554322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:36:42,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677119124] [2024-11-13 15:36:42,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:36:42,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:42,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:42,051 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:36:42,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:36:42,143 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:36:42,143 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:36:42,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 15:36:42,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:36:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 15:36:42,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:36:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 15:36:42,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677119124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:36:42,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:36:42,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 22 [2024-11-13 15:36:42,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612002406] [2024-11-13 15:36:42,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:36:42,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 15:36:42,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:36:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 15:36:42,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:36:42,837 INFO L87 Difference]: Start difference. First operand 251 states and 355 transitions. Second operand has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 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 15:36:44,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:44,132 INFO L93 Difference]: Finished difference Result 411 states and 583 transitions. [2024-11-13 15:36:44,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:36:44,132 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 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 38 [2024-11-13 15:36:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:44,134 INFO L225 Difference]: With dead ends: 411 [2024-11-13 15:36:44,135 INFO L226 Difference]: Without dead ends: 236 [2024-11-13 15:36:44,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=277, Invalid=1205, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 15:36:44,136 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 103 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:44,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 98 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:36:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-13 15:36:44,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 220. [2024-11-13 15:36:44,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.3881278538812785) internal successors, (304), 219 states have internal predecessors, (304), 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 15:36:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 304 transitions. [2024-11-13 15:36:44,206 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 304 transitions. Word has length 38 [2024-11-13 15:36:44,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:44,207 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 304 transitions. [2024-11-13 15:36:44,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 22 states have internal predecessors, (59), 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 15:36:44,207 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 304 transitions. [2024-11-13 15:36:44,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 15:36:44,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:44,209 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:36:44,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 15:36:44,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 15:36:44,410 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:36:44,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:44,410 INFO L85 PathProgramCache]: Analyzing trace with hash 316496784, now seen corresponding path program 5 times [2024-11-13 15:36:44,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:36:44,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825991339] [2024-11-13 15:36:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:44,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:36:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 15:36:44,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734359309] [2024-11-13 15:36:44,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:36:44,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:44,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:44,446 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:36:44,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba55b6f6-3771-4d92-bafd-ce4c4941f0f8/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:36:45,043 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-13 15:36:45,043 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:36:45,045 WARN L253 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-13 15:36:45,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:36:45,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:36:45,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 15:36:45,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:36:45,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-13 15:36:46,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:36:46,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-13 15:36:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:36:47,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:36:51,552 WARN L873 $PredicateComparison]: unable to prove that (= (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0) (+ (* |c_ULTIMATE.start_main_~sum~0#1| 3) c_~ARR_SIZE~0 (* (select (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ (* |c_ULTIMATE.start_main_~row~0#1| (* c_~ARR_SIZE~0 4)) |c_ULTIMATE.start_main_~#array~0#1.offset| (* |c_ULTIMATE.start_main_~column~0#1| 4))) 3))) is different from true [2024-11-13 15:36:59,589 WARN L873 $PredicateComparison]: unable to prove that (= (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0) (let ((.cse0 (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#array~0#1.base|)) (.cse1 (* |c_ULTIMATE.start_main_~row~0#1| (* c_~ARR_SIZE~0 4))) (.cse2 (* |c_ULTIMATE.start_main_~column~0#1| 4))) (+ (* |c_ULTIMATE.start_main_~sum~0#1| 3) c_~ARR_SIZE~0 (* (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset| 4 .cse2)) 3) (* (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse2)) 3)))) is different from true [2024-11-13 15:37:23,764 WARN L873 $PredicateComparison]: unable to prove that (= (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0) (let ((.cse0 (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#array~0#1.base|)) (.cse1 (* (+ |c_ULTIMATE.start_main_~row~0#1| 1) (* c_~ARR_SIZE~0 4)))) (+ (* |c_ULTIMATE.start_main_~sum~0#1| 3) c_~ARR_SIZE~0 (* (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset|)) 3) (* 3 (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)))))) is different from true [2024-11-13 15:37:44,025 WARN L286 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 15:38:08,275 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 15:38:12,290 WARN L873 $PredicateComparison]: unable to prove that (or (= (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0) (let ((.cse3 (* c_~ARR_SIZE~0 4))) (let ((.cse1 (* |c_ULTIMATE.start_main_~row~0#1| .cse3)) (.cse0 (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#array~0#1.base|)) (.cse2 (* (+ |c_ULTIMATE.start_main_~row~0#1| 1) .cse3))) (+ (* 3 (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset| 4))) (* (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset|)) 3) (* |c_ULTIMATE.start_main_~sum~0#1| 3) c_~ARR_SIZE~0 (* (select .cse0 (+ .cse2 |c_ULTIMATE.start_main_~#array~0#1.offset|)) 3) (* 3 (select .cse0 (+ .cse2 |c_ULTIMATE.start_main_~#array~0#1.offset| 4))))))) (< c_~ARR_SIZE~0 2)) is different from true [2024-11-13 15:38:24,620 WARN L873 $PredicateComparison]: unable to prove that (or (= (let ((.cse1 (* c_~ARR_SIZE~0 4))) (let ((.cse0 (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ (* |c_ULTIMATE.start_main_~row~0#1| .cse1) |c_ULTIMATE.start_main_~#array~0#1.offset| (* |c_ULTIMATE.start_main_~column~0#1| 4)) |c_ULTIMATE.start_diff_#res#1|))) (+ (* |c_ULTIMATE.start_main_~sum~0#1| 3) (* (select .cse0 |c_ULTIMATE.start_main_~#array~0#1.offset|) 3) c_~ARR_SIZE~0 (* 3 (select .cse0 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4))) (* (select .cse0 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse1)) 3) (* 3 (select .cse0 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse1 4)))))) (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0)) (< c_~ARR_SIZE~0 2)) is different from true [2024-11-13 15:38:32,658 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 15:38:36,707 WARN L873 $PredicateComparison]: unable to prove that (or (= (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0) (let ((.cse1 (* c_~ARR_SIZE~0 4))) (let ((.cse0 (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ (* |c_ULTIMATE.start_main_~row~0#1| .cse1) |c_ULTIMATE.start_main_~#array~0#1.offset| (* |c_ULTIMATE.start_main_~column~0#1| 4)) (+ (* (- 1) |c_ULTIMATE.start_diff_~idx1#1|) |c_ULTIMATE.start_diff_~idx2#1|)))) (+ (* 3 (select .cse0 |c_ULTIMATE.start_main_~#array~0#1.offset|)) (* 3 (select .cse0 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse1 4))) (* 3 (select .cse0 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse1))) (* |c_ULTIMATE.start_main_~sum~0#1| 3) c_~ARR_SIZE~0 (* (select .cse0 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) 3))))) (< c_~ARR_SIZE~0 2) (< |c_ULTIMATE.start_diff_~idx2#1| |c_ULTIMATE.start_diff_~idx1#1|)) is different from true [2024-11-13 15:39:06,975 WARN L286 SmtUtils]: Spent 20.46s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:39:25,087 WARN L286 SmtUtils]: Spent 5.25s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 15:39:29,122 WARN L873 $PredicateComparison]: unable to prove that (or (< c_~ARR_SIZE~0 (+ 2 |c_ULTIMATE.start_main_~column~0#1|)) (let ((.cse17 (* c_~ARR_SIZE~0 4))) (let ((.cse13 (mod |c_ULTIMATE.start_main_~row~0#1| 65536)) (.cse15 (* |c_ULTIMATE.start_main_~row~0#1| .cse17)) (.cse16 (* |c_ULTIMATE.start_main_~column~0#1| 4))) (let ((.cse2 (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0)) (.cse4 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse17 4)) (.cse5 (* |c_ULTIMATE.start_main_~sum~0#1| 3)) (.cse7 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse17)) (.cse6 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) (.cse8 (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ .cse15 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse16) (+ (* (- 1) |c_ULTIMATE.start_diff_~idx2#1|) |c_ULTIMATE.start_diff_~idx1#1|))) (.cse9 (+ .cse15 |c_ULTIMATE.start_main_~#array~0#1.offset| 4 .cse16)) (.cse10 (mod (+ |c_ULTIMATE.start_main_~column~0#1| 1) 65536)) (.cse11 (* (- 1) .cse13))) (let ((.cse0 (= .cse2 (let ((.cse14 (store .cse8 .cse9 (+ .cse10 .cse11)))) (+ (* 3 (select .cse14 .cse4)) .cse5 c_~ARR_SIZE~0 (* 3 (select .cse14 .cse7)) (* 3 (select .cse14 |c_ULTIMATE.start_main_~#array~0#1.offset|)) (* 3 (select .cse14 .cse6)))))) (.cse1 (< .cse10 .cse13)) (.cse12 (< .cse13 32768))) (and (or (and (or .cse0 .cse1) (or (= .cse2 (let ((.cse3 (store .cse8 .cse9 (+ .cse10 .cse11 65536)))) (+ (* 3 (select .cse3 .cse4)) (* 3 (select .cse3 |c_ULTIMATE.start_main_~#array~0#1.offset|)) .cse5 c_~ARR_SIZE~0 (* 3 (select .cse3 .cse6)) (* (select .cse3 .cse7) 3)))) .cse12)) (< 32767 .cse10)) (or .cse0 .cse1 .cse12)))))) (< |c_ULTIMATE.start_diff_~idx1#1| (+ |c_ULTIMATE.start_diff_~idx2#1| 1)) (< c_~ARR_SIZE~0 2)) is different from true [2024-11-13 15:39:50,853 WARN L286 SmtUtils]: Spent 9.61s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:40:44,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 281 treesize of output 273 [2024-11-13 15:40:44,865 INFO L349 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2024-11-13 15:40:44,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2568723558 treesize of output 2489031782 [2024-11-13 15:41:00,214 WARN L286 SmtUtils]: Spent 15.28s on a formula simplification. DAG size of input: 9049 DAG size of output: 782 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 15:41:02,268 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-13 15:41:02,395 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-13 15:41:02,501 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-13 15:41:02,662 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-13 15:41:02,882 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-13 15:41:02,906 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-13 15:41:02,959 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-13 15:41:03,380 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-13 15:41:03,423 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-13 15:41:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 26 refuted. 1 times theorem prover too weak. 0 trivial. 23 not checked. [2024-11-13 15:41:26,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:41:26,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825991339] [2024-11-13 15:41:26,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 15:41:26,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734359309] [2024-11-13 15:41:26,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734359309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:41:26,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:41:26,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28] total 56 [2024-11-13 15:41:26,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102235238] [2024-11-13 15:41:26,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:41:26,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 15:41:26,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:41:26,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 15:41:26,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1958, Unknown=27, NotChecked=700, Total=3080 [2024-11-13 15:41:26,190 INFO L87 Difference]: Start difference. First operand 220 states and 304 transitions. Second operand has 56 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 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 15:42:50,809 WARN L286 SmtUtils]: Spent 1.39m on a formula simplification. DAG size of input: 280 DAG size of output: 232 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:42:54,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:43:00,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:43:04,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:43:06,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:43:10,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:43:14,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:43:27,673 WARN L286 SmtUtils]: Spent 10.02s on a formula simplification. DAG size of input: 145 DAG size of output: 133 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:43:49,259 WARN L286 SmtUtils]: Spent 21.19s on a formula simplification. DAG size of input: 132 DAG size of output: 120 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:43:53,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:44:03,181 WARN L286 SmtUtils]: Spent 9.51s on a formula simplification. DAG size of input: 125 DAG size of output: 116 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:44:08,979 WARN L286 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 98 DAG size of output: 86 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:45:06,677 WARN L286 SmtUtils]: Spent 14.44s on a formula simplification. DAG size of input: 131 DAG size of output: 119 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:45:46,670 WARN L286 SmtUtils]: Spent 38.30s on a formula simplification. DAG size of input: 169 DAG size of output: 151 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:45:51,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:45:55,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:46:08,564 WARN L286 SmtUtils]: Spent 12.26s on a formula simplification. DAG size of input: 163 DAG size of output: 130 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:46:40,051 WARN L286 SmtUtils]: Spent 26.06s on a formula simplification. DAG size of input: 178 DAG size of output: 168 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:47:01,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:47:03,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:47:15,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []