./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/zero_sum_m5.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_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/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_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/zero_sum_m5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/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_4041d393-ce71-44e0-9376-0c2a7c9e3a77/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 afdb8b285c2183da613babde617c7580c3aee6b3bc694b080468400e828cda16 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:37:34,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:37:35,025 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:37:35,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:37:35,032 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:37:35,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:37:35,062 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:37:35,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:37:35,063 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:37:35,063 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:37:35,064 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:37:35,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:37:35,064 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:37:35,064 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:37:35,065 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:37:35,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:37:35,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:37:35,065 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:37:35,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:37:35,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:37:35,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:37:35,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:37:35,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:37:35,066 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:37:35,067 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:37:35,067 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:37:35,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:37:35,067 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:37:35,068 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:37:35,068 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:37:35,068 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:37:35,068 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:37:35,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:37:35,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:37:35,069 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:37:35,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:37:35,069 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:37:35,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:37:35,069 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:37:35,069 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:37:35,069 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:37:35,069 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:37:35,069 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_4041d393-ce71-44e0-9376-0c2a7c9e3a77/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 -> afdb8b285c2183da613babde617c7580c3aee6b3bc694b080468400e828cda16 [2024-11-13 15:37:35,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:37:35,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:37:35,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:37:35,509 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:37:35,510 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:37:35,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-crafted/zero_sum_m5.c Unable to find full path for "g++" [2024-11-13 15:37:37,803 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:37:38,135 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:37:38,137 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/sv-benchmarks/c/array-crafted/zero_sum_m5.c [2024-11-13 15:37:38,153 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/data/7bba50d23/e48be01051e44db495911ad3e4dae9af/FLAG2b67a75e3 [2024-11-13 15:37:38,183 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/data/7bba50d23/e48be01051e44db495911ad3e4dae9af [2024-11-13 15:37:38,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:37:38,190 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:37:38,192 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:37:38,192 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:37:38,198 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:37:38,199 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:37:38" (1/1) ... [2024-11-13 15:37:38,200 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ce1019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38, skipping insertion in model container [2024-11-13 15:37:38,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:37:38" (1/1) ... [2024-11-13 15:37:38,226 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:37:38,454 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_4041d393-ce71-44e0-9376-0c2a7c9e3a77/sv-benchmarks/c/array-crafted/zero_sum_m5.c[402,415] [2024-11-13 15:37:38,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:37:38,516 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:37:38,532 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_4041d393-ce71-44e0-9376-0c2a7c9e3a77/sv-benchmarks/c/array-crafted/zero_sum_m5.c[402,415] [2024-11-13 15:37:38,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:37:38,589 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:37:38,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38 WrapperNode [2024-11-13 15:37:38,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:37:38,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:37:38,593 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:37:38,594 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:37:38,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38" (1/1) ... [2024-11-13 15:37:38,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38" (1/1) ... [2024-11-13 15:37:38,661 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 141 [2024-11-13 15:37:38,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:37:38,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:37:38,663 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:37:38,663 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:37:38,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38" (1/1) ... [2024-11-13 15:37:38,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38" (1/1) ... [2024-11-13 15:37:38,675 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38" (1/1) ... [2024-11-13 15:37:38,691 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 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 15:37:38,692 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38" (1/1) ... [2024-11-13 15:37:38,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38" (1/1) ... [2024-11-13 15:37:38,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38" (1/1) ... [2024-11-13 15:37:38,704 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38" (1/1) ... [2024-11-13 15:37:38,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38" (1/1) ... [2024-11-13 15:37:38,709 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38" (1/1) ... [2024-11-13 15:37:38,712 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:37:38,713 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:37:38,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:37:38,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:37:38,714 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38" (1/1) ... [2024-11-13 15:37:38,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:37:38,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:37:38,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:37:38,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:37:38,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:37:38,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:37:38,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:37:38,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:37:38,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:37:38,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:37:38,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:37:38,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:37:38,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:37:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:37:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:37:38,908 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:37:38,910 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:37:39,299 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-13 15:37:39,299 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:37:39,319 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:37:39,319 INFO L316 CfgBuilder]: Removed 11 assume(true) statements. [2024-11-13 15:37:39,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:37:39 BoogieIcfgContainer [2024-11-13 15:37:39,320 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:37:39,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:37:39,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:37:39,331 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:37:39,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:37:38" (1/3) ... [2024-11-13 15:37:39,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7406b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:37:39, skipping insertion in model container [2024-11-13 15:37:39,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:37:38" (2/3) ... [2024-11-13 15:37:39,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7406b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:37:39, skipping insertion in model container [2024-11-13 15:37:39,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:37:39" (3/3) ... [2024-11-13 15:37:39,335 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_m5.c [2024-11-13 15:37:39,358 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:37:39,362 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG zero_sum_m5.c that has 1 procedures, 33 locations, 1 initial locations, 11 loop locations, and 1 error locations. [2024-11-13 15:37:39,451 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:37:39,472 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;@1f5a097a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:37:39,472 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:37:39,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 32 states have internal predecessors, (56), 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 15:37:39,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 15:37:39,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:37:39,489 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:39,489 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:37:39,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:39,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1165822974, now seen corresponding path program 1 times [2024-11-13 15:37:39,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:39,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383397606] [2024-11-13 15:37:39,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:39,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:39,914 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 15:37:39,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:39,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383397606] [2024-11-13 15:37:39,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383397606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:37:39,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:37:39,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:37:39,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525268220] [2024-11-13 15:37:39,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:37:39,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:37:39,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:39,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:37:39,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:37:39,958 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.8064516129032258) internal successors, (56), 32 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 15:37:40,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:37:40,100 INFO L93 Difference]: Finished difference Result 63 states and 108 transitions. [2024-11-13 15:37:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:37:40,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2024-11-13 15:37:40,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:37:40,113 INFO L225 Difference]: With dead ends: 63 [2024-11-13 15:37:40,113 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 15:37:40,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:37:40,121 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:37:40,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:37:40,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 15:37:40,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-13 15:37:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 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 15:37:40,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2024-11-13 15:37:40,163 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 27 [2024-11-13 15:37:40,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:37:40,164 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2024-11-13 15:37:40,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 15:37:40,164 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2024-11-13 15:37:40,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 15:37:40,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:37:40,165 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:40,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:37:40,166 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:37:40,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:40,167 INFO L85 PathProgramCache]: Analyzing trace with hash 876551951, now seen corresponding path program 1 times [2024-11-13 15:37:40,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:40,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620646774] [2024-11-13 15:37:40,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:40,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:37:40,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:40,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620646774] [2024-11-13 15:37:40,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620646774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:37:40,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:37:40,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:37:40,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650259019] [2024-11-13 15:37:40,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:37:40,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:37:40,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:40,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:37:40,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:37:40,457 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 15:37:40,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:37:40,660 INFO L93 Difference]: Finished difference Result 61 states and 89 transitions. [2024-11-13 15:37:40,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:37:40,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2024-11-13 15:37:40,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:37:40,663 INFO L225 Difference]: With dead ends: 61 [2024-11-13 15:37:40,663 INFO L226 Difference]: Without dead ends: 39 [2024-11-13 15:37:40,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:37:40,664 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:37:40,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 19 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:37:40,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-13 15:37:40,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-13 15:37:40,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 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 15:37:40,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-13 15:37:40,683 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 28 [2024-11-13 15:37:40,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:37:40,683 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-13 15:37:40,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 15:37:40,684 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-13 15:37:40,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 15:37:40,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:37:40,687 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:40,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:37:40,688 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:37:40,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:40,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1801970607, now seen corresponding path program 1 times [2024-11-13 15:37:40,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:40,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13348925] [2024-11-13 15:37:40,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:40,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:37:40,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:40,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13348925] [2024-11-13 15:37:40,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13348925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:37:40,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17268284] [2024-11-13 15:37:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:40,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:37:40,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:37:40,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:37:40,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:37:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:41,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:37:41,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:37:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:37:41,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:37:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:37:41,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17268284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:37:41,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:37:41,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 15:37:41,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98648834] [2024-11-13 15:37:41,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:37:41,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:37:41,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:41,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:37:41,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:37:41,294 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 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 15:37:41,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:37:41,478 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2024-11-13 15:37:41,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:37:41,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 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 38 [2024-11-13 15:37:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:37:41,482 INFO L225 Difference]: With dead ends: 74 [2024-11-13 15:37:41,482 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 15:37:41,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:37:41,483 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:37:41,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:37:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 15:37:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-13 15:37:41,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 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 15:37:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2024-11-13 15:37:41,501 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 38 [2024-11-13 15:37:41,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:37:41,501 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2024-11-13 15:37:41,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 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 15:37:41,501 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2024-11-13 15:37:41,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 15:37:41,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:37:41,502 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:41,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:37:41,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:37:41,703 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:37:41,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:41,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1726262266, now seen corresponding path program 2 times [2024-11-13 15:37:41,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:41,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859462487] [2024-11-13 15:37:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:41,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:41,941 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:37:41,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:41,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859462487] [2024-11-13 15:37:41,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859462487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:37:41,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814203379] [2024-11-13 15:37:41,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:37:41,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:37:41,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:37:41,946 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:37:41,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:37:42,073 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:37:42,073 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:37:42,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:37:42,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:37:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:37:42,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:37:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:37:42,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814203379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:37:42,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:37:42,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-13 15:37:42,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289165885] [2024-11-13 15:37:42,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:37:42,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:37:42,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:42,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:37:42,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:37:42,270 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 15:37:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:37:42,495 INFO L93 Difference]: Finished difference Result 81 states and 109 transitions. [2024-11-13 15:37:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:37:42,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 39 [2024-11-13 15:37:42,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:37:42,497 INFO L225 Difference]: With dead ends: 81 [2024-11-13 15:37:42,497 INFO L226 Difference]: Without dead ends: 50 [2024-11-13 15:37:42,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:37:42,499 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:37:42,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 28 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:37:42,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-13 15:37:42,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-13 15:37:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 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 15:37:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2024-11-13 15:37:42,523 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 39 [2024-11-13 15:37:42,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:37:42,523 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2024-11-13 15:37:42,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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 15:37:42,524 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2024-11-13 15:37:42,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 15:37:42,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:37:42,525 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:42,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:37:42,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:37:42,728 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:37:42,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:42,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1644522342, now seen corresponding path program 3 times [2024-11-13 15:37:42,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:42,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84898681] [2024-11-13 15:37:42,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:42,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:37:48,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:48,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84898681] [2024-11-13 15:37:48,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84898681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:37:48,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99290109] [2024-11-13 15:37:48,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:37:48,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:37:48,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:37:48,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:37:48,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:37:48,810 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 15:37:48,810 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:37:48,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-13 15:37:48,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:37:48,974 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 15 treesize of output 1 [2024-11-13 15:37:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:37:51,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:37:54,674 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 34 treesize of output 30 [2024-11-13 15:37:54,694 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:37:54,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 64 [2024-11-13 15:37:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:37:55,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99290109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:37:55,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:37:55,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 36, 37] total 85 [2024-11-13 15:37:55,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522036063] [2024-11-13 15:37:55,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:37:55,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-13 15:37:55,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:55,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-13 15:37:55,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=6837, Unknown=0, NotChecked=0, Total=7140 [2024-11-13 15:37:55,052 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 85 states, 85 states have (on average 1.4823529411764707) internal successors, (126), 85 states have internal predecessors, (126), 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 15:37:58,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:37:58,597 INFO L93 Difference]: Finished difference Result 123 states and 150 transitions. [2024-11-13 15:37:58,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-13 15:37:58,598 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.4823529411764707) internal successors, (126), 85 states have internal predecessors, (126), 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 49 [2024-11-13 15:37:58,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:37:58,604 INFO L225 Difference]: With dead ends: 123 [2024-11-13 15:37:58,604 INFO L226 Difference]: Without dead ends: 119 [2024-11-13 15:37:58,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2287 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=323, Invalid=7333, Unknown=0, NotChecked=0, Total=7656 [2024-11-13 15:37:58,611 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 3184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:37:58,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 422 Invalid, 3184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 3177 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-13 15:37:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-13 15:37:58,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 85. [2024-11-13 15:37:58,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2380952380952381) internal successors, (104), 84 states have internal predecessors, (104), 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 15:37:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2024-11-13 15:37:58,652 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 49 [2024-11-13 15:37:58,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:37:58,653 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2024-11-13 15:37:58,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.4823529411764707) internal successors, (126), 85 states have internal predecessors, (126), 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 15:37:58,653 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2024-11-13 15:37:58,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 15:37:58,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:37:58,657 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:37:58,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 15:37:58,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:37:58,859 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:37:58,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:37:58,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1796453777, now seen corresponding path program 4 times [2024-11-13 15:37:58,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:37:58,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082150101] [2024-11-13 15:37:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:37:58,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:37:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 15:37:59,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:37:59,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082150101] [2024-11-13 15:37:59,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082150101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:37:59,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038920419] [2024-11-13 15:37:59,102 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:37:59,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:37:59,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:37:59,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:37:59,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:37:59,220 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:37:59,220 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:37:59,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:37:59,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:37:59,364 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 15:37:59,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:37:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 15:37:59,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038920419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:37:59,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:37:59,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-13 15:37:59,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285656804] [2024-11-13 15:37:59,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:37:59,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 15:37:59,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:37:59,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 15:37:59,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:37:59,459 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 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 15:37:59,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:37:59,937 INFO L93 Difference]: Finished difference Result 178 states and 224 transitions. [2024-11-13 15:37:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:37:59,938 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 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 50 [2024-11-13 15:37:59,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:37:59,940 INFO L225 Difference]: With dead ends: 178 [2024-11-13 15:37:59,940 INFO L226 Difference]: Without dead ends: 97 [2024-11-13 15:37:59,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:37:59,941 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:37:59,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 62 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:37:59,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-13 15:37:59,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2024-11-13 15:37:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.2087912087912087) internal successors, (110), 91 states have internal predecessors, (110), 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 15:37:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2024-11-13 15:37:59,979 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 50 [2024-11-13 15:37:59,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:37:59,979 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2024-11-13 15:37:59,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 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 15:37:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2024-11-13 15:37:59,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 15:37:59,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:37:59,983 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:38:00,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:38:00,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:38:00,183 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:38:00,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:38:00,184 INFO L85 PathProgramCache]: Analyzing trace with hash 756170182, now seen corresponding path program 5 times [2024-11-13 15:38:00,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:38:00,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094159131] [2024-11-13 15:38:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:38:00,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:38:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:38:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 15:38:00,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:38:00,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094159131] [2024-11-13 15:38:00,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094159131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:38:00,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394102018] [2024-11-13 15:38:00,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:38:00,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:38:00,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:38:00,405 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:38:00,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:38:00,672 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 15:38:00,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:38:00,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:38:00,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:38:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 15:38:00,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:38:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 15:38:00,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394102018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:38:00,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:38:00,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-13 15:38:00,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887827035] [2024-11-13 15:38:00,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:38:00,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 15:38:00,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:38:00,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 15:38:00,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:38:00,915 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 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 15:38:01,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:38:01,332 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2024-11-13 15:38:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:38:01,333 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 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 51 [2024-11-13 15:38:01,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:38:01,334 INFO L225 Difference]: With dead ends: 97 [2024-11-13 15:38:01,334 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 15:38:01,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 89 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:38:01,335 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 46 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:38:01,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 58 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:38:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 15:38:01,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-13 15:38:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 60 states have internal predecessors, (71), 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 15:38:01,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2024-11-13 15:38:01,346 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 51 [2024-11-13 15:38:01,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:38:01,346 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2024-11-13 15:38:01,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 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 15:38:01,346 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2024-11-13 15:38:01,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 15:38:01,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:38:01,348 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:38:01,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:38:01,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 15:38:01,552 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:38:01,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:38:01,553 INFO L85 PathProgramCache]: Analyzing trace with hash -6153393, now seen corresponding path program 6 times [2024-11-13 15:38:01,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:38:01,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52411066] [2024-11-13 15:38:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:38:01,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:38:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:38:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:38:10,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:38:10,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52411066] [2024-11-13 15:38:10,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52411066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:38:10,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531410625] [2024-11-13 15:38:10,869 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:38:10,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:38:10,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:38:10,871 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:38:10,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:38:11,000 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 15:38:11,000 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:38:11,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-13 15:38:11,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:38:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:38:13,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:38:18,653 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:38:18,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52 treesize of output 89 [2024-11-13 15:38:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:38:19,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531410625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:38:19,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:38:19,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 36, 39] total 108 [2024-11-13 15:38:19,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804546659] [2024-11-13 15:38:19,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:38:19,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-11-13 15:38:19,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:38:19,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-11-13 15:38:19,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=11199, Unknown=0, NotChecked=0, Total=11556 [2024-11-13 15:38:19,024 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 108 states, 108 states have (on average 1.4537037037037037) internal successors, (157), 108 states have internal predecessors, (157), 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 15:38:32,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:38:32,714 INFO L93 Difference]: Finished difference Result 243 states and 293 transitions. [2024-11-13 15:38:32,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-13 15:38:32,715 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.4537037037037037) internal successors, (157), 108 states have internal predecessors, (157), 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 60 [2024-11-13 15:38:32,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:38:32,716 INFO L225 Difference]: With dead ends: 243 [2024-11-13 15:38:32,716 INFO L226 Difference]: Without dead ends: 238 [2024-11-13 15:38:32,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5088 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=1002, Invalid=21348, Unknown=0, NotChecked=0, Total=22350 [2024-11-13 15:38:32,721 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 169 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 8957 mSolverCounterSat, 661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 9618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 661 IncrementalHoareTripleChecker+Valid, 8957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:38:32,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 589 Invalid, 9618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [661 Valid, 8957 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-13 15:38:32,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-13 15:38:32,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 137. [2024-11-13 15:38:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.213235294117647) internal successors, (165), 136 states have internal predecessors, (165), 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 15:38:32,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 165 transitions. [2024-11-13 15:38:32,768 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 165 transitions. Word has length 60 [2024-11-13 15:38:32,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:38:32,768 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 165 transitions. [2024-11-13 15:38:32,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.4537037037037037) internal successors, (157), 108 states have internal predecessors, (157), 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 15:38:32,768 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 165 transitions. [2024-11-13 15:38:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-13 15:38:32,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:38:32,770 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:38:32,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:38:32,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 15:38:32,971 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:38:32,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:38:32,971 INFO L85 PathProgramCache]: Analyzing trace with hash -238300762, now seen corresponding path program 7 times [2024-11-13 15:38:32,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:38:32,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532617921] [2024-11-13 15:38:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:38:32,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:38:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:38:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-13 15:38:33,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:38:33,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532617921] [2024-11-13 15:38:33,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532617921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:38:33,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545341671] [2024-11-13 15:38:33,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:38:33,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:38:33,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:38:33,222 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:38:33,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:38:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:38:33,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:38:33,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:38:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-13 15:38:33,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:38:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-13 15:38:33,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545341671] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:38:33,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:38:33,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-13 15:38:33,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151894032] [2024-11-13 15:38:33,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:38:33,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:38:33,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:38:33,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:38:33,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:38:33,647 INFO L87 Difference]: Start difference. First operand 137 states and 165 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 15:38:34,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:38:34,276 INFO L93 Difference]: Finished difference Result 250 states and 299 transitions. [2024-11-13 15:38:34,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:38:34,277 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 61 [2024-11-13 15:38:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:38:34,278 INFO L225 Difference]: With dead ends: 250 [2024-11-13 15:38:34,279 INFO L226 Difference]: Without dead ends: 106 [2024-11-13 15:38:34,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 109 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:38:34,280 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:38:34,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 67 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:38:34,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-13 15:38:34,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-13 15:38:34,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.2) internal successors, (126), 105 states have internal predecessors, (126), 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 15:38:34,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2024-11-13 15:38:34,338 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 61 [2024-11-13 15:38:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:38:34,339 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2024-11-13 15:38:34,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 15:38:34,339 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2024-11-13 15:38:34,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 15:38:34,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:38:34,344 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:38:34,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:38:34,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:38:34,549 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:38:34,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:38:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1572990831, now seen corresponding path program 8 times [2024-11-13 15:38:34,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:38:34,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236142376] [2024-11-13 15:38:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:38:34,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:38:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:38:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-13 15:38:34,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:38:34,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236142376] [2024-11-13 15:38:34,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236142376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:38:34,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828991374] [2024-11-13 15:38:34,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:38:34,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:38:34,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:38:34,817 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:38:34,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:38:34,945 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:38:34,946 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:38:34,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:38:34,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:38:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-13 15:38:35,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:38:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-13 15:38:35,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828991374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:38:35,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:38:35,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-13 15:38:35,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440536076] [2024-11-13 15:38:35,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:38:35,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:38:35,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:38:35,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:38:35,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:38:35,197 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 15:38:35,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:38:35,563 INFO L93 Difference]: Finished difference Result 160 states and 197 transitions. [2024-11-13 15:38:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:38:35,564 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 62 [2024-11-13 15:38:35,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:38:35,565 INFO L225 Difference]: With dead ends: 160 [2024-11-13 15:38:35,565 INFO L226 Difference]: Without dead ends: 72 [2024-11-13 15:38:35,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:38:35,566 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:38:35,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 80 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:38:35,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-13 15:38:35,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-13 15:38:35,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 71 states have internal predecessors, (82), 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 15:38:35,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2024-11-13 15:38:35,609 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 62 [2024-11-13 15:38:35,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:38:35,610 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2024-11-13 15:38:35,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 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 15:38:35,610 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2024-11-13 15:38:35,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 15:38:35,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:38:35,612 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:38:35,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:38:35,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 15:38:35,813 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:38:35,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:38:35,814 INFO L85 PathProgramCache]: Analyzing trace with hash 920883142, now seen corresponding path program 9 times [2024-11-13 15:38:35,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:38:35,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102965582] [2024-11-13 15:38:35,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:38:35,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:38:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:38:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 3 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:38:47,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:38:47,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102965582] [2024-11-13 15:38:47,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102965582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:38:47,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399961097] [2024-11-13 15:38:47,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:38:47,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:38:47,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:38:47,150 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:38:47,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:38:47,305 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 15:38:47,305 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:38:47,310 WARN L253 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 179 conjuncts are in the unsatisfiable core [2024-11-13 15:38:47,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:38:47,439 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 19 treesize of output 1 [2024-11-13 15:38:54,801 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:38:54,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2024-11-13 15:38:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:38:55,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:39:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:39:05,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399961097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:39:05,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:39:05,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 50, 55] total 159 [2024-11-13 15:39:05,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141293052] [2024-11-13 15:39:05,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:39:05,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 159 states [2024-11-13 15:39:05,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:39:05,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2024-11-13 15:39:05,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1003, Invalid=24119, Unknown=0, NotChecked=0, Total=25122 [2024-11-13 15:39:05,776 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 159 states, 159 states have (on average 1.2641509433962264) internal successors, (201), 159 states have internal predecessors, (201), 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 15:39:39,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:39:39,402 INFO L93 Difference]: Finished difference Result 314 states and 367 transitions. [2024-11-13 15:39:39,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2024-11-13 15:39:39,403 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 159 states have (on average 1.2641509433962264) internal successors, (201), 159 states have internal predecessors, (201), 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 71 [2024-11-13 15:39:39,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:39:39,405 INFO L225 Difference]: With dead ends: 314 [2024-11-13 15:39:39,405 INFO L226 Difference]: Without dead ends: 167 [2024-11-13 15:39:39,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13378 ImplicationChecksByTransitivity, 40.3s TimeCoverageRelationStatistics Valid=3047, Invalid=48255, Unknown=0, NotChecked=0, Total=51302 [2024-11-13 15:39:39,410 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 617 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 12191 mSolverCounterSat, 2557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 14748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2557 IncrementalHoareTripleChecker+Valid, 12191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:39:39,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 697 Invalid, 14748 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2557 Valid, 12191 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2024-11-13 15:39:39,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-13 15:39:39,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 122. [2024-11-13 15:39:39,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.165289256198347) internal successors, (141), 121 states have internal predecessors, (141), 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 15:39:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 141 transitions. [2024-11-13 15:39:39,485 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 141 transitions. Word has length 71 [2024-11-13 15:39:39,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:39:39,485 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 141 transitions. [2024-11-13 15:39:39,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 159 states have (on average 1.2641509433962264) internal successors, (201), 159 states have internal predecessors, (201), 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 15:39:39,486 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 141 transitions. [2024-11-13 15:39:39,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 15:39:39,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:39:39,487 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:39:39,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:39:39,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 15:39:39,688 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:39:39,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:39:39,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2088988817, now seen corresponding path program 10 times [2024-11-13 15:39:39,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:39:39,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839966013] [2024-11-13 15:39:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:39:39,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:39:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:39:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-13 15:39:39,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:39:39,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839966013] [2024-11-13 15:39:39,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839966013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:39:39,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037914778] [2024-11-13 15:39:39,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:39:39,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:39:39,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:39:39,953 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:39:39,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:39:40,076 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:39:40,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:39:40,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:39:40,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:39:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-13 15:39:40,330 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:39:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-13 15:39:40,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037914778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:39:40,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:39:40,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2024-11-13 15:39:40,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462081519] [2024-11-13 15:39:40,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:39:40,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 15:39:40,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:39:40,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 15:39:40,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:39:40,515 INFO L87 Difference]: Start difference. First operand 122 states and 141 transitions. Second operand has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 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 15:39:41,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:39:41,125 INFO L93 Difference]: Finished difference Result 197 states and 235 transitions. [2024-11-13 15:39:41,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 15:39:41,126 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 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 74 [2024-11-13 15:39:41,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:39:41,127 INFO L225 Difference]: With dead ends: 197 [2024-11-13 15:39:41,127 INFO L226 Difference]: Without dead ends: 83 [2024-11-13 15:39:41,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 126 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=1248, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 15:39:41,128 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 72 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:39:41,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 75 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:39:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-13 15:39:41,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-13 15:39:41,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 states have internal predecessors, (93), 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 15:39:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2024-11-13 15:39:41,174 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 74 [2024-11-13 15:39:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:39:41,175 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2024-11-13 15:39:41,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 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 15:39:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2024-11-13 15:39:41,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-13 15:39:41,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:39:41,176 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:39:41,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:39:41,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 15:39:41,376 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:39:41,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:39:41,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1614226705, now seen corresponding path program 11 times [2024-11-13 15:39:41,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:39:41,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784152070] [2024-11-13 15:39:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:39:41,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:39:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:39:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 9 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:39:56,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:39:56,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784152070] [2024-11-13 15:39:56,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784152070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:39:56,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067760846] [2024-11-13 15:39:56,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:39:56,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:39:56,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:39:56,121 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:39:56,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:39:56,353 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 15:39:56,353 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:39:56,358 WARN L253 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 221 conjuncts are in the unsatisfiable core [2024-11-13 15:39:56,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:39:56,403 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 15 treesize of output 1 [2024-11-13 15:39:56,545 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 15 treesize of output 1 [2024-11-13 15:40:03,498 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:40:03,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:40:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 15:40:16,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067760846] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:40:16,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:40:16,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 61, 59] total 168 [2024-11-13 15:40:16,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341125587] [2024-11-13 15:40:16,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:40:16,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 168 states [2024-11-13 15:40:16,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:40:16,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2024-11-13 15:40:16,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=546, Invalid=27510, Unknown=0, NotChecked=0, Total=28056 [2024-11-13 15:40:16,633 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand has 168 states, 168 states have (on average 1.2857142857142858) internal successors, (216), 168 states have internal predecessors, (216), 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 15:40:45,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:40:45,535 INFO L93 Difference]: Finished difference Result 189 states and 217 transitions. [2024-11-13 15:40:45,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-13 15:40:45,536 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 168 states have (on average 1.2857142857142858) internal successors, (216), 168 states have internal predecessors, (216), 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 82 [2024-11-13 15:40:45,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:40:45,537 INFO L225 Difference]: With dead ends: 189 [2024-11-13 15:40:45,538 INFO L226 Difference]: Without dead ends: 185 [2024-11-13 15:40:45,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12227 ImplicationChecksByTransitivity, 38.9s TimeCoverageRelationStatistics Valid=1631, Invalid=54301, Unknown=0, NotChecked=0, Total=55932 [2024-11-13 15:40:45,540 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 63 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 16238 mSolverCounterSat, 777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 17015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 16238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:40:45,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 622 Invalid, 17015 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [777 Valid, 16238 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2024-11-13 15:40:45,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-13 15:40:45,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 114. [2024-11-13 15:40:45,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.1415929203539823) internal successors, (129), 113 states have internal predecessors, (129), 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 15:40:45,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2024-11-13 15:40:45,596 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 82 [2024-11-13 15:40:45,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:40:45,596 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2024-11-13 15:40:45,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 168 states have (on average 1.2857142857142858) internal successors, (216), 168 states have internal predecessors, (216), 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 15:40:45,597 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2024-11-13 15:40:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 15:40:45,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:40:45,598 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:40:45,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:40:45,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 15:40:45,799 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:40:45,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:40:45,800 INFO L85 PathProgramCache]: Analyzing trace with hash -834247162, now seen corresponding path program 12 times [2024-11-13 15:40:45,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:40:45,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582587382] [2024-11-13 15:40:45,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:40:45,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:40:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:40:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-13 15:40:46,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:40:46,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582587382] [2024-11-13 15:40:46,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582587382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:40:46,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717390328] [2024-11-13 15:40:46,160 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:40:46,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:40:46,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:40:46,163 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:40:46,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:40:46,345 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-13 15:40:46,346 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:40:46,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:40:46,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:40:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-13 15:40:46,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:40:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-13 15:40:46,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717390328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:40:46,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:40:46,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 28 [2024-11-13 15:40:46,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82104523] [2024-11-13 15:40:46,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:40:46,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 15:40:46,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:40:46,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 15:40:46,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2024-11-13 15:40:46,909 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand has 28 states, 28 states have (on average 2.6785714285714284) internal successors, (75), 28 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 15:40:47,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:40:47,736 INFO L93 Difference]: Finished difference Result 295 states and 342 transitions. [2024-11-13 15:40:47,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 15:40:47,737 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.6785714285714284) internal successors, (75), 28 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-13 15:40:47,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:40:47,738 INFO L225 Difference]: With dead ends: 295 [2024-11-13 15:40:47,738 INFO L226 Difference]: Without dead ends: 126 [2024-11-13 15:40:47,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 147 SyntacticMatches, 11 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=219, Invalid=837, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 15:40:47,739 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:40:47,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 63 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:40:47,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-13 15:40:47,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 121. [2024-11-13 15:40:47,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.125) internal successors, (135), 120 states have internal predecessors, (135), 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 15:40:47,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 135 transitions. [2024-11-13 15:40:47,822 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 135 transitions. Word has length 83 [2024-11-13 15:40:47,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:40:47,822 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 135 transitions. [2024-11-13 15:40:47,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.6785714285714284) internal successors, (75), 28 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 15:40:47,823 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 135 transitions. [2024-11-13 15:40:47,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-13 15:40:47,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:40:47,823 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:40:47,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:40:48,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 15:40:48,024 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:40:48,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:40:48,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1209684145, now seen corresponding path program 13 times [2024-11-13 15:40:48,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:40:48,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891264545] [2024-11-13 15:40:48,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:40:48,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:40:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:40:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-13 15:40:48,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:40:48,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891264545] [2024-11-13 15:40:48,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891264545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:40:48,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173698647] [2024-11-13 15:40:48,398 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:40:48,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:40:48,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:40:48,400 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:40:48,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:40:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:40:48,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:40:48,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:40:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-13 15:40:48,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:40:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-13 15:40:49,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173698647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:40:49,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:40:49,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-13 15:40:49,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214028808] [2024-11-13 15:40:49,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:40:49,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 15:40:49,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:40:49,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 15:40:49,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:40:49,022 INFO L87 Difference]: Start difference. First operand 121 states and 135 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 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 15:40:49,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:40:49,387 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2024-11-13 15:40:49,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 15:40:49,387 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 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 88 [2024-11-13 15:40:49,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:40:49,388 INFO L225 Difference]: With dead ends: 126 [2024-11-13 15:40:49,388 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 15:40:49,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 156 SyntacticMatches, 12 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:40:49,389 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:40:49,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 57 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:40:49,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 15:40:49,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-13 15:40:49,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.118279569892473) internal successors, (104), 93 states have internal predecessors, (104), 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 15:40:49,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2024-11-13 15:40:49,500 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 88 [2024-11-13 15:40:49,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:40:49,503 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2024-11-13 15:40:49,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 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 15:40:49,503 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2024-11-13 15:40:49,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-13 15:40:49,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:40:49,505 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:40:49,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 15:40:49,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 15:40:49,707 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:40:49,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:40:49,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1853871066, now seen corresponding path program 14 times [2024-11-13 15:40:49,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:40:49,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383926212] [2024-11-13 15:40:49,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:40:49,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:40:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:41:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 19 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:41:08,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:41:08,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383926212] [2024-11-13 15:41:08,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383926212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:41:08,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394175790] [2024-11-13 15:41:08,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:41:08,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:41:08,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:41:08,574 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:41:08,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:41:08,749 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:41:08,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:41:08,755 WARN L253 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 261 conjuncts are in the unsatisfiable core [2024-11-13 15:41:08,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:41:09,052 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 15 treesize of output 1 [2024-11-13 15:41:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:41:20,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:41:40,770 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 15:41:40,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394175790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:41:40,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:41:40,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 72, 69] total 203 [2024-11-13 15:41:40,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478544194] [2024-11-13 15:41:40,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:41:40,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2024-11-13 15:41:40,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:41:40,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2024-11-13 15:41:40,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=659, Invalid=40347, Unknown=0, NotChecked=0, Total=41006 [2024-11-13 15:41:40,775 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 203 states, 203 states have (on average 1.2364532019704433) internal successors, (251), 203 states have internal predecessors, (251), 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 15:42:24,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:42:24,715 INFO L93 Difference]: Finished difference Result 214 states and 242 transitions. [2024-11-13 15:42:24,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-13 15:42:24,715 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 1.2364532019704433) internal successors, (251), 203 states have internal predecessors, (251), 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 93 [2024-11-13 15:42:24,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:42:24,716 INFO L225 Difference]: With dead ends: 214 [2024-11-13 15:42:24,716 INFO L226 Difference]: Without dead ends: 210 [2024-11-13 15:42:24,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18896 ImplicationChecksByTransitivity, 59.5s TimeCoverageRelationStatistics Valid=2162, Invalid=78210, Unknown=0, NotChecked=0, Total=80372 [2024-11-13 15:42:24,719 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 101 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 22506 mSolverCounterSat, 1028 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 23534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1028 IncrementalHoareTripleChecker+Valid, 22506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:42:24,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 807 Invalid, 23534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1028 Valid, 22506 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2024-11-13 15:42:24,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-13 15:42:24,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 129. [2024-11-13 15:42:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.125) internal successors, (144), 128 states have internal predecessors, (144), 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 15:42:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 144 transitions. [2024-11-13 15:42:24,806 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 144 transitions. Word has length 93 [2024-11-13 15:42:24,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:42:24,806 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 144 transitions. [2024-11-13 15:42:24,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 1.2364532019704433) internal successors, (251), 203 states have internal predecessors, (251), 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 15:42:24,807 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 144 transitions. [2024-11-13 15:42:24,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-13 15:42:24,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:42:24,808 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:24,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:42:25,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:42:25,008 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:42:25,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:25,009 INFO L85 PathProgramCache]: Analyzing trace with hash -946190673, now seen corresponding path program 15 times [2024-11-13 15:42:25,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:25,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268740038] [2024-11-13 15:42:25,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:25,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 22 proven. 27 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-13 15:42:25,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:25,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268740038] [2024-11-13 15:42:25,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268740038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:42:25,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276568321] [2024-11-13 15:42:25,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:42:25,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:25,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:42:25,352 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:42:25,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:42:25,539 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 15:42:25,539 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:42:25,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:42:25,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:42:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-13 15:42:25,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:42:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2024-11-13 15:42:25,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276568321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:42:25,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:42:25,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-13 15:42:25,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484634689] [2024-11-13 15:42:25,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:42:25,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:42:25,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:25,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:42:25,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:42:25,952 INFO L87 Difference]: Start difference. First operand 129 states and 144 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 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 15:42:26,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:42:26,673 INFO L93 Difference]: Finished difference Result 322 states and 361 transitions. [2024-11-13 15:42:26,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:42:26,673 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 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 94 [2024-11-13 15:42:26,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:42:26,674 INFO L225 Difference]: With dead ends: 322 [2024-11-13 15:42:26,674 INFO L226 Difference]: Without dead ends: 130 [2024-11-13 15:42:26,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 166 SyntacticMatches, 13 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:42:26,676 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:42:26,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 95 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:42:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-13 15:42:26,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-11-13 15:42:26,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.124031007751938) internal successors, (145), 129 states have internal predecessors, (145), 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 15:42:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2024-11-13 15:42:26,800 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 94 [2024-11-13 15:42:26,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:42:26,800 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 145 transitions. [2024-11-13 15:42:26,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 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 15:42:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 145 transitions. [2024-11-13 15:42:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 15:42:26,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:42:26,801 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:26,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 15:42:27,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 15:42:27,001 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:42:27,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash -913521146, now seen corresponding path program 16 times [2024-11-13 15:42:27,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:27,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019166510] [2024-11-13 15:42:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:27,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-13 15:42:27,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:27,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019166510] [2024-11-13 15:42:27,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019166510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:42:27,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395665892] [2024-11-13 15:42:27,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:42:27,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:27,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:42:27,374 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:42:27,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:42:27,535 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:42:27,536 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:42:27,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:42:27,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:42:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-13 15:42:27,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:42:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-13 15:42:28,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395665892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:42:28,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:42:28,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2024-11-13 15:42:28,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335595984] [2024-11-13 15:42:28,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:42:28,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 15:42:28,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:42:28,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 15:42:28,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1265, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 15:42:28,165 INFO L87 Difference]: Start difference. First operand 130 states and 145 transitions. Second operand has 39 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 39 states have internal predecessors, (91), 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 15:42:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:42:28,798 INFO L93 Difference]: Finished difference Result 216 states and 249 transitions. [2024-11-13 15:42:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 15:42:28,799 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 39 states have internal predecessors, (91), 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 95 [2024-11-13 15:42:28,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:42:28,800 INFO L225 Difference]: With dead ends: 216 [2024-11-13 15:42:28,800 INFO L226 Difference]: Without dead ends: 105 [2024-11-13 15:42:28,801 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 160 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=307, Invalid=1763, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 15:42:28,802 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 102 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:42:28,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 99 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:42:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-13 15:42:28,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-13 15:42:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.1057692307692308) internal successors, (115), 104 states have internal predecessors, (115), 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 15:42:28,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2024-11-13 15:42:28,905 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 95 [2024-11-13 15:42:28,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:42:28,905 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2024-11-13 15:42:28,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 39 states have internal predecessors, (91), 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 15:42:28,906 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2024-11-13 15:42:28,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-13 15:42:28,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:42:28,907 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:42:28,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 15:42:29,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 15:42:29,107 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:42:29,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:42:29,108 INFO L85 PathProgramCache]: Analyzing trace with hash 558244495, now seen corresponding path program 17 times [2024-11-13 15:42:29,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:42:29,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154447716] [2024-11-13 15:42:29,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:42:29,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:42:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:42:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 40 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:42:52,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:42:52,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154447716] [2024-11-13 15:42:52,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154447716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:42:52,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846809741] [2024-11-13 15:42:52,463 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:42:52,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:42:52,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:42:52,465 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:42:52,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:42:53,228 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-13 15:42:53,228 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:42:53,236 WARN L253 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 313 conjuncts are in the unsatisfiable core [2024-11-13 15:42:53,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:42:53,268 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 15 treesize of output 1 [2024-11-13 15:42:53,289 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 15 treesize of output 1 [2024-11-13 15:42:53,300 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 15 treesize of output 1 [2024-11-13 15:42:53,315 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 15 treesize of output 1 [2024-11-13 15:42:53,326 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 15 treesize of output 1 [2024-11-13 15:42:53,340 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 15 treesize of output 1 [2024-11-13 15:43:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:43:00,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:43:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 15:43:20,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846809741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:43:20,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:43:20,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 83, 79] total 207 [2024-11-13 15:43:20,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453520155] [2024-11-13 15:43:20,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:43:20,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 207 states [2024-11-13 15:43:20,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:43:20,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2024-11-13 15:43:20,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=41781, Unknown=0, NotChecked=0, Total=42642 [2024-11-13 15:43:20,637 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand has 207 states, 207 states have (on average 1.2318840579710144) internal successors, (255), 207 states have internal predecessors, (255), 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 15:44:04,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:44:04,759 INFO L93 Difference]: Finished difference Result 244 states and 273 transitions. [2024-11-13 15:44:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-13 15:44:04,760 INFO L78 Accepts]: Start accepts. Automaton has has 207 states, 207 states have (on average 1.2318840579710144) internal successors, (255), 207 states have internal predecessors, (255), 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 104 [2024-11-13 15:44:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:44:04,761 INFO L225 Difference]: With dead ends: 244 [2024-11-13 15:44:04,762 INFO L226 Difference]: Without dead ends: 240 [2024-11-13 15:44:04,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23891 ImplicationChecksByTransitivity, 57.2s TimeCoverageRelationStatistics Valid=2644, Invalid=85268, Unknown=0, NotChecked=0, Total=87912 [2024-11-13 15:44:04,766 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 72 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 20930 mSolverCounterSat, 891 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 21821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 891 IncrementalHoareTripleChecker+Valid, 20930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:44:04,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 572 Invalid, 21821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [891 Valid, 20930 Invalid, 0 Unknown, 0 Unchecked, 19.7s Time] [2024-11-13 15:44:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-13 15:44:04,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 144. [2024-11-13 15:44:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.1118881118881119) internal successors, (159), 143 states have internal predecessors, (159), 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 15:44:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 159 transitions. [2024-11-13 15:44:04,902 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 159 transitions. Word has length 104 [2024-11-13 15:44:04,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:44:04,903 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 159 transitions. [2024-11-13 15:44:04,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 207 states, 207 states have (on average 1.2318840579710144) internal successors, (255), 207 states have internal predecessors, (255), 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 15:44:04,903 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 159 transitions. [2024-11-13 15:44:04,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-13 15:44:04,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:44:04,904 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:44:04,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 15:44:05,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:05,105 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:44:05,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:44:05,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1934396826, now seen corresponding path program 18 times [2024-11-13 15:44:05,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:44:05,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351099119] [2024-11-13 15:44:05,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:05,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:44:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-13 15:44:05,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:44:05,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351099119] [2024-11-13 15:44:05,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351099119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:44:05,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928742824] [2024-11-13 15:44:05,570 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:44:05,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:05,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:44:05,572 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:44:05,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:44:05,835 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-13 15:44:05,835 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:44:05,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 15:44:05,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:44:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-13 15:44:06,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:44:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-13 15:44:06,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928742824] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:44:06,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:44:06,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-13 15:44:06,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20236897] [2024-11-13 15:44:06,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:44:06,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 15:44:06,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:44:06,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 15:44:06,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:44:06,307 INFO L87 Difference]: Start difference. First operand 144 states and 159 transitions. Second operand has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 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 15:44:07,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:44:07,093 INFO L93 Difference]: Finished difference Result 360 states and 399 transitions. [2024-11-13 15:44:07,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 15:44:07,093 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 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 105 [2024-11-13 15:44:07,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:44:07,094 INFO L225 Difference]: With dead ends: 360 [2024-11-13 15:44:07,094 INFO L226 Difference]: Without dead ends: 145 [2024-11-13 15:44:07,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 185 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:44:07,096 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:44:07,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 56 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:44:07,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-13 15:44:07,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-13 15:44:07,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.1111111111111112) internal successors, (160), 144 states have internal predecessors, (160), 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 15:44:07,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 160 transitions. [2024-11-13 15:44:07,284 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 160 transitions. Word has length 105 [2024-11-13 15:44:07,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:44:07,284 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 160 transitions. [2024-11-13 15:44:07,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 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 15:44:07,284 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 160 transitions. [2024-11-13 15:44:07,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-13 15:44:07,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:44:07,289 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:44:07,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 15:44:07,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:07,489 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:44:07,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:44:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash -34945361, now seen corresponding path program 19 times [2024-11-13 15:44:07,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:44:07,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753371] [2024-11-13 15:44:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:07,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:44:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-13 15:44:07,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:44:07,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753371] [2024-11-13 15:44:07,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753371] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:44:07,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807513720] [2024-11-13 15:44:07,890 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:44:07,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:07,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:44:07,892 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:44:07,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:44:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:08,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 15:44:08,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:44:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-13 15:44:08,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:44:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-13 15:44:08,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807513720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:44:08,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:44:08,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-13 15:44:08,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211299296] [2024-11-13 15:44:08,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:44:08,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 15:44:08,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:44:08,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 15:44:08,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:44:08,363 INFO L87 Difference]: Start difference. First operand 145 states and 160 transitions. Second operand has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 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 15:44:08,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:44:08,825 INFO L93 Difference]: Finished difference Result 240 states and 273 transitions. [2024-11-13 15:44:08,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 15:44:08,825 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 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 106 [2024-11-13 15:44:08,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:44:08,826 INFO L225 Difference]: With dead ends: 240 [2024-11-13 15:44:08,827 INFO L226 Difference]: Without dead ends: 116 [2024-11-13 15:44:08,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 186 SyntacticMatches, 16 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2024-11-13 15:44:08,827 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 60 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:44:08,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 54 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:44:08,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-13 15:44:08,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-13 15:44:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0956521739130434) internal successors, (126), 115 states have internal predecessors, (126), 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 15:44:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2024-11-13 15:44:08,954 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 106 [2024-11-13 15:44:08,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:44:08,954 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2024-11-13 15:44:08,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 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 15:44:08,954 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2024-11-13 15:44:08,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-13 15:44:08,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:44:08,955 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:44:08,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 15:44:09,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:09,156 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:44:09,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:44:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash -30326650, now seen corresponding path program 20 times [2024-11-13 15:44:09,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:44:09,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664552802] [2024-11-13 15:44:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:44:09,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:44:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:44:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 54 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:44:37,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:44:37,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664552802] [2024-11-13 15:44:37,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664552802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:44:37,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553827697] [2024-11-13 15:44:37,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:44:37,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:44:37,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:44:37,743 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:44:37,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:44:37,960 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:44:37,960 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:44:37,967 WARN L253 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 345 conjuncts are in the unsatisfiable core [2024-11-13 15:44:37,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:44:38,450 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 15 treesize of output 1 [2024-11-13 15:44:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:44:49,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:45:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 15:45:26,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553827697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:45:26,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:45:26,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 94, 89] total 236 [2024-11-13 15:45:26,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232976430] [2024-11-13 15:45:26,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:45:26,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 236 states [2024-11-13 15:45:26,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:45:26,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2024-11-13 15:45:26,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=840, Invalid=54620, Unknown=0, NotChecked=0, Total=55460 [2024-11-13 15:45:26,463 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 236 states, 236 states have (on average 1.2033898305084745) internal successors, (284), 236 states have internal predecessors, (284), 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 15:46:37,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:46:37,389 INFO L93 Difference]: Finished difference Result 260 states and 288 transitions. [2024-11-13 15:46:37,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-13 15:46:37,392 INFO L78 Accepts]: Start accepts. Automaton has has 236 states, 236 states have (on average 1.2033898305084745) internal successors, (284), 236 states have internal predecessors, (284), 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 115 [2024-11-13 15:46:37,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:46:37,394 INFO L225 Difference]: With dead ends: 260 [2024-11-13 15:46:37,394 INFO L226 Difference]: Without dead ends: 256 [2024-11-13 15:46:37,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26551 ImplicationChecksByTransitivity, 95.9s TimeCoverageRelationStatistics Valid=3265, Invalid=111995, Unknown=0, NotChecked=0, Total=115260 [2024-11-13 15:46:37,398 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 85 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 30672 mSolverCounterSat, 1035 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 31707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1035 IncrementalHoareTripleChecker+Valid, 30672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:46:37,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 853 Invalid, 31707 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1035 Valid, 30672 Invalid, 0 Unknown, 0 Unchecked, 30.1s Time] [2024-11-13 15:46:37,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-13 15:46:37,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 159. [2024-11-13 15:46:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.1012658227848102) internal successors, (174), 158 states have internal predecessors, (174), 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 15:46:37,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 174 transitions. [2024-11-13 15:46:37,563 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 174 transitions. Word has length 115 [2024-11-13 15:46:37,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:46:37,563 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 174 transitions. [2024-11-13 15:46:37,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 236 states, 236 states have (on average 1.2033898305084745) internal successors, (284), 236 states have internal predecessors, (284), 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 15:46:37,563 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 174 transitions. [2024-11-13 15:46:37,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-13 15:46:37,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:46:37,564 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:37,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 15:46:37,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:37,764 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:46:37,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:37,765 INFO L85 PathProgramCache]: Analyzing trace with hash -75784625, now seen corresponding path program 21 times [2024-11-13 15:46:37,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:37,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025425341] [2024-11-13 15:46:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:37,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 37 proven. 44 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-13 15:46:38,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:38,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025425341] [2024-11-13 15:46:38,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025425341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:46:38,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411423991] [2024-11-13 15:46:38,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:46:38,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:38,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:46:38,159 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:46:38,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:46:38,414 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-13 15:46:38,414 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:46:38,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 15:46:38,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:46:38,876 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-13 15:46:38,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:46:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-13 15:46:39,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411423991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:46:39,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:46:39,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2024-11-13 15:46:39,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371258450] [2024-11-13 15:46:39,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:46:39,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-13 15:46:39,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:39,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-13 15:46:39,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=2029, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 15:46:39,325 INFO L87 Difference]: Start difference. First operand 159 states and 174 transitions. Second operand has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 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 15:46:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:46:42,226 INFO L93 Difference]: Finished difference Result 455 states and 507 transitions. [2024-11-13 15:46:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 15:46:42,226 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 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 116 [2024-11-13 15:46:42,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:46:42,228 INFO L225 Difference]: With dead ends: 455 [2024-11-13 15:46:42,228 INFO L226 Difference]: Without dead ends: 217 [2024-11-13 15:46:42,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 212 SyntacticMatches, 10 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=630, Invalid=3792, Unknown=0, NotChecked=0, Total=4422 [2024-11-13 15:46:42,231 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 3188 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 3740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 3188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:46:42,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 159 Invalid, 3740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 3188 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 15:46:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-13 15:46:42,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 198. [2024-11-13 15:46:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.0964467005076142) internal successors, (216), 197 states have internal predecessors, (216), 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 15:46:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 216 transitions. [2024-11-13 15:46:42,512 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 216 transitions. Word has length 116 [2024-11-13 15:46:42,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:46:42,513 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 216 transitions. [2024-11-13 15:46:42,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 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 15:46:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 216 transitions. [2024-11-13 15:46:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-13 15:46:42,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:46:42,514 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:42,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-13 15:46:42,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:42,715 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:46:42,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:42,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1167815130, now seen corresponding path program 22 times [2024-11-13 15:46:42,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:42,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132838373] [2024-11-13 15:46:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:42,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 28 proven. 53 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-13 15:46:43,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:43,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132838373] [2024-11-13 15:46:43,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132838373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:46:43,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492068724] [2024-11-13 15:46:43,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:46:43,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:43,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:46:43,211 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:46:43,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 15:46:43,410 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:46:43,411 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:46:43,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 15:46:43,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:46:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-13 15:46:44,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:46:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2024-11-13 15:46:44,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492068724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:46:44,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:46:44,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2024-11-13 15:46:44,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864981214] [2024-11-13 15:46:44,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:46:44,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-13 15:46:44,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:44,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-13 15:46:44,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=2021, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 15:46:44,690 INFO L87 Difference]: Start difference. First operand 198 states and 216 transitions. Second operand has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 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 15:46:45,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:46:45,732 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2024-11-13 15:46:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 15:46:45,732 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 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 117 [2024-11-13 15:46:45,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:46:45,735 INFO L225 Difference]: With dead ends: 291 [2024-11-13 15:46:45,735 INFO L226 Difference]: Without dead ends: 127 [2024-11-13 15:46:45,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 196 SyntacticMatches, 10 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=474, Invalid=2832, Unknown=0, NotChecked=0, Total=3306 [2024-11-13 15:46:45,737 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 122 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:46:45,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 84 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:46:45,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-13 15:46:45,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-13 15:46:45,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0873015873015872) internal successors, (137), 126 states have internal predecessors, (137), 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 15:46:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2024-11-13 15:46:45,963 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 117 [2024-11-13 15:46:45,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:46:45,963 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2024-11-13 15:46:45,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 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 15:46:45,963 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2024-11-13 15:46:45,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 15:46:45,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:46:45,964 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:45,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 15:46:46,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:46,165 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:46:46,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:46,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1308881455, now seen corresponding path program 23 times [2024-11-13 15:46:46,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:46,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318578878] [2024-11-13 15:46:46,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:46,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:47:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 57 proven. 438 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:47:25,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:47:25,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318578878] [2024-11-13 15:47:25,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318578878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:47:25,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702269655] [2024-11-13 15:47:25,346 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:47:25,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:47:25,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:47:25,348 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:47:25,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 15:47:31,693 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-13 15:47:31,693 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:47:31,710 WARN L253 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 399 conjuncts are in the unsatisfiable core [2024-11-13 15:47:31,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:47:31,742 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 15 treesize of output 1 [2024-11-13 15:47:31,750 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 15 treesize of output 1 [2024-11-13 15:47:31,759 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 15 treesize of output 1 [2024-11-13 15:47:31,764 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 15 treesize of output 1 [2024-11-13 15:47:31,905 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 15 treesize of output 1 [2024-11-13 15:47:32,052 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 15 treesize of output 1 [2024-11-13 15:47:32,207 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 15 treesize of output 1 [2024-11-13 15:47:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:47:49,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:48:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 15:48:41,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702269655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:48:41,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:48:41,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 105, 99] total 266 [2024-11-13 15:48:41,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842685633] [2024-11-13 15:48:41,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:48:41,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 266 states [2024-11-13 15:48:41,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:48:41,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 266 interpolants. [2024-11-13 15:48:41,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=920, Invalid=69570, Unknown=0, NotChecked=0, Total=70490 [2024-11-13 15:48:41,316 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 266 states, 266 states have (on average 1.1804511278195489) internal successors, (314), 266 states have internal predecessors, (314), 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 15:50:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:50:15,304 INFO L93 Difference]: Finished difference Result 493 states and 544 transitions. [2024-11-13 15:50:15,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2024-11-13 15:50:15,305 INFO L78 Accepts]: Start accepts. Automaton has has 266 states, 266 states have (on average 1.1804511278195489) internal successors, (314), 266 states have internal predecessors, (314), 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 126 [2024-11-13 15:50:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:50:15,307 INFO L225 Difference]: With dead ends: 493 [2024-11-13 15:50:15,307 INFO L226 Difference]: Without dead ends: 488 [2024-11-13 15:50:15,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31845 ImplicationChecksByTransitivity, 130.4s TimeCoverageRelationStatistics Valid=3888, Invalid=146268, Unknown=0, NotChecked=0, Total=150156 [2024-11-13 15:50:15,315 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 194 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 38156 mSolverCounterSat, 1709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 39865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1709 IncrementalHoareTripleChecker+Valid, 38156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:50:15,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 787 Invalid, 39865 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1709 Valid, 38156 Invalid, 0 Unknown, 0 Unchecked, 41.6s Time] [2024-11-13 15:50:15,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-11-13 15:50:15,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 298. [2024-11-13 15:50:15,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.101010101010101) internal successors, (327), 297 states have internal predecessors, (327), 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 15:50:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 327 transitions. [2024-11-13 15:50:15,813 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 327 transitions. Word has length 126 [2024-11-13 15:50:15,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:50:15,814 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 327 transitions. [2024-11-13 15:50:15,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 266 states, 266 states have (on average 1.1804511278195489) internal successors, (314), 266 states have internal predecessors, (314), 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 15:50:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 327 transitions. [2024-11-13 15:50:15,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-13 15:50:15,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:50:15,816 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:50:15,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-13 15:50:16,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:16,017 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:50:16,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:50:16,017 INFO L85 PathProgramCache]: Analyzing trace with hash -60229946, now seen corresponding path program 24 times [2024-11-13 15:50:16,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:50:16,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88572667] [2024-11-13 15:50:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:50:16,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:50:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:16,623 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 46 proven. 54 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-13 15:50:16,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:50:16,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88572667] [2024-11-13 15:50:16,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88572667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:50:16,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467624740] [2024-11-13 15:50:16,623 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:50:16,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:16,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:50:16,626 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:50:16,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 15:50:17,037 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-13 15:50:17,037 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:50:17,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:50:17,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:50:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-13 15:50:17,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:50:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-13 15:50:17,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467624740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:50:17,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:50:17,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-13 15:50:17,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980306807] [2024-11-13 15:50:17,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:50:17,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 15:50:17,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:50:17,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 15:50:17,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 15:50:17,794 INFO L87 Difference]: Start difference. First operand 298 states and 327 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 35 states have internal predecessors, (70), 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 15:50:19,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:50:19,425 INFO L93 Difference]: Finished difference Result 492 states and 537 transitions. [2024-11-13 15:50:19,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 15:50:19,426 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 35 states have internal predecessors, (70), 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 127 [2024-11-13 15:50:19,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:50:19,429 INFO L225 Difference]: With dead ends: 492 [2024-11-13 15:50:19,429 INFO L226 Difference]: Without dead ends: 220 [2024-11-13 15:50:19,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 223 SyntacticMatches, 19 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 15:50:19,430 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:50:19,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 118 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 15:50:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-13 15:50:19,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-11-13 15:50:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.095890410958904) internal successors, (240), 219 states have internal predecessors, (240), 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 15:50:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 240 transitions. [2024-11-13 15:50:19,916 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 240 transitions. Word has length 127 [2024-11-13 15:50:19,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:50:19,916 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 240 transitions. [2024-11-13 15:50:19,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 35 states have internal predecessors, (70), 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 15:50:19,917 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 240 transitions. [2024-11-13 15:50:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-13 15:50:19,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:50:19,918 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:50:19,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 15:50:20,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 15:50:20,122 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:50:20,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:50:20,122 INFO L85 PathProgramCache]: Analyzing trace with hash 147717711, now seen corresponding path program 25 times [2024-11-13 15:50:20,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:50:20,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944329927] [2024-11-13 15:50:20,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:50:20,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:50:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:20,932 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2024-11-13 15:50:20,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:50:20,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944329927] [2024-11-13 15:50:20,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944329927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:50:20,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082574752] [2024-11-13 15:50:20,932 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:50:20,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:20,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:50:20,935 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:50:20,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 15:50:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:21,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:50:21,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:50:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2024-11-13 15:50:21,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:50:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2024-11-13 15:50:21,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082574752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:50:21,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:50:21,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-13 15:50:21,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108297006] [2024-11-13 15:50:21,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:50:21,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 15:50:21,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:50:21,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 15:50:21,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=901, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 15:50:21,773 INFO L87 Difference]: Start difference. First operand 220 states and 240 transitions. Second operand has 35 states, 35 states have (on average 2.0) internal successors, (70), 35 states have internal predecessors, (70), 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 15:50:22,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:50:22,593 INFO L93 Difference]: Finished difference Result 322 states and 359 transitions. [2024-11-13 15:50:22,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 15:50:22,595 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 35 states have internal predecessors, (70), 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 128 [2024-11-13 15:50:22,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:50:22,597 INFO L225 Difference]: With dead ends: 322 [2024-11-13 15:50:22,597 INFO L226 Difference]: Without dead ends: 138 [2024-11-13 15:50:22,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 224 SyntacticMatches, 20 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=302, Invalid=958, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 15:50:22,600 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 42 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:50:22,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 73 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:50:22,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-13 15:50:22,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-11-13 15:50:22,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0802919708029197) internal successors, (148), 137 states have internal predecessors, (148), 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 15:50:22,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions. [2024-11-13 15:50:22,825 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 128 [2024-11-13 15:50:22,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:50:22,826 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions. [2024-11-13 15:50:22,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.0) internal successors, (70), 35 states have internal predecessors, (70), 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 15:50:22,826 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions. [2024-11-13 15:50:22,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-13 15:50:22,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:50:22,826 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:50:22,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 15:50:23,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:23,027 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:50:23,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:50:23,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1154272486, now seen corresponding path program 26 times [2024-11-13 15:50:23,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:50:23,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878584950] [2024-11-13 15:50:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:50:23,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:50:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 90 proven. 515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:51:09,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:09,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878584950] [2024-11-13 15:51:09,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878584950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:51:09,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998579818] [2024-11-13 15:51:09,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:51:09,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:09,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:51:09,045 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:51:09,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4041d393-ce71-44e0-9376-0c2a7c9e3a77/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 15:51:09,322 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:51:09,322 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:51:09,330 WARN L253 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 429 conjuncts are in the unsatisfiable core [2024-11-13 15:51:09,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:51:10,292 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 15 treesize of output 1