./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC --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 c28ec531d32a995842654b11d319d79f5f6e1bd0d3e33d9bd3cc173d0787760c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:53:25,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:53:26,002 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:53:26,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:53:26,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:53:26,066 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:53:26,067 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:53:26,067 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:53:26,068 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:53:26,068 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:53:26,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:53:26,068 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:53:26,068 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:53:26,069 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:53:26,069 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:53:26,069 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:53:26,069 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:53:26,069 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:53:26,069 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:53:26,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:53:26,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:53:26,070 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:53:26,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:53:26,073 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:53:26,073 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:53:26,073 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:53:26,073 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:53:26,073 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:53:26,073 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:53:26,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:53:26,074 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:53:26,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:53:26,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:53:26,074 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:53:26,074 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:53:26,074 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:53:26,074 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:53:26,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:53:26,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:53:26,075 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:53:26,075 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:53:26,075 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:53:26,075 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:53:26,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:53:26,076 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:53:26,076 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:53:26,077 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:53:26,077 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:53:26,078 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_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC 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 -> c28ec531d32a995842654b11d319d79f5f6e1bd0d3e33d9bd3cc173d0787760c [2024-11-24 01:53:26,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:53:26,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:53:26,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:53:26,499 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:53:26,499 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:53:26,501 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/array-fpi/ifeqn3.c [2024-11-24 01:53:29,869 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/data/fe7c3b747/8096d821093448d7903ba824194979f2/FLAG5ce1b115b [2024-11-24 01:53:30,247 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:53:30,248 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/sv-benchmarks/c/array-fpi/ifeqn3.c [2024-11-24 01:53:30,271 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/data/fe7c3b747/8096d821093448d7903ba824194979f2/FLAG5ce1b115b [2024-11-24 01:53:30,296 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/data/fe7c3b747/8096d821093448d7903ba824194979f2 [2024-11-24 01:53:30,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:53:30,300 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:53:30,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:53:30,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:53:30,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:53:30,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318a90e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30, skipping insertion in model container [2024-11-24 01:53:30,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,327 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:53:30,507 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_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/sv-benchmarks/c/array-fpi/ifeqn3.c[589,602] [2024-11-24 01:53:30,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:53:30,544 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:53:30,557 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_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/sv-benchmarks/c/array-fpi/ifeqn3.c[589,602] [2024-11-24 01:53:30,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:53:30,589 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:53:30,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30 WrapperNode [2024-11-24 01:53:30,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:53:30,593 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:53:30,593 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:53:30,594 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:53:30,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,609 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,629 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-11-24 01:53:30,629 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:53:30,630 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:53:30,630 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:53:30,630 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:53:30,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,643 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,657 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 4, 4]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-11-24 01:53:30,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,664 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,665 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:53:30,675 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:53:30,675 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:53:30,675 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:53:30,676 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (1/1) ... [2024-11-24 01:53:30,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:53:30,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:30,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:53:30,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:53:30,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:53:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:53:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:53:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 01:53:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:53:30,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:53:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 01:53:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:53:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:53:30,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:53:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:53:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:53:30,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 01:53:30,844 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:53:30,847 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:53:31,146 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-24 01:53:31,150 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:53:31,164 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:53:31,165 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-24 01:53:31,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:53:31 BoogieIcfgContainer [2024-11-24 01:53:31,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:53:31,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:53:31,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:53:31,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:53:31,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:53:30" (1/3) ... [2024-11-24 01:53:31,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e89da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:53:31, skipping insertion in model container [2024-11-24 01:53:31,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:30" (2/3) ... [2024-11-24 01:53:31,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e89da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:53:31, skipping insertion in model container [2024-11-24 01:53:31,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:53:31" (3/3) ... [2024-11-24 01:53:31,183 INFO L128 eAbstractionObserver]: Analyzing ICFG ifeqn3.c [2024-11-24 01:53:31,202 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:53:31,205 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ifeqn3.c that has 1 procedures, 23 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-24 01:53:31,291 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:53:31,311 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;@be0e68f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:53:31,311 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:53:31,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-24 01:53:31,326 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:31,327 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:31,327 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:31,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:31,336 INFO L85 PathProgramCache]: Analyzing trace with hash 145302482, now seen corresponding path program 1 times [2024-11-24 01:53:31,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:31,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826038969] [2024-11-24 01:53:31,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:31,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:31,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:31,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826038969] [2024-11-24 01:53:31,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826038969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:31,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:31,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:53:31,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029535572] [2024-11-24 01:53:31,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:31,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:53:31,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:31,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:53:31,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:53:31,576 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:31,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:31,591 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2024-11-24 01:53:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:53:31,594 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2024-11-24 01:53:31,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:31,603 INFO L225 Difference]: With dead ends: 42 [2024-11-24 01:53:31,603 INFO L226 Difference]: Without dead ends: 19 [2024-11-24 01:53:31,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:53:31,618 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:31,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:53:31,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-24 01:53:31,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-24 01:53:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:31,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-24 01:53:31,659 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2024-11-24 01:53:31,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:31,659 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-24 01:53:31,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:31,660 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-24 01:53:31,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-24 01:53:31,662 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:31,663 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:31,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:53:31,663 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:31,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash -782250204, now seen corresponding path program 1 times [2024-11-24 01:53:31,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:31,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207692577] [2024-11-24 01:53:31,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:31,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:31,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:31,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207692577] [2024-11-24 01:53:31,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207692577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:31,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:31,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:53:31,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689022867] [2024-11-24 01:53:31,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:31,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:53:31,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:31,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:53:31,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:53:31,979 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:32,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:32,119 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2024-11-24 01:53:32,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:53:32,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2024-11-24 01:53:32,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:32,121 INFO L225 Difference]: With dead ends: 45 [2024-11-24 01:53:32,121 INFO L226 Difference]: Without dead ends: 31 [2024-11-24 01:53:32,122 INFO L434 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 [2024-11-24 01:53:32,122 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:32,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 15 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:53:32,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-24 01:53:32,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2024-11-24 01:53:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 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) [2024-11-24 01:53:32,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-24 01:53:32,138 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2024-11-24 01:53:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:32,138 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-24 01:53:32,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-24 01:53:32,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-24 01:53:32,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:32,139 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:32,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:53:32,140 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:32,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:32,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1711486688, now seen corresponding path program 1 times [2024-11-24 01:53:32,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:32,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974028] [2024-11-24 01:53:32,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:32,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 01:53:32,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1598692623] [2024-11-24 01:53:32,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:32,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:32,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:32,226 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:32,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:53:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:32,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:53:32,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:32,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 01:53:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:53:32,523 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:53:32,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:32,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974028] [2024-11-24 01:53:32,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 01:53:32,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598692623] [2024-11-24 01:53:32,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598692623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:32,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:32,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:53:32,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383042959] [2024-11-24 01:53:32,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:32,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:53:32,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:32,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:53:32,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:53:32,527 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:32,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:32,632 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-11-24 01:53:32,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:53:32,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-24 01:53:32,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:32,636 INFO L225 Difference]: With dead ends: 39 [2024-11-24 01:53:32,636 INFO L226 Difference]: Without dead ends: 37 [2024-11-24 01:53:32,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:53:32,637 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:32,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 59 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:53:32,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-24 01:53:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2024-11-24 01:53:32,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:32,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-11-24 01:53:32,653 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 19 [2024-11-24 01:53:32,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:32,654 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-11-24 01:53:32,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-11-24 01:53:32,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-24 01:53:32,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:32,656 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:32,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 01:53:32,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:32,856 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:32,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:32,857 INFO L85 PathProgramCache]: Analyzing trace with hash -522323666, now seen corresponding path program 1 times [2024-11-24 01:53:32,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:32,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505834388] [2024-11-24 01:53:32,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:32,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:33,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:33,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505834388] [2024-11-24 01:53:33,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505834388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:53:33,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922901024] [2024-11-24 01:53:33,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:33,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:33,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:33,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:33,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:53:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:33,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:53:33,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:33,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:53:33,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:33,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922901024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:53:33,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:53:33,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-24 01:53:33,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249986650] [2024-11-24 01:53:33,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:53:33,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:53:33,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:33,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:53:33,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:53:33,493 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:33,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:33,761 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2024-11-24 01:53:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 01:53:33,762 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-24 01:53:33,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:33,763 INFO L225 Difference]: With dead ends: 70 [2024-11-24 01:53:33,765 INFO L226 Difference]: Without dead ends: 43 [2024-11-24 01:53:33,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:53:33,766 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:33,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 46 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:53:33,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-24 01:53:33,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2024-11-24 01:53:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:33,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-11-24 01:53:33,779 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 22 [2024-11-24 01:53:33,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:33,779 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-11-24 01:53:33,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:33,780 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-11-24 01:53:33,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-24 01:53:33,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:33,781 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:33,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:53:33,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:33,982 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:33,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1944101856, now seen corresponding path program 1 times [2024-11-24 01:53:33,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:33,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056170581] [2024-11-24 01:53:33,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:33,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 01:53:34,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078377921] [2024-11-24 01:53:34,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:34,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:34,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:34,172 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:34,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:53:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:34,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 01:53:34,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:34,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 01:53:34,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 27 treesize of output 11 [2024-11-24 01:53:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:53:34,487 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:53:35,037 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 21 treesize of output 19 [2024-11-24 01:53:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-24 01:53:35,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:35,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056170581] [2024-11-24 01:53:35,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 01:53:35,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078377921] [2024-11-24 01:53:35,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078377921] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:53:35,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:53:35,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2024-11-24 01:53:35,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965380133] [2024-11-24 01:53:35,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:53:35,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:53:35,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:35,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:53:35,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:53:35,077 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:35,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:35,519 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2024-11-24 01:53:35,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:53:35,521 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 25 [2024-11-24 01:53:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:35,523 INFO L225 Difference]: With dead ends: 92 [2024-11-24 01:53:35,523 INFO L226 Difference]: Without dead ends: 80 [2024-11-24 01:53:35,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:53:35,526 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 83 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:35,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 60 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:53:35,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-24 01:53:35,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 40. [2024-11-24 01:53:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:35,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2024-11-24 01:53:35,548 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2024-11-24 01:53:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:35,549 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2024-11-24 01:53:35,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:53:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2024-11-24 01:53:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-24 01:53:35,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:35,551 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:53:35,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:53:35,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:35,751 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:35,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:35,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2143239078, now seen corresponding path program 1 times [2024-11-24 01:53:35,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:35,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640684987] [2024-11-24 01:53:35,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:35,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 01:53:35,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864529778] [2024-11-24 01:53:35,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:35,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:35,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:35,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:35,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:53:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:36,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-24 01:53:36,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:36,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 01:53:36,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-24 01:53:36,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 01:53:36,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-24 01:53:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:36,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:53:37,471 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 48 treesize of output 44 [2024-11-24 01:53:37,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:53:37,492 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 75 treesize of output 73 [2024-11-24 01:53:38,338 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 17 treesize of output 15 [2024-11-24 01:53:38,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2024-11-24 01:53:38,436 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:53:38,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:38,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640684987] [2024-11-24 01:53:38,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 01:53:38,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864529778] [2024-11-24 01:53:38,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864529778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:53:38,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:53:38,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-24 01:53:38,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510502720] [2024-11-24 01:53:38,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:53:38,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-24 01:53:38,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:38,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-24 01:53:38,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2024-11-24 01:53:38,443 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 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) [2024-11-24 01:53:43,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:53:47,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:53:51,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:53:55,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:53:59,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:54:17,791 WARN L286 SmtUtils]: Spent 12.11s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:54:21,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:54:25,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:54:30,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:54:34,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:54:38,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:54:43,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:54:47,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:54:52,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:54:56,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:55:00,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:55:06,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:55:11,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-24 01:55:15,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-24 01:55:17,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-24 01:55:17,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:17,469 INFO L93 Difference]: Finished difference Result 274 states and 314 transitions. [2024-11-24 01:55:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-24 01:55:17,472 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 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 29 [2024-11-24 01:55:17,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:17,475 INFO L225 Difference]: With dead ends: 274 [2024-11-24 01:55:17,475 INFO L226 Difference]: Without dead ends: 241 [2024-11-24 01:55:17,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=687, Invalid=2393, Unknown=0, NotChecked=0, Total=3080 [2024-11-24 01:55:17,477 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 501 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 127 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:17,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 181 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 476 Invalid, 18 Unknown, 0 Unchecked, 76.7s Time] [2024-11-24 01:55:17,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-24 01:55:17,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 97. [2024-11-24 01:55:17,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.2916666666666667) internal successors, (124), 96 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:17,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 124 transitions. [2024-11-24 01:55:17,509 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 124 transitions. Word has length 29 [2024-11-24 01:55:17,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:17,509 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 124 transitions. [2024-11-24 01:55:17,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 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) [2024-11-24 01:55:17,510 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 124 transitions. [2024-11-24 01:55:17,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-24 01:55:17,511 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:17,511 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:17,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:17,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:17,712 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:17,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:17,712 INFO L85 PathProgramCache]: Analyzing trace with hash -642258900, now seen corresponding path program 2 times [2024-11-24 01:55:17,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:17,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790862110] [2024-11-24 01:55:17,713 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:55:17,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:17,748 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:55:17,749 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:55:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-24 01:55:18,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:18,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790862110] [2024-11-24 01:55:18,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790862110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:18,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946542204] [2024-11-24 01:55:18,023 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:55:18,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:18,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:18,026 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:18,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:55:18,109 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:55:18,109 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:55:18,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:55:18,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-24 01:55:18,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:55:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-24 01:55:18,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946542204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:55:18,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:55:18,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-24 01:55:18,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543214885] [2024-11-24 01:55:18,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:55:18,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:55:18,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:18,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:55:18,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:55:18,357 INFO L87 Difference]: Start difference. First operand 97 states and 124 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 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) [2024-11-24 01:55:18,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:18,611 INFO L93 Difference]: Finished difference Result 198 states and 237 transitions. [2024-11-24 01:55:18,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:55:18,612 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 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) Word has length 33 [2024-11-24 01:55:18,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:18,613 INFO L225 Difference]: With dead ends: 198 [2024-11-24 01:55:18,613 INFO L226 Difference]: Without dead ends: 128 [2024-11-24 01:55:18,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-24 01:55:18,614 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 80 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:18,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 44 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:55:18,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-24 01:55:18,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 105. [2024-11-24 01:55:18,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.2307692307692308) internal successors, (128), 104 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 128 transitions. [2024-11-24 01:55:18,645 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 128 transitions. Word has length 33 [2024-11-24 01:55:18,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:18,645 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 128 transitions. [2024-11-24 01:55:18,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 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) [2024-11-24 01:55:18,645 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 128 transitions. [2024-11-24 01:55:18,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-24 01:55:18,646 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:18,646 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:18,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:55:18,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:18,847 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:18,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:18,847 INFO L85 PathProgramCache]: Analyzing trace with hash 339142880, now seen corresponding path program 2 times [2024-11-24 01:55:18,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:18,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394361278] [2024-11-24 01:55:18,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:55:18,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:18,903 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:55:18,903 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:55:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:55:19,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:19,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394361278] [2024-11-24 01:55:19,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394361278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:19,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38436586] [2024-11-24 01:55:19,238 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:55:19,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:19,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:19,240 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:19,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:55:19,327 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:55:19,327 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:55:19,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 01:55:19,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:55:19,524 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:55:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 01:55:19,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38436586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:55:19,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:55:19,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 18 [2024-11-24 01:55:19,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963353460] [2024-11-24 01:55:19,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:55:19,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 01:55:19,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:19,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 01:55:19,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:55:19,656 INFO L87 Difference]: Start difference. First operand 105 states and 128 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 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) [2024-11-24 01:55:19,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:19,959 INFO L93 Difference]: Finished difference Result 201 states and 231 transitions. [2024-11-24 01:55:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:55:19,959 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 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 37 [2024-11-24 01:55:19,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:19,960 INFO L225 Difference]: With dead ends: 201 [2024-11-24 01:55:19,961 INFO L226 Difference]: Without dead ends: 155 [2024-11-24 01:55:19,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2024-11-24 01:55:19,962 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 121 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:19,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 59 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:55:19,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-24 01:55:19,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 118. [2024-11-24 01:55:19,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 117 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:19,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 138 transitions. [2024-11-24 01:55:19,991 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 138 transitions. Word has length 37 [2024-11-24 01:55:19,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:19,991 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 138 transitions. [2024-11-24 01:55:19,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 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) [2024-11-24 01:55:19,991 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 138 transitions. [2024-11-24 01:55:19,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 01:55:19,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:19,992 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:20,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:20,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-24 01:55:20,193 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:20,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1421977804, now seen corresponding path program 3 times [2024-11-24 01:55:20,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:20,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893330648] [2024-11-24 01:55:20,194 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:55:20,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:20,314 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-24 01:55:20,314 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:55:20,734 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 01:55:20,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:20,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893330648] [2024-11-24 01:55:20,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893330648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:20,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262902125] [2024-11-24 01:55:20,734 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:55:20,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:20,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:20,737 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:20,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:55:20,888 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-24 01:55:20,888 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:55:20,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 01:55:20,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 01:55:21,195 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:55:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-24 01:55:21,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262902125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:55:21,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:55:21,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-24 01:55:21,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263497178] [2024-11-24 01:55:21,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:55:21,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-24 01:55:21,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:21,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-24 01:55:21,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-11-24 01:55:21,422 INFO L87 Difference]: Start difference. First operand 118 states and 138 transitions. Second operand has 24 states, 24 states have (on average 2.625) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:22,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:22,307 INFO L93 Difference]: Finished difference Result 148 states and 167 transitions. [2024-11-24 01:55:22,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-24 01:55:22,308 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 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 [2024-11-24 01:55:22,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:22,309 INFO L225 Difference]: With dead ends: 148 [2024-11-24 01:55:22,309 INFO L226 Difference]: Without dead ends: 138 [2024-11-24 01:55:22,310 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=510, Invalid=1560, Unknown=0, NotChecked=0, Total=2070 [2024-11-24 01:55:22,311 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 188 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:22,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 73 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:55:22,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-24 01:55:22,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 117. [2024-11-24 01:55:22,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.1724137931034482) internal successors, (136), 116 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:22,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2024-11-24 01:55:22,349 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 38 [2024-11-24 01:55:22,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:22,349 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2024-11-24 01:55:22,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:55:22,351 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2024-11-24 01:55:22,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 01:55:22,352 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:22,352 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:22,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:22,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-24 01:55:22,553 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:22,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:22,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1066174548, now seen corresponding path program 4 times [2024-11-24 01:55:22,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:22,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553882095] [2024-11-24 01:55:22,554 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:55:22,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:22,736 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:55:22,736 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-24 01:55:22,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077556025] [2024-11-24 01:55:22,738 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 01:55:22,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:22,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:22,740 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:22,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:55:22,939 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 01:55:22,939 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:55:22,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-24 01:55:22,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:22,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 01:55:23,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-24 01:55:23,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:55:23,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-24 01:55:23,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 01:55:23,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-24 01:55:23,566 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:55:23,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-24 01:55:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:55:24,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:55:35,041 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 9 treesize of output 3 [2024-11-24 01:55:35,052 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 54 treesize of output 50 [2024-11-24 01:55:35,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:55:35,062 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 47 treesize of output 34 [2024-11-24 01:55:35,075 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 132 treesize of output 124 [2024-11-24 01:55:35,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:55:35,085 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 187 treesize of output 147 [2024-11-24 01:55:35,112 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 97 treesize of output 91 [2024-11-24 01:55:35,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 01:55:35,139 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 265 treesize of output 247 [2024-11-24 01:55:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:55:38,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:38,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553882095] [2024-11-24 01:55:38,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 01:55:38,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077556025] [2024-11-24 01:55:38,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077556025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:55:38,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:55:38,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2024-11-24 01:55:38,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823675764] [2024-11-24 01:55:38,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:55:38,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-24 01:55:38,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:38,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-24 01:55:38,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 01:55:38,818 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:56:08,192 WARN L286 SmtUtils]: Spent 28.27s on a formula simplification. DAG size of input: 133 DAG size of output: 57 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:56:23,009 WARN L286 SmtUtils]: Spent 12.37s on a formula simplification. DAG size of input: 221 DAG size of output: 68 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:57:56,172 WARN L286 SmtUtils]: Spent 1.52m on a formula simplification. DAG size of input: 192 DAG size of output: 94 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:59:50,524 WARN L286 SmtUtils]: Spent 1.87m on a formula simplification. DAG size of input: 215 DAG size of output: 103 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 01:59:51,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:51,900 INFO L93 Difference]: Finished difference Result 368 states and 426 transitions. [2024-11-24 01:59:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-24 01:59:51,901 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 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 [2024-11-24 01:59:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:51,902 INFO L225 Difference]: With dead ends: 368 [2024-11-24 01:59:51,902 INFO L226 Difference]: Without dead ends: 216 [2024-11-24 01:59:51,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 256.2s TimeCoverageRelationStatistics Valid=785, Invalid=3375, Unknown=0, NotChecked=0, Total=4160 [2024-11-24 01:59:51,904 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 525 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:59:51,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 267 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-24 01:59:51,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-24 01:59:51,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 97. [2024-11-24 01:59:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 96 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) [2024-11-24 01:59:51,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2024-11-24 01:59:51,944 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 39 [2024-11-24 01:59:51,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:51,944 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2024-11-24 01:59:51,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.0277777777777777) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:59:51,944 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2024-11-24 01:59:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-24 01:59:51,945 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:51,945 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:59:51,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 01:59:52,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 01:59:52,146 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:59:52,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:52,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1906901934, now seen corresponding path program 3 times [2024-11-24 01:59:52,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:59:52,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059685785] [2024-11-24 01:59:52,147 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:59:52,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:59:52,331 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-24 01:59:52,331 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:59:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:54,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:59:54,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059685785] [2024-11-24 01:59:54,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059685785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:59:54,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723362518] [2024-11-24 01:59:54,459 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 01:59:54,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:54,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:59:54,462 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:59:54,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:59:55,406 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-24 01:59:55,407 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:59:55,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-24 01:59:55,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:59:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:55,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:59:56,515 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:59:56,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723362518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:59:56,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:59:56,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 13] total 37 [2024-11-24 01:59:56,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169050609] [2024-11-24 01:59:56,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:59:56,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-24 01:59:56,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:59:56,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-24 01:59:56,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1093, Unknown=0, NotChecked=0, Total=1332 [2024-11-24 01:59:56,519 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand has 37 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 37 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:59:58,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:59:58,676 INFO L93 Difference]: Finished difference Result 214 states and 242 transitions. [2024-11-24 01:59:58,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-24 01:59:58,677 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 37 states have internal predecessors, (88), 0 states have call successors, (0), 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 40 [2024-11-24 01:59:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:59:58,680 INFO L225 Difference]: With dead ends: 214 [2024-11-24 01:59:58,680 INFO L226 Difference]: Without dead ends: 172 [2024-11-24 01:59:58,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=679, Invalid=2513, Unknown=0, NotChecked=0, Total=3192 [2024-11-24 01:59:58,682 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 411 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 01:59:58,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 140 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 01:59:58,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-24 01:59:58,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 126. [2024-11-24 01:59:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.168) internal successors, (146), 125 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:59:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 146 transitions. [2024-11-24 01:59:58,738 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 146 transitions. Word has length 40 [2024-11-24 01:59:58,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:59:58,739 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 146 transitions. [2024-11-24 01:59:58,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 37 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:59:58,739 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 146 transitions. [2024-11-24 01:59:58,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-24 01:59:58,742 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:59:58,742 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:59:58,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:59:58,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-24 01:59:58,943 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:59:58,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:59:58,943 INFO L85 PathProgramCache]: Analyzing trace with hash -541823450, now seen corresponding path program 5 times [2024-11-24 01:59:58,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:59:58,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948819679] [2024-11-24 01:59:58,943 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:59:58,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:59:59,057 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-24 01:59:59,057 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-24 01:59:59,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436417380] [2024-11-24 01:59:59,060 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 01:59:59,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:59:59,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:59:59,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:59:59,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a148d5f-57bf-4b35-9a78-3b8f66e1277e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:59:59,925 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-24 01:59:59,925 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:59:59,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-24 01:59:59,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:59:59,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 02:00:00,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-24 02:00:00,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:00:00,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-24 02:00:00,278 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:00:00,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-24 02:00:00,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-24 02:00:00,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-24 02:00:00,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:00:00,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2024-11-24 02:00:00,764 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 02:00:00,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2024-11-24 02:00:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 02:00:00,976 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 02:00:27,609 WARN L286 SmtUtils]: Spent 12.04s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:00:35,732 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:00:46,111 WARN L286 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 29 DAG size of output: 1 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:01:22,537 WARN L286 SmtUtils]: Spent 33.81s on a formula simplification. DAG size of input: 103 DAG size of output: 98 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 02:01:38,624 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:01:58,883 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:02:10,920 WARN L286 SmtUtils]: Spent 12.04s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:02:41,485 WARN L286 SmtUtils]: Spent 20.44s on a formula simplification that was a NOOP. DAG size: 98 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 02:03:02,358 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:03:10,687 WARN L286 SmtUtils]: Spent 8.33s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:03:47,016 WARN L286 SmtUtils]: Spent 28.86s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 02:04:07,399 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:04:15,418 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:04:31,574 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:04:39,596 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:05:17,469 WARN L286 SmtUtils]: Spent 28.53s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-24 02:05:33,593 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:05:45,620 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:05:57,638 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:06:13,789 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:06:25,808 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:06:41,912 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:06:49,932 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 02:07:06,787 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)