./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_25x0-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_25x0-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB --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 8ec6e434f91e1569e6fad03794f07a751e615694ef413649174052dcc7984987 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:49:33,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:49:33,713 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 19:49:33,719 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:49:33,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:49:33,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:49:33,749 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:49:33,750 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:49:33,750 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:49:33,750 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:49:33,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:49:33,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:49:33,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:49:33,751 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:49:33,752 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:49:33,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:49:33,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:49:33,753 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 19:49:33,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:49:33,754 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 19:49:33,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:49:33,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:49:33,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:49:33,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:49:33,755 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 19:49:33,755 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:49:33,755 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:49:33,755 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:49:33,756 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:49:33,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:49:33,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:49:33,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:49:33,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:33,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:49:33,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:49:33,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:49:33,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:49:33,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:33,756 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:49:33,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:49:33,757 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:49:33,757 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:49:33,757 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:49:33,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:49:33,757 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:49:33,757 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:49:33,757 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:49:33,757 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:49:33,757 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_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 8ec6e434f91e1569e6fad03794f07a751e615694ef413649174052dcc7984987 [2024-11-27 19:49:34,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:49:34,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:49:34,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:49:34,100 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:49:34,101 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:49:34,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursive-simple/sum_25x0-1.c [2024-11-27 19:49:37,227 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/data/5df643936/d0e4a942e018481bb2ff67aa61815113/FLAG6b1a7db86 [2024-11-27 19:49:37,484 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:49:37,485 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/sv-benchmarks/c/recursive-simple/sum_25x0-1.c [2024-11-27 19:49:37,492 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/data/5df643936/d0e4a942e018481bb2ff67aa61815113/FLAG6b1a7db86 [2024-11-27 19:49:37,816 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/data/5df643936/d0e4a942e018481bb2ff67aa61815113 [2024-11-27 19:49:37,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:49:37,819 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:49:37,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:49:37,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:49:37,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:49:37,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:49:37" (1/1) ... [2024-11-27 19:49:37,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52db201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:37, skipping insertion in model container [2024-11-27 19:49:37,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:49:37" (1/1) ... [2024-11-27 19:49:37,842 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:49:38,011 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_ae47823b-5413-47c3-a18e-c9075a5d08e0/sv-benchmarks/c/recursive-simple/sum_25x0-1.c[481,494] [2024-11-27 19:49:38,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:49:38,025 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:49:38,038 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_ae47823b-5413-47c3-a18e-c9075a5d08e0/sv-benchmarks/c/recursive-simple/sum_25x0-1.c[481,494] [2024-11-27 19:49:38,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:49:38,052 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:49:38,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38 WrapperNode [2024-11-27 19:49:38,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:49:38,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:49:38,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:49:38,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:49:38,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38" (1/1) ... [2024-11-27 19:49:38,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38" (1/1) ... [2024-11-27 19:49:38,086 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-11-27 19:49:38,087 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:49:38,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:49:38,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:49:38,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:49:38,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38" (1/1) ... [2024-11-27 19:49:38,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38" (1/1) ... [2024-11-27 19:49:38,095 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38" (1/1) ... [2024-11-27 19:49:38,103 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 19:49:38,103 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38" (1/1) ... [2024-11-27 19:49:38,103 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38" (1/1) ... [2024-11-27 19:49:38,105 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38" (1/1) ... [2024-11-27 19:49:38,106 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38" (1/1) ... [2024-11-27 19:49:38,107 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38" (1/1) ... [2024-11-27 19:49:38,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38" (1/1) ... [2024-11-27 19:49:38,108 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38" (1/1) ... [2024-11-27 19:49:38,110 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:49:38,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:49:38,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:49:38,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:49:38,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38" (1/1) ... [2024-11-27 19:49:38,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:38,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:38,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:49:38,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:49:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:49:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:49:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:49:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-11-27 19:49:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-11-27 19:49:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:49:38,242 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:49:38,244 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:49:38,350 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-27 19:49:38,350 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:49:38,360 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:49:38,360 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 19:49:38,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:49:38 BoogieIcfgContainer [2024-11-27 19:49:38,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:49:38,364 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:49:38,364 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:49:38,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:49:38,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:49:37" (1/3) ... [2024-11-27 19:49:38,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ae67d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:49:38, skipping insertion in model container [2024-11-27 19:49:38,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:38" (2/3) ... [2024-11-27 19:49:38,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ae67d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:49:38, skipping insertion in model container [2024-11-27 19:49:38,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:49:38" (3/3) ... [2024-11-27 19:49:38,372 INFO L128 eAbstractionObserver]: Analyzing ICFG sum_25x0-1.c [2024-11-27 19:49:38,389 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:49:38,391 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sum_25x0-1.c that has 2 procedures, 16 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 19:49:38,450 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:49:38,470 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;@63bb7348, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:49:38,471 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:49:38,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-27 19:49:38,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-27 19:49:38,485 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:38,485 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:38,486 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:38,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:38,494 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2024-11-27 19:49:38,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:38,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498756362] [2024-11-27 19:49:38,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:38,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:49:38,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:38,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498756362] [2024-11-27 19:49:38,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498756362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:38,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:38,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 19:49:38,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126604832] [2024-11-27 19:49:38,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:38,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 19:49:38,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:38,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 19:49:38,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:38,886 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 19:49:38,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:38,952 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-27 19:49:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 19:49:38,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-27 19:49:38,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:38,962 INFO L225 Difference]: With dead ends: 25 [2024-11-27 19:49:38,962 INFO L226 Difference]: Without dead ends: 15 [2024-11-27 19:49:38,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 19:49:38,969 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:38,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:38,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-27 19:49:39,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-27 19:49:39,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 19:49:39,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-27 19:49:39,010 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2024-11-27 19:49:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:39,010 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-27 19:49:39,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 19:49:39,010 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-27 19:49:39,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-27 19:49:39,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:39,012 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:39,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 19:49:39,012 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:39,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:39,013 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2024-11-27 19:49:39,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:39,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035672507] [2024-11-27 19:49:39,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:39,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 19:49:39,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:39,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035672507] [2024-11-27 19:49:39,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035672507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:39,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365826384] [2024-11-27 19:49:39,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:39,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:39,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:39,182 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:39,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:49:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:39,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 19:49:39,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 19:49:39,399 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:39,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 19:49:39,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365826384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:49:39,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:49:39,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2024-11-27 19:49:39,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433536438] [2024-11-27 19:49:39,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:39,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 19:49:39,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:39,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 19:49:39,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:49:39,702 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 19:49:39,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:39,774 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-11-27 19:49:39,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:49:39,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 16 [2024-11-27 19:49:39,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:39,776 INFO L225 Difference]: With dead ends: 22 [2024-11-27 19:49:39,776 INFO L226 Difference]: Without dead ends: 18 [2024-11-27 19:49:39,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-27 19:49:39,777 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:39,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 30 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:39,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-27 19:49:39,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-27 19:49:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-27 19:49:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-27 19:49:39,787 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2024-11-27 19:49:39,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:39,787 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-27 19:49:39,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 19:49:39,788 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-27 19:49:39,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-27 19:49:39,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:39,789 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:39,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 19:49:39,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:39,989 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:39,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:39,990 INFO L85 PathProgramCache]: Analyzing trace with hash -41010676, now seen corresponding path program 2 times [2024-11-27 19:49:39,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:39,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135684361] [2024-11-27 19:49:39,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 19:49:39,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:40,030 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 19:49:40,030 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 19:49:40,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:40,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135684361] [2024-11-27 19:49:40,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135684361] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:40,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819957114] [2024-11-27 19:49:40,267 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 19:49:40,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:40,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:40,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:40,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:49:40,333 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 19:49:40,334 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:40,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 19:49:40,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 19:49:40,395 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 19:49:40,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819957114] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:49:40,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:49:40,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 12 [2024-11-27 19:49:40,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504908312] [2024-11-27 19:49:40,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:40,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 19:49:40,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:40,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 19:49:40,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:49:40,912 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 12 states, 10 states have (on average 2.2) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-27 19:49:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:41,004 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-27 19:49:41,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 19:49:41,005 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 22 [2024-11-27 19:49:41,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:41,006 INFO L225 Difference]: With dead ends: 25 [2024-11-27 19:49:41,006 INFO L226 Difference]: Without dead ends: 21 [2024-11-27 19:49:41,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-27 19:49:41,007 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:41,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 48 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:49:41,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-27 19:49:41,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-27 19:49:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 19:49:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-27 19:49:41,016 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2024-11-27 19:49:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:41,016 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-27 19:49:41,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-27 19:49:41,016 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-27 19:49:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-27 19:49:41,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:41,020 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:41,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 19:49:41,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-27 19:49:41,224 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:41,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:41,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 3 times [2024-11-27 19:49:41,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:41,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782585134] [2024-11-27 19:49:41,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 19:49:41,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:41,249 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 19:49:41,249 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 19:49:41,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:41,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782585134] [2024-11-27 19:49:41,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782585134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:41,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780730749] [2024-11-27 19:49:41,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 19:49:41,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:41,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:41,472 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:41,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 19:49:41,532 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 19:49:41,532 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:41,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 19:49:41,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 19:49:41,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:49:42,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780730749] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:49:42,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:49:42,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 11] total 15 [2024-11-27 19:49:42,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432808847] [2024-11-27 19:49:42,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:42,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 19:49:42,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:42,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 19:49:42,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-27 19:49:42,376 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 15 states, 12 states have (on average 2.25) internal successors, (27), 15 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-27 19:49:42,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:42,568 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-11-27 19:49:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 19:49:42,569 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.25) internal successors, (27), 15 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) Word has length 28 [2024-11-27 19:49:42,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:42,569 INFO L225 Difference]: With dead ends: 28 [2024-11-27 19:49:42,570 INFO L226 Difference]: Without dead ends: 24 [2024-11-27 19:49:42,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2024-11-27 19:49:42,571 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:42,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 58 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:49:42,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-27 19:49:42,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-27 19:49:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-27 19:49:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-11-27 19:49:42,577 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 28 [2024-11-27 19:49:42,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:42,577 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-27 19:49:42,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.25) internal successors, (27), 15 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-27 19:49:42,577 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-11-27 19:49:42,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-27 19:49:42,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:42,578 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:42,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 19:49:42,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:42,779 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:42,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:42,780 INFO L85 PathProgramCache]: Analyzing trace with hash 371264716, now seen corresponding path program 4 times [2024-11-27 19:49:42,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:42,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882739251] [2024-11-27 19:49:42,780 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 19:49:42,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:42,795 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 19:49:42,795 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 19:49:43,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:43,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882739251] [2024-11-27 19:49:43,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882739251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:43,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777440690] [2024-11-27 19:49:43,009 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 19:49:43,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:43,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:43,014 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:43,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 19:49:43,072 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 19:49:43,072 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:43,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 19:49:43,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-27 19:49:43,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 19:49:44,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777440690] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:49:44,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:49:44,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 13] total 16 [2024-11-27 19:49:44,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579657091] [2024-11-27 19:49:44,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:44,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 19:49:44,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:44,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 19:49:44,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-27 19:49:44,095 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 16 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (11), 5 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-27 19:49:44,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:44,196 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-11-27 19:49:44,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 19:49:44,197 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 16 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (11), 5 states have call predecessors, (11), 8 states have call successors, (11) Word has length 34 [2024-11-27 19:49:44,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:44,198 INFO L225 Difference]: With dead ends: 31 [2024-11-27 19:49:44,198 INFO L226 Difference]: Without dead ends: 27 [2024-11-27 19:49:44,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-11-27 19:49:44,199 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:44,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 67 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:49:44,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-27 19:49:44,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-27 19:49:44,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 19:49:44,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-11-27 19:49:44,209 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 34 [2024-11-27 19:49:44,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:44,210 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-11-27 19:49:44,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.142857142857143) internal successors, (30), 16 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (11), 5 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-27 19:49:44,210 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-11-27 19:49:44,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-27 19:49:44,211 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:44,211 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:44,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 19:49:44,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:44,415 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:44,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:44,416 INFO L85 PathProgramCache]: Analyzing trace with hash -886339242, now seen corresponding path program 5 times [2024-11-27 19:49:44,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:44,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659374280] [2024-11-27 19:49:44,417 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 19:49:44,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:44,441 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-27 19:49:44,441 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 19:49:44,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:44,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659374280] [2024-11-27 19:49:44,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659374280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:44,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804177997] [2024-11-27 19:49:44,675 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 19:49:44,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:44,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:44,677 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:44,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 19:49:44,755 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-27 19:49:44,755 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:44,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 19:49:44,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:44,824 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 19:49:44,825 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 19:49:46,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804177997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:49:46,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:49:46,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 17 [2024-11-27 19:49:46,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11945487] [2024-11-27 19:49:46,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:46,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 19:49:46,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:46,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 19:49:46,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-11-27 19:49:46,324 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 17 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (12), 6 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-27 19:49:46,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:46,451 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2024-11-27 19:49:46,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 19:49:46,452 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 17 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (12), 6 states have call predecessors, (12), 8 states have call successors, (12) Word has length 40 [2024-11-27 19:49:46,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:46,453 INFO L225 Difference]: With dead ends: 34 [2024-11-27 19:49:46,453 INFO L226 Difference]: Without dead ends: 30 [2024-11-27 19:49:46,454 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2024-11-27 19:49:46,454 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 47 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:46,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 61 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:49:46,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-27 19:49:46,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-27 19:49:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 19:49:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2024-11-27 19:49:46,461 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 40 [2024-11-27 19:49:46,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:46,461 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2024-11-27 19:49:46,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 17 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (12), 6 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-27 19:49:46,462 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2024-11-27 19:49:46,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-27 19:49:46,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:46,463 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:46,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 19:49:46,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:46,664 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:46,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:46,664 INFO L85 PathProgramCache]: Analyzing trace with hash -918712436, now seen corresponding path program 6 times [2024-11-27 19:49:46,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:46,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032303595] [2024-11-27 19:49:46,664 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 19:49:46,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:46,684 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-27 19:49:46,684 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:46,958 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 5 proven. 63 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-27 19:49:46,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:46,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032303595] [2024-11-27 19:49:46,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032303595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:46,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074015534] [2024-11-27 19:49:46,959 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 19:49:46,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:46,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:46,966 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:46,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 19:49:47,046 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-27 19:49:47,046 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:47,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 19:49:47,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-27 19:49:47,147 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-27 19:49:49,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074015534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:49:49,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:49:49,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 17] total 21 [2024-11-27 19:49:49,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374408718] [2024-11-27 19:49:49,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:49,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 19:49:49,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:49,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 19:49:49,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-27 19:49:49,171 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 21 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 21 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (15), 7 states have call predecessors, (15), 10 states have call successors, (15) [2024-11-27 19:49:49,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:49,405 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2024-11-27 19:49:49,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 19:49:49,405 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 21 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (15), 7 states have call predecessors, (15), 10 states have call successors, (15) Word has length 46 [2024-11-27 19:49:49,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:49,407 INFO L225 Difference]: With dead ends: 37 [2024-11-27 19:49:49,407 INFO L226 Difference]: Without dead ends: 33 [2024-11-27 19:49:49,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 80 SyntacticMatches, 9 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=557, Unknown=0, NotChecked=0, Total=812 [2024-11-27 19:49:49,409 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 44 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:49,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 76 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:49:49,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-27 19:49:49,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-27 19:49:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 19:49:49,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-11-27 19:49:49,415 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 46 [2024-11-27 19:49:49,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:49,415 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-11-27 19:49:49,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 21 states have internal predecessors, (39), 10 states have call successors, (10), 1 states have call predecessors, (10), 7 states have return successors, (15), 7 states have call predecessors, (15), 10 states have call successors, (15) [2024-11-27 19:49:49,416 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-11-27 19:49:49,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-27 19:49:49,417 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:49,417 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:49,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 19:49:49,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:49,617 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:49,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:49,618 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 7 times [2024-11-27 19:49:49,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:49,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998597056] [2024-11-27 19:49:49,618 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 19:49:49,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-27 19:49:49,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:49,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998597056] [2024-11-27 19:49:49,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998597056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:49,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387443803] [2024-11-27 19:49:49,847 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 19:49:49,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:49,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:49,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:49,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 19:49:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:49,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-27 19:49:49,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-27 19:49:50,021 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-27 19:49:52,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387443803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:49:52,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:49:52,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 21 [2024-11-27 19:49:52,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746776123] [2024-11-27 19:49:52,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:52,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 19:49:52,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:52,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 19:49:52,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2024-11-27 19:49:52,664 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 21 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 21 states have internal predecessors, (40), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-27 19:49:52,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:52,793 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-11-27 19:49:52,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 19:49:52,793 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 21 states have internal predecessors, (40), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) Word has length 52 [2024-11-27 19:49:52,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:52,794 INFO L225 Difference]: With dead ends: 40 [2024-11-27 19:49:52,794 INFO L226 Difference]: Without dead ends: 36 [2024-11-27 19:49:52,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 94 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2024-11-27 19:49:52,796 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:52,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 85 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:49:52,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-27 19:49:52,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-27 19:49:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (10), 9 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-27 19:49:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-11-27 19:49:52,801 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 52 [2024-11-27 19:49:52,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:52,802 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-11-27 19:49:52,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 21 states have internal predecessors, (40), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (16), 8 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-27 19:49:52,802 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-11-27 19:49:52,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-27 19:49:52,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:52,803 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:52,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 19:49:53,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:53,007 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:53,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:53,008 INFO L85 PathProgramCache]: Analyzing trace with hash -960511412, now seen corresponding path program 8 times [2024-11-27 19:49:53,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:53,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654072002] [2024-11-27 19:49:53,008 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 19:49:53,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:53,025 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 19:49:53,025 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 8 proven. 100 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-27 19:49:53,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:53,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654072002] [2024-11-27 19:49:53,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654072002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:53,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115228077] [2024-11-27 19:49:53,297 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 19:49:53,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:53,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:53,299 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:53,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 19:49:53,427 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 19:49:53,428 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:53,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 19:49:53,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-27 19:49:53,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:49:57,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115228077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:49:57,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:49:57,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 21] total 24 [2024-11-27 19:49:57,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109678378] [2024-11-27 19:49:57,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:57,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 19:49:57,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:57,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 19:49:57,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2024-11-27 19:49:57,439 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 24 states, 22 states have (on average 2.090909090909091) internal successors, (46), 24 states have internal predecessors, (46), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-27 19:49:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:57,621 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2024-11-27 19:49:57,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 19:49:57,622 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.090909090909091) internal successors, (46), 24 states have internal predecessors, (46), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) Word has length 58 [2024-11-27 19:49:57,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:57,623 INFO L225 Difference]: With dead ends: 43 [2024-11-27 19:49:57,623 INFO L226 Difference]: Without dead ends: 39 [2024-11-27 19:49:57,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 104 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-11-27 19:49:57,624 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:57,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 77 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:49:57,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-27 19:49:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-27 19:49:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-27 19:49:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-11-27 19:49:57,642 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 58 [2024-11-27 19:49:57,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:57,642 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-11-27 19:49:57,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.090909090909091) internal successors, (46), 24 states have internal predecessors, (46), 11 states have call successors, (11), 1 states have call predecessors, (11), 9 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-27 19:49:57,642 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-11-27 19:49:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 19:49:57,643 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:57,643 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:57,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 19:49:57,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:57,845 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:57,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:57,846 INFO L85 PathProgramCache]: Analyzing trace with hash -366706730, now seen corresponding path program 9 times [2024-11-27 19:49:57,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:57,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517843969] [2024-11-27 19:49:57,846 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 19:49:57,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:57,876 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-27 19:49:57,876 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 8 proven. 135 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-27 19:49:58,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:58,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517843969] [2024-11-27 19:49:58,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517843969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:58,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395735300] [2024-11-27 19:49:58,292 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 19:49:58,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:58,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:58,295 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:58,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 19:49:58,512 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-27 19:49:58,512 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:58,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 19:49:58,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-27 19:49:58,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-27 19:50:03,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395735300] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:03,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:03,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 23] total 27 [2024-11-27 19:50:03,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740304335] [2024-11-27 19:50:03,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:03,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 19:50:03,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:03,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 19:50:03,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2024-11-27 19:50:03,703 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 27 states, 24 states have (on average 2.125) internal successors, (51), 27 states have internal predecessors, (51), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (21), 10 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-27 19:50:04,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:04,030 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2024-11-27 19:50:04,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 19:50:04,031 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 2.125) internal successors, (51), 27 states have internal predecessors, (51), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (21), 10 states have call predecessors, (21), 13 states have call successors, (21) Word has length 64 [2024-11-27 19:50:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:04,032 INFO L225 Difference]: With dead ends: 46 [2024-11-27 19:50:04,032 INFO L226 Difference]: Without dead ends: 42 [2024-11-27 19:50:04,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 113 SyntacticMatches, 12 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 19:50:04,033 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 47 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:04,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 84 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:04,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-27 19:50:04,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-27 19:50:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (12), 11 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 19:50:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-11-27 19:50:04,040 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 64 [2024-11-27 19:50:04,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:04,040 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-11-27 19:50:04,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 2.125) internal successors, (51), 27 states have internal predecessors, (51), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (21), 10 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-27 19:50:04,040 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-11-27 19:50:04,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 19:50:04,041 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:04,041 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:04,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:04,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 19:50:04,245 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:04,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:04,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1719425780, now seen corresponding path program 10 times [2024-11-27 19:50:04,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:04,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82711082] [2024-11-27 19:50:04,246 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 19:50:04,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:04,270 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 19:50:04,270 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-27 19:50:04,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:04,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82711082] [2024-11-27 19:50:04,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82711082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:04,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126095027] [2024-11-27 19:50:04,732 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 19:50:04,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:04,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:04,734 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:04,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 19:50:04,962 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 19:50:04,963 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:04,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 19:50:04,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-27 19:50:05,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-27 19:50:11,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126095027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:11,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:11,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 25] total 28 [2024-11-27 19:50:11,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659233379] [2024-11-27 19:50:11,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:11,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 19:50:11,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:11,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 19:50:11,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-11-27 19:50:11,108 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 28 states, 26 states have (on average 2.076923076923077) internal successors, (54), 28 states have internal predecessors, (54), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) [2024-11-27 19:50:11,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:11,293 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2024-11-27 19:50:11,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 19:50:11,294 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.076923076923077) internal successors, (54), 28 states have internal predecessors, (54), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) Word has length 70 [2024-11-27 19:50:11,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:11,297 INFO L225 Difference]: With dead ends: 49 [2024-11-27 19:50:11,297 INFO L226 Difference]: Without dead ends: 45 [2024-11-27 19:50:11,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 11 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=448, Invalid=958, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 19:50:11,299 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 25 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:11,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 92 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:11,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-27 19:50:11,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-27 19:50:11,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 19:50:11,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-11-27 19:50:11,311 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 70 [2024-11-27 19:50:11,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:11,314 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-11-27 19:50:11,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.076923076923077) internal successors, (54), 28 states have internal predecessors, (54), 14 states have call successors, (14), 1 states have call predecessors, (14), 11 states have return successors, (23), 11 states have call predecessors, (23), 14 states have call successors, (23) [2024-11-27 19:50:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-11-27 19:50:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 19:50:11,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:11,315 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:11,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-27 19:50:11,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 19:50:11,516 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:11,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:11,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1354232598, now seen corresponding path program 11 times [2024-11-27 19:50:11,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:11,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819352470] [2024-11-27 19:50:11,516 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 19:50:11,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:11,548 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-27 19:50:11,548 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-27 19:50:11,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:11,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819352470] [2024-11-27 19:50:11,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819352470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:11,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174821608] [2024-11-27 19:50:11,910 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 19:50:11,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:11,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:11,912 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:11,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 19:50:12,211 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-27 19:50:12,212 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:12,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 19:50:12,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-27 19:50:12,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-27 19:50:20,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174821608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:20,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:20,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 29 [2024-11-27 19:50:20,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952498613] [2024-11-27 19:50:20,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:20,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 19:50:20,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:20,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 19:50:20,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2024-11-27 19:50:20,067 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 29 states, 27 states have (on average 2.074074074074074) internal successors, (56), 29 states have internal predecessors, (56), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (24), 12 states have call predecessors, (24), 14 states have call successors, (24) [2024-11-27 19:50:20,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:20,260 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2024-11-27 19:50:20,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 19:50:20,261 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.074074074074074) internal successors, (56), 29 states have internal predecessors, (56), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (24), 12 states have call predecessors, (24), 14 states have call successors, (24) Word has length 76 [2024-11-27 19:50:20,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:20,262 INFO L225 Difference]: With dead ends: 52 [2024-11-27 19:50:20,262 INFO L226 Difference]: Without dead ends: 48 [2024-11-27 19:50:20,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 138 SyntacticMatches, 12 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=498, Invalid=1062, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 19:50:20,263 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 26 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:20,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 106 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:20,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-27 19:50:20,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-27 19:50:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (14), 13 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-27 19:50:20,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-11-27 19:50:20,270 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 76 [2024-11-27 19:50:20,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:20,270 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-11-27 19:50:20,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.074074074074074) internal successors, (56), 29 states have internal predecessors, (56), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (24), 12 states have call predecessors, (24), 14 states have call successors, (24) [2024-11-27 19:50:20,270 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-11-27 19:50:20,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-27 19:50:20,271 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:20,271 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:20,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 19:50:20,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 19:50:20,472 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:20,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1734686668, now seen corresponding path program 12 times [2024-11-27 19:50:20,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:20,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729743632] [2024-11-27 19:50:20,472 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 19:50:20,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:20,503 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-27 19:50:20,503 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 11 proven. 234 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2024-11-27 19:50:20,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:20,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729743632] [2024-11-27 19:50:20,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729743632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:20,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588385196] [2024-11-27 19:50:20,935 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 19:50:20,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:20,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:20,938 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:20,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 19:50:21,348 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-27 19:50:21,348 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:21,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-27 19:50:21,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-27 19:50:21,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-27 19:50:31,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588385196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:31,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:31,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 29] total 33 [2024-11-27 19:50:31,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562870064] [2024-11-27 19:50:31,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:31,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-27 19:50:31,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:31,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-27 19:50:31,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 19:50:31,347 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 33 states, 30 states have (on average 2.1) internal successors, (63), 33 states have internal predecessors, (63), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (27), 13 states have call predecessors, (27), 16 states have call successors, (27) [2024-11-27 19:50:31,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:31,733 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2024-11-27 19:50:31,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 19:50:31,734 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.1) internal successors, (63), 33 states have internal predecessors, (63), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (27), 13 states have call predecessors, (27), 16 states have call successors, (27) Word has length 82 [2024-11-27 19:50:31,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:31,737 INFO L225 Difference]: With dead ends: 55 [2024-11-27 19:50:31,737 INFO L226 Difference]: Without dead ends: 51 [2024-11-27 19:50:31,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 146 SyntacticMatches, 15 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=693, Invalid=1469, Unknown=0, NotChecked=0, Total=2162 [2024-11-27 19:50:31,738 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 191 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:31,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 101 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:31,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-27 19:50:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-27 19:50:31,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (15), 14 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-27 19:50:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2024-11-27 19:50:31,751 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 82 [2024-11-27 19:50:31,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:31,751 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2024-11-27 19:50:31,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.1) internal successors, (63), 33 states have internal predecessors, (63), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (27), 13 states have call predecessors, (27), 16 states have call successors, (27) [2024-11-27 19:50:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2024-11-27 19:50:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-27 19:50:31,753 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:31,753 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:31,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-27 19:50:31,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 19:50:31,953 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:31,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:31,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1433749930, now seen corresponding path program 13 times [2024-11-27 19:50:31,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:31,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63261244] [2024-11-27 19:50:31,954 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 19:50:31,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-27 19:50:32,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:32,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63261244] [2024-11-27 19:50:32,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63261244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:32,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020222693] [2024-11-27 19:50:32,370 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 19:50:32,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:32,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:32,372 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:32,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 19:50:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:32,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-27 19:50:32,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-27 19:50:33,020 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-27 19:50:45,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020222693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:45,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:45,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 33 [2024-11-27 19:50:45,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140303995] [2024-11-27 19:50:45,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:45,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-27 19:50:45,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:45,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-27 19:50:45,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=782, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 19:50:45,968 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 33 states, 31 states have (on average 2.064516129032258) internal successors, (64), 33 states have internal predecessors, (64), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (28), 14 states have call predecessors, (28), 16 states have call successors, (28) [2024-11-27 19:50:46,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:46,221 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2024-11-27 19:50:46,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 19:50:46,221 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.064516129032258) internal successors, (64), 33 states have internal predecessors, (64), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (28), 14 states have call predecessors, (28), 16 states have call successors, (28) Word has length 88 [2024-11-27 19:50:46,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:46,222 INFO L225 Difference]: With dead ends: 58 [2024-11-27 19:50:46,222 INFO L226 Difference]: Without dead ends: 54 [2024-11-27 19:50:46,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 160 SyntacticMatches, 14 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=664, Invalid=1406, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 19:50:46,223 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 64 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:46,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 102 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:46,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-27 19:50:46,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-27 19:50:46,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (16), 15 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 19:50:46,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2024-11-27 19:50:46,230 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 88 [2024-11-27 19:50:46,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:46,230 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2024-11-27 19:50:46,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.064516129032258) internal successors, (64), 33 states have internal predecessors, (64), 16 states have call successors, (16), 1 states have call predecessors, (16), 14 states have return successors, (28), 14 states have call predecessors, (28), 16 states have call successors, (28) [2024-11-27 19:50:46,230 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2024-11-27 19:50:46,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-27 19:50:46,231 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:46,231 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:46,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 19:50:46,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 19:50:46,435 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:46,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:46,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1321174388, now seen corresponding path program 14 times [2024-11-27 19:50:46,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:46,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241409329] [2024-11-27 19:50:46,436 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 19:50:46,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:46,463 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 19:50:46,464 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 14 proven. 301 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-27 19:50:46,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:46,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241409329] [2024-11-27 19:50:46,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241409329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:46,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128871625] [2024-11-27 19:50:46,917 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 19:50:46,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:46,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:46,920 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:46,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 19:50:47,583 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 19:50:47,583 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:47,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 19:50:47,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:47,707 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-27 19:50:47,707 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-27 19:51:04,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128871625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:51:04,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:51:04,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 33] total 36 [2024-11-27 19:51:04,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875493685] [2024-11-27 19:51:04,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:51:04,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-27 19:51:04,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:04,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-27 19:51:04,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2024-11-27 19:51:04,275 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 36 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 36 states have internal predecessors, (70), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (30), 15 states have call predecessors, (30), 17 states have call successors, (30) [2024-11-27 19:51:04,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:04,619 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2024-11-27 19:51:04,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 19:51:04,620 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 36 states have internal predecessors, (70), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (30), 15 states have call predecessors, (30), 17 states have call successors, (30) Word has length 94 [2024-11-27 19:51:04,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:04,621 INFO L225 Difference]: With dead ends: 61 [2024-11-27 19:51:04,621 INFO L226 Difference]: Without dead ends: 57 [2024-11-27 19:51:04,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 170 SyntacticMatches, 15 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=788, Invalid=1662, Unknown=0, NotChecked=0, Total=2450 [2024-11-27 19:51:04,623 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 63 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:04,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 128 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:04,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-27 19:51:04,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-27 19:51:04,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 19:51:04,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-11-27 19:51:04,637 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 94 [2024-11-27 19:51:04,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:04,637 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-11-27 19:51:04,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 36 states have internal predecessors, (70), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (30), 15 states have call predecessors, (30), 17 states have call successors, (30) [2024-11-27 19:51:04,637 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-11-27 19:51:04,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-27 19:51:04,639 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:04,639 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:04,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-27 19:51:04,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 19:51:04,847 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:04,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:04,848 INFO L85 PathProgramCache]: Analyzing trace with hash 415287702, now seen corresponding path program 15 times [2024-11-27 19:51:04,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:04,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336285254] [2024-11-27 19:51:04,848 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 19:51:04,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:04,892 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-27 19:51:04,892 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:51:05,549 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 14 proven. 360 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2024-11-27 19:51:05,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:05,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336285254] [2024-11-27 19:51:05,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336285254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:05,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719806959] [2024-11-27 19:51:05,549 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 19:51:05,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:05,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:05,554 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:05,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-27 19:51:06,489 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-27 19:51:06,489 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:51:06,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-27 19:51:06,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-27 19:51:06,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-27 19:51:27,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719806959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:51:27,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:51:27,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 35] total 39 [2024-11-27 19:51:27,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869966927] [2024-11-27 19:51:27,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:51:27,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-27 19:51:27,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:27,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-27 19:51:27,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 19:51:27,631 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 39 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 39 states have internal predecessors, (75), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (33), 16 states have call predecessors, (33), 19 states have call successors, (33) [2024-11-27 19:51:28,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:28,201 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2024-11-27 19:51:28,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 19:51:28,202 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 39 states have internal predecessors, (75), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (33), 16 states have call predecessors, (33), 19 states have call successors, (33) Word has length 100 [2024-11-27 19:51:28,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:28,203 INFO L225 Difference]: With dead ends: 64 [2024-11-27 19:51:28,203 INFO L226 Difference]: Without dead ends: 60 [2024-11-27 19:51:28,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 179 SyntacticMatches, 18 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=993, Invalid=2087, Unknown=0, NotChecked=0, Total=3080 [2024-11-27 19:51:28,205 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 121 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:28,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 127 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:51:28,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-27 19:51:28,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-27 19:51:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (18), 17 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 19:51:28,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-11-27 19:51:28,213 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 100 [2024-11-27 19:51:28,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:28,214 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-11-27 19:51:28,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 2.0833333333333335) internal successors, (75), 39 states have internal predecessors, (75), 19 states have call successors, (19), 1 states have call predecessors, (19), 16 states have return successors, (33), 16 states have call predecessors, (33), 19 states have call successors, (33) [2024-11-27 19:51:28,214 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-11-27 19:51:28,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-27 19:51:28,215 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:28,215 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:28,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-27 19:51:28,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 19:51:28,416 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:28,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:28,417 INFO L85 PathProgramCache]: Analyzing trace with hash 317812044, now seen corresponding path program 16 times [2024-11-27 19:51:28,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:28,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255841577] [2024-11-27 19:51:28,417 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 19:51:28,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:28,466 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 19:51:28,470 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:51:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 423 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-27 19:51:29,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:29,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255841577] [2024-11-27 19:51:29,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255841577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:29,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71418159] [2024-11-27 19:51:29,077 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 19:51:29,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:29,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:29,080 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:29,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-27 19:51:30,159 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 19:51:30,159 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:51:30,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-27 19:51:30,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-27 19:51:30,326 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:55,946 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-27 19:51:55,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71418159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:51:55,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:51:55,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 37] total 40 [2024-11-27 19:51:55,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249268694] [2024-11-27 19:51:55,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:51:55,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-27 19:51:55,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:55,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-27 19:51:55,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=1158, Unknown=0, NotChecked=0, Total=1560 [2024-11-27 19:51:55,949 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 40 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 40 states have internal predecessors, (78), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (35), 17 states have call predecessors, (35), 20 states have call successors, (35) [2024-11-27 19:51:56,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:56,322 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2024-11-27 19:51:56,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 19:51:56,322 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 40 states have internal predecessors, (78), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (35), 17 states have call predecessors, (35), 20 states have call successors, (35) Word has length 106 [2024-11-27 19:51:56,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:56,323 INFO L225 Difference]: With dead ends: 67 [2024-11-27 19:51:56,323 INFO L226 Difference]: Without dead ends: 63 [2024-11-27 19:51:56,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 192 SyntacticMatches, 17 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=994, Invalid=2086, Unknown=0, NotChecked=0, Total=3080 [2024-11-27 19:51:56,325 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 245 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:56,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 128 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:51:56,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-27 19:51:56,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-27 19:51:56,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 43 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (19), 18 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-27 19:51:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-11-27 19:51:56,333 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 106 [2024-11-27 19:51:56,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:56,334 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-11-27 19:51:56,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 40 states have internal predecessors, (78), 20 states have call successors, (20), 1 states have call predecessors, (20), 17 states have return successors, (35), 17 states have call predecessors, (35), 20 states have call successors, (35) [2024-11-27 19:51:56,334 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-11-27 19:51:56,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-27 19:51:56,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:56,336 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:56,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-27 19:51:56,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 19:51:56,536 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:56,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:56,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2122437418, now seen corresponding path program 17 times [2024-11-27 19:51:56,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:56,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411767082] [2024-11-27 19:51:56,537 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 19:51:56,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:56,601 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-27 19:51:56,601 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:51:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-11-27 19:51:57,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:57,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411767082] [2024-11-27 19:51:57,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411767082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:57,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887443298] [2024-11-27 19:51:57,232 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 19:51:57,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:57,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:57,234 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:57,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-27 19:51:58,645 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2024-11-27 19:51:58,645 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:51:58,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-27 19:51:58,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2024-11-27 19:51:58,763 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:52:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 731 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-27 19:52:29,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887443298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:52:29,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:52:29,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 39] total 41 [2024-11-27 19:52:29,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336441699] [2024-11-27 19:52:29,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:52:29,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-27 19:52:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:29,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-27 19:52:29,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=1218, Unknown=0, NotChecked=0, Total=1640 [2024-11-27 19:52:29,561 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 41 states, 39 states have (on average 2.051282051282051) internal successors, (80), 41 states have internal predecessors, (80), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (36), 18 states have call predecessors, (36), 20 states have call successors, (36) [2024-11-27 19:52:30,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:30,005 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2024-11-27 19:52:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-27 19:52:30,006 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 2.051282051282051) internal successors, (80), 41 states have internal predecessors, (80), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (36), 18 states have call predecessors, (36), 20 states have call successors, (36) Word has length 112 [2024-11-27 19:52:30,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:30,007 INFO L225 Difference]: With dead ends: 70 [2024-11-27 19:52:30,007 INFO L226 Difference]: Without dead ends: 66 [2024-11-27 19:52:30,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 204 SyntacticMatches, 18 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1068, Invalid=2238, Unknown=0, NotChecked=0, Total=3306 [2024-11-27 19:52:30,009 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 166 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:30,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 130 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:52:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-27 19:52:30,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-27 19:52:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 45 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (20), 19 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-27 19:52:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2024-11-27 19:52:30,017 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 112 [2024-11-27 19:52:30,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:30,017 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2024-11-27 19:52:30,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 2.051282051282051) internal successors, (80), 41 states have internal predecessors, (80), 20 states have call successors, (20), 1 states have call predecessors, (20), 18 states have return successors, (36), 18 states have call predecessors, (36), 20 states have call successors, (36) [2024-11-27 19:52:30,018 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2024-11-27 19:52:30,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-27 19:52:30,018 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:30,019 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:30,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-27 19:52:30,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 19:52:30,219 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:30,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash 55840780, now seen corresponding path program 18 times [2024-11-27 19:52:30,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:30,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394793731] [2024-11-27 19:52:30,220 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 19:52:30,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:30,267 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-27 19:52:30,267 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:52:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 17 proven. 513 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2024-11-27 19:52:31,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:31,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394793731] [2024-11-27 19:52:31,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394793731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:31,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274435201] [2024-11-27 19:52:31,008 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 19:52:31,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:31,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:52:31,010 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:52:31,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-27 19:52:32,740 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-27 19:52:32,740 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:52:32,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-27 19:52:32,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-27 19:52:32,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:53:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 819 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-27 19:53:09,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274435201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:53:09,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:53:09,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 41] total 45 [2024-11-27 19:53:09,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609318479] [2024-11-27 19:53:09,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:53:09,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-27 19:53:09,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:53:09,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-27 19:53:09,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 19:53:09,526 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 45 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 45 states have internal predecessors, (87), 22 states have call successors, (22), 1 states have call predecessors, (22), 19 states have return successors, (39), 19 states have call predecessors, (39), 22 states have call successors, (39) [2024-11-27 19:53:10,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:10,224 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2024-11-27 19:53:10,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 19:53:10,225 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 45 states have internal predecessors, (87), 22 states have call successors, (22), 1 states have call predecessors, (22), 19 states have return successors, (39), 19 states have call predecessors, (39), 22 states have call successors, (39) Word has length 118 [2024-11-27 19:53:10,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:10,226 INFO L225 Difference]: With dead ends: 73 [2024-11-27 19:53:10,226 INFO L226 Difference]: Without dead ends: 69 [2024-11-27 19:53:10,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 213 SyntacticMatches, 20 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1347, Invalid=2813, Unknown=0, NotChecked=0, Total=4160 [2024-11-27 19:53:10,228 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 111 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:10,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 138 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:53:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-27 19:53:10,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-27 19:53:10,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 47 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (21), 20 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-27 19:53:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2024-11-27 19:53:10,235 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 118 [2024-11-27 19:53:10,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:10,236 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2024-11-27 19:53:10,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 2.0714285714285716) internal successors, (87), 45 states have internal predecessors, (87), 22 states have call successors, (22), 1 states have call predecessors, (22), 19 states have return successors, (39), 19 states have call predecessors, (39), 22 states have call successors, (39) [2024-11-27 19:53:10,236 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2024-11-27 19:53:10,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-27 19:53:10,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:10,237 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:53:10,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-27 19:53:10,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:10,438 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:10,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:10,439 INFO L85 PathProgramCache]: Analyzing trace with hash -806952938, now seen corresponding path program 19 times [2024-11-27 19:53:10,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:53:10,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831961432] [2024-11-27 19:53:10,439 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 19:53:10,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:53:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-11-27 19:53:11,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:53:11,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831961432] [2024-11-27 19:53:11,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831961432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:11,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440165557] [2024-11-27 19:53:11,251 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 19:53:11,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:11,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:53:11,253 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:53:11,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-27 19:53:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:53:13,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-27 19:53:13,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:53:13,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-11-27 19:53:13,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:53:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-27 19:53:57,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440165557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:53:57,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:53:57,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 43] total 45 [2024-11-27 19:53:57,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596660307] [2024-11-27 19:53:57,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:53:57,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-27 19:53:57,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:53:57,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-27 19:53:57,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=1472, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 19:53:57,830 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 45 states, 43 states have (on average 2.046511627906977) internal successors, (88), 45 states have internal predecessors, (88), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (40), 20 states have call predecessors, (40), 22 states have call successors, (40) [2024-11-27 19:53:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:53:58,263 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2024-11-27 19:53:58,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 19:53:58,263 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 2.046511627906977) internal successors, (88), 45 states have internal predecessors, (88), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (40), 20 states have call predecessors, (40), 22 states have call successors, (40) Word has length 124 [2024-11-27 19:53:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:53:58,264 INFO L225 Difference]: With dead ends: 76 [2024-11-27 19:53:58,264 INFO L226 Difference]: Without dead ends: 72 [2024-11-27 19:53:58,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 226 SyntacticMatches, 20 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1306, Invalid=2726, Unknown=0, NotChecked=0, Total=4032 [2024-11-27 19:53:58,266 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 210 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:53:58,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 142 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:53:58,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-27 19:53:58,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-27 19:53:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 49 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 21 states have return successors, (22), 21 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-27 19:53:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-11-27 19:53:58,273 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 124 [2024-11-27 19:53:58,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:53:58,273 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-11-27 19:53:58,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 2.046511627906977) internal successors, (88), 45 states have internal predecessors, (88), 22 states have call successors, (22), 1 states have call predecessors, (22), 20 states have return successors, (40), 20 states have call predecessors, (40), 22 states have call successors, (40) [2024-11-27 19:53:58,273 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-11-27 19:53:58,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-27 19:53:58,274 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:53:58,274 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:53:58,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-27 19:53:58,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:58,475 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:53:58,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:53:58,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1807457588, now seen corresponding path program 20 times [2024-11-27 19:53:58,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:53:58,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887971558] [2024-11-27 19:53:58,475 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 19:53:58,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:53:58,530 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 19:53:58,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:53:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-11-27 19:53:59,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:53:59,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887971558] [2024-11-27 19:53:59,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887971558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:53:59,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365870407] [2024-11-27 19:53:59,224 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 19:53:59,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:53:59,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:53:59,226 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:53:59,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 19:54:01,671 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 19:54:01,671 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:54:01,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-27 19:54:01,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2024-11-27 19:54:01,815 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:54:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 1010 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-27 19:54:58,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365870407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:54:58,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:54:58,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 45] total 47 [2024-11-27 19:54:58,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980804797] [2024-11-27 19:54:58,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:54:58,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-27 19:54:58,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:54:58,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-27 19:54:58,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=1608, Unknown=0, NotChecked=0, Total=2162 [2024-11-27 19:54:58,171 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 47 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 47 states have internal predecessors, (92), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (42), 21 states have call predecessors, (42), 23 states have call successors, (42) [2024-11-27 19:54:58,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:54:58,695 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2024-11-27 19:54:58,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 19:54:58,696 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 47 states have internal predecessors, (92), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (42), 21 states have call predecessors, (42), 23 states have call successors, (42) Word has length 130 [2024-11-27 19:54:58,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:54:58,697 INFO L225 Difference]: With dead ends: 79 [2024-11-27 19:54:58,697 INFO L226 Difference]: Without dead ends: 75 [2024-11-27 19:54:58,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 237 SyntacticMatches, 21 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1434, Invalid=2988, Unknown=0, NotChecked=0, Total=4422 [2024-11-27 19:54:58,699 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 101 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:54:58,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 163 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:54:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-27 19:54:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-27 19:54:58,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.02) internal successors, (51), 51 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (23), 22 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-27 19:54:58,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2024-11-27 19:54:58,708 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 130 [2024-11-27 19:54:58,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:54:58,708 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2024-11-27 19:54:58,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 2.0444444444444443) internal successors, (92), 47 states have internal predecessors, (92), 23 states have call successors, (23), 1 states have call predecessors, (23), 21 states have return successors, (42), 21 states have call predecessors, (42), 23 states have call successors, (42) [2024-11-27 19:54:58,709 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2024-11-27 19:54:58,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-27 19:54:58,710 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:54:58,710 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:54:58,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-27 19:54:58,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:58,911 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:54:58,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:54:58,911 INFO L85 PathProgramCache]: Analyzing trace with hash 874439510, now seen corresponding path program 21 times [2024-11-27 19:54:58,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:54:58,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139369584] [2024-11-27 19:54:58,912 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 19:54:58,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:54:58,980 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-27 19:54:58,980 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:54:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 20 proven. 693 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2024-11-27 19:54:59,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:59,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139369584] [2024-11-27 19:54:59,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139369584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:59,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384113957] [2024-11-27 19:54:59,944 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 19:54:59,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:59,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:59,946 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:59,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-27 19:55:03,246 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-27 19:55:03,246 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:55:03,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-27 19:55:03,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:55:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-11-27 19:55:03,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:56:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1113 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-27 19:56:13,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384113957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:56:13,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:56:13,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 47] total 51 [2024-11-27 19:56:13,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708395625] [2024-11-27 19:56:13,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:56:13,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-27 19:56:13,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:56:13,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-27 19:56:13,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=1899, Unknown=0, NotChecked=0, Total=2550 [2024-11-27 19:56:13,199 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 51 states, 48 states have (on average 2.0625) internal successors, (99), 51 states have internal predecessors, (99), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (45), 22 states have call predecessors, (45), 25 states have call successors, (45) [2024-11-27 19:56:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:56:14,044 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2024-11-27 19:56:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 19:56:14,044 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 48 states have (on average 2.0625) internal successors, (99), 51 states have internal predecessors, (99), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (45), 22 states have call predecessors, (45), 25 states have call successors, (45) Word has length 136 [2024-11-27 19:56:14,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:56:14,046 INFO L225 Difference]: With dead ends: 82 [2024-11-27 19:56:14,046 INFO L226 Difference]: Without dead ends: 78 [2024-11-27 19:56:14,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 246 SyntacticMatches, 23 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1755, Invalid=3647, Unknown=0, NotChecked=0, Total=5402 [2024-11-27 19:56:14,050 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 244 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:56:14,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 171 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:56:14,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-27 19:56:14,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-27 19:56:14,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 53 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 23 states have return successors, (24), 23 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-27 19:56:14,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2024-11-27 19:56:14,059 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 136 [2024-11-27 19:56:14,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:56:14,059 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2024-11-27 19:56:14,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 48 states have (on average 2.0625) internal successors, (99), 51 states have internal predecessors, (99), 25 states have call successors, (25), 1 states have call predecessors, (25), 22 states have return successors, (45), 22 states have call predecessors, (45), 25 states have call successors, (45) [2024-11-27 19:56:14,060 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2024-11-27 19:56:14,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-27 19:56:14,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:56:14,064 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:56:14,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-27 19:56:14,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:14,264 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:56:14,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:56:14,265 INFO L85 PathProgramCache]: Analyzing trace with hash 849241484, now seen corresponding path program 22 times [2024-11-27 19:56:14,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:56:14,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409350799] [2024-11-27 19:56:14,265 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 19:56:14,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:56:14,325 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 19:56:14,325 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:56:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2024-11-27 19:56:15,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:56:15,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409350799] [2024-11-27 19:56:15,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409350799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:56:15,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609402111] [2024-11-27 19:56:15,242 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 19:56:15,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:56:15,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:56:15,244 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:56:15,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-27 19:56:19,350 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 19:56:19,350 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:56:19,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-27 19:56:19,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:56:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2024-11-27 19:56:19,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:57:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1474 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-27 19:57:42,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609402111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:57:42,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:57:42,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 49] total 52 [2024-11-27 19:57:42,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57920438] [2024-11-27 19:57:42,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:57:42,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-27 19:57:42,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:57:42,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-27 19:57:42,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=678, Invalid=1974, Unknown=0, NotChecked=0, Total=2652 [2024-11-27 19:57:42,904 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 52 states, 50 states have (on average 2.04) internal successors, (102), 52 states have internal predecessors, (102), 26 states have call successors, (26), 1 states have call predecessors, (26), 23 states have return successors, (47), 23 states have call predecessors, (47), 26 states have call successors, (47) [2024-11-27 19:57:43,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:57:43,509 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2024-11-27 19:57:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 19:57:43,510 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 2.04) internal successors, (102), 52 states have internal predecessors, (102), 26 states have call successors, (26), 1 states have call predecessors, (26), 23 states have return successors, (47), 23 states have call predecessors, (47), 26 states have call successors, (47) Word has length 142 [2024-11-27 19:57:43,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:57:43,511 INFO L225 Difference]: With dead ends: 85 [2024-11-27 19:57:43,511 INFO L226 Difference]: Without dead ends: 81 [2024-11-27 19:57:43,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 258 SyntacticMatches, 23 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1756, Invalid=3646, Unknown=0, NotChecked=0, Total=5402 [2024-11-27 19:57:43,513 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 290 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:57:43,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 165 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:57:43,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-27 19:57:43,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-27 19:57:43,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 55 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 24 states have return successors, (25), 24 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-27 19:57:43,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2024-11-27 19:57:43,521 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 142 [2024-11-27 19:57:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:57:43,522 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2024-11-27 19:57:43,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 2.04) internal successors, (102), 52 states have internal predecessors, (102), 26 states have call successors, (26), 1 states have call predecessors, (26), 23 states have return successors, (47), 23 states have call predecessors, (47), 26 states have call successors, (47) [2024-11-27 19:57:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2024-11-27 19:57:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-27 19:57:43,523 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:57:43,524 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:57:43,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-27 19:57:43,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:43,724 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:57:43,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:57:43,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1665808022, now seen corresponding path program 23 times [2024-11-27 19:57:43,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:57:43,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262565021] [2024-11-27 19:57:43,725 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 19:57:43,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:57:43,847 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-27 19:57:43,848 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:57:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2024-11-27 19:57:44,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:57:44,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262565021] [2024-11-27 19:57:44,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262565021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:57:44,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618271251] [2024-11-27 19:57:44,897 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 19:57:44,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:57:44,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:57:44,899 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:57:44,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-27 19:57:49,721 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-27 19:57:49,721 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:57:49,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-27 19:57:49,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:57:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2024-11-27 19:57:49,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:59:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 1334 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-27 19:59:32,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618271251] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:59:32,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:59:32,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 51] total 53 [2024-11-27 19:59:32,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061193936] [2024-11-27 19:59:32,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:59:32,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-27 19:59:32,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:59:32,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-27 19:59:32,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=704, Invalid=2052, Unknown=0, NotChecked=0, Total=2756 [2024-11-27 19:59:32,225 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 53 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 53 states have internal predecessors, (104), 26 states have call successors, (26), 1 states have call predecessors, (26), 24 states have return successors, (48), 24 states have call predecessors, (48), 26 states have call successors, (48) [2024-11-27 19:59:32,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:59:32,957 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2024-11-27 19:59:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-27 19:59:32,959 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 53 states have internal predecessors, (104), 26 states have call successors, (26), 1 states have call predecessors, (26), 24 states have return successors, (48), 24 states have call predecessors, (48), 26 states have call successors, (48) Word has length 148 [2024-11-27 19:59:32,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:59:32,960 INFO L225 Difference]: With dead ends: 88 [2024-11-27 19:59:32,960 INFO L226 Difference]: Without dead ends: 84 [2024-11-27 19:59:32,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 270 SyntacticMatches, 24 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1854, Invalid=3846, Unknown=0, NotChecked=0, Total=5700 [2024-11-27 19:59:32,961 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 454 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:59:32,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 170 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:59:32,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-27 19:59:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-27 19:59:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 56 states have (on average 1.0178571428571428) internal successors, (57), 57 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 25 states have return successors, (26), 25 states have call predecessors, (26), 2 states have call successors, (26) [2024-11-27 19:59:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2024-11-27 19:59:32,969 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 148 [2024-11-27 19:59:32,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:59:32,969 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2024-11-27 19:59:32,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 53 states have internal predecessors, (104), 26 states have call successors, (26), 1 states have call predecessors, (26), 24 states have return successors, (48), 24 states have call predecessors, (48), 26 states have call successors, (48) [2024-11-27 19:59:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2024-11-27 19:59:32,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-27 19:59:32,970 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:59:32,970 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:59:32,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-27 19:59:33,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:33,171 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:59:33,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:59:33,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1715345484, now seen corresponding path program 24 times [2024-11-27 19:59:33,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:59:33,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887858421] [2024-11-27 19:59:33,172 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 19:59:33,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:59:33,269 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-11-27 19:59:33,269 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:59:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 52 proven. 916 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2024-11-27 19:59:34,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:59:34,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887858421] [2024-11-27 19:59:34,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887858421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:59:34,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043648624] [2024-11-27 19:59:34,522 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 19:59:34,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:59:34,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:59:34,528 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:59:34,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-27 19:59:40,484 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-11-27 19:59:40,484 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:59:40,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-27 19:59:40,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:59:40,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 876 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2024-11-27 19:59:40,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:01:35,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-11-27 20:01:35,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043648624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:01:35,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:01:35,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29, 53] total 57 [2024-11-27 20:01:35,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733096388] [2024-11-27 20:01:35,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:01:35,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-27 20:01:35,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:35,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-27 20:01:35,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=839, Invalid=2353, Unknown=0, NotChecked=0, Total=3192 [2024-11-27 20:01:35,821 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 57 states, 55 states have (on average 2.036363636363636) internal successors, (112), 57 states have internal predecessors, (112), 28 states have call successors, (28), 1 states have call predecessors, (28), 25 states have return successors, (51), 25 states have call predecessors, (51), 28 states have call successors, (51) [2024-11-27 20:01:36,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:36,712 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2024-11-27 20:01:36,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-27 20:01:36,713 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 55 states have (on average 2.036363636363636) internal successors, (112), 57 states have internal predecessors, (112), 28 states have call successors, (28), 1 states have call predecessors, (28), 25 states have return successors, (51), 25 states have call predecessors, (51), 28 states have call successors, (51) Word has length 154 [2024-11-27 20:01:36,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:36,714 INFO L225 Difference]: With dead ends: 91 [2024-11-27 20:01:36,714 INFO L226 Difference]: Without dead ends: 87 [2024-11-27 20:01:36,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 278 SyntacticMatches, 27 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2031 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2214, Invalid=4428, Unknown=0, NotChecked=0, Total=6642 [2024-11-27 20:01:36,716 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 347 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:36,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 185 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:01:36,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-27 20:01:36,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-27 20:01:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 59 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 26 states have return successors, (27), 26 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:01:36,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-11-27 20:01:36,726 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 154 [2024-11-27 20:01:36,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:36,726 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-11-27 20:01:36,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 55 states have (on average 2.036363636363636) internal successors, (112), 57 states have internal predecessors, (112), 28 states have call successors, (28), 1 states have call predecessors, (28), 25 states have return successors, (51), 25 states have call predecessors, (51), 28 states have call successors, (51) [2024-11-27 20:01:36,727 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-11-27 20:01:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-27 20:01:36,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:36,728 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:36,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-27 20:01:36,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:36,932 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:36,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:36,933 INFO L85 PathProgramCache]: Analyzing trace with hash -678635050, now seen corresponding path program 25 times [2024-11-27 20:01:36,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:36,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321450605] [2024-11-27 20:01:36,933 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:01:36,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 828 proven. 218 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2024-11-27 20:01:42,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:42,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321450605] [2024-11-27 20:01:42,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321450605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:01:42,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934845183] [2024-11-27 20:01:42,202 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 20:01:42,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:42,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:42,205 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:42,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-27 20:01:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:49,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 217 conjuncts are in the unsatisfiable core [2024-11-27 20:01:49,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 49 proven. 950 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2024-11-27 20:01:54,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:02:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 999 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2024-11-27 20:02:15,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934845183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:02:15,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:02:15,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 122 [2024-11-27 20:02:15,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578377644] [2024-11-27 20:02:15,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:02:15,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-11-27 20:02:15,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:02:15,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-11-27 20:02:15,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=806, Invalid=13956, Unknown=0, NotChecked=0, Total=14762 [2024-11-27 20:02:15,701 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 122 states, 117 states have (on average 1.0940170940170941) internal successors, (128), 69 states have internal predecessors, (128), 8 states have call successors, (8), 1 states have call predecessors, (8), 53 states have return successors, (54), 53 states have call predecessors, (54), 8 states have call successors, (54) [2024-11-27 20:02:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:24,117 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2024-11-27 20:02:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-27 20:02:24,118 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 117 states have (on average 1.0940170940170941) internal successors, (128), 69 states have internal predecessors, (128), 8 states have call successors, (8), 1 states have call predecessors, (8), 53 states have return successors, (54), 53 states have call predecessors, (54), 8 states have call successors, (54) Word has length 160 [2024-11-27 20:02:24,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:24,119 INFO L225 Difference]: With dead ends: 90 [2024-11-27 20:02:24,119 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 20:02:24,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7342 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=2279, Invalid=29941, Unknown=0, NotChecked=0, Total=32220 [2024-11-27 20:02:24,124 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 367 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 3858 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 4050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:24,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1907 Invalid, 4050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 3858 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-27 20:02:24,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 20:02:24,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 20:02:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:02:24,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 20:02:24,126 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2024-11-27 20:02:24,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:24,126 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 20:02:24,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 117 states have (on average 1.0940170940170941) internal successors, (128), 69 states have internal predecessors, (128), 8 states have call successors, (8), 1 states have call predecessors, (8), 53 states have return successors, (54), 53 states have call predecessors, (54), 8 states have call successors, (54) [2024-11-27 20:02:24,127 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 20:02:24,127 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 20:02:24,130 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 20:02:24,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-27 20:02:24,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:02:24,336 INFO L422 BasicCegarLoop]: Path program histogram: [25, 1] [2024-11-27 20:02:24,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-27 20:02:25,799 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:02:25,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:02:25 BoogieIcfgContainer [2024-11-27 20:02:25,811 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:02:25,812 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:02:25,813 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:02:25,814 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:02:25,814 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:49:38" (3/4) ... [2024-11-27 20:02:25,817 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 20:02:25,825 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2024-11-27 20:02:25,834 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-27 20:02:25,834 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-27 20:02:25,835 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-27 20:02:25,835 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 20:02:25,925 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 20:02:25,925 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 20:02:25,925 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:02:25,927 INFO L158 Benchmark]: Toolchain (without parser) took 768107.01ms. Allocated memory was 117.4MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 93.1MB in the beginning and 571.3MB in the end (delta: -478.3MB). Peak memory consumption was 854.6MB. Max. memory is 16.1GB. [2024-11-27 20:02:25,927 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:02:25,927 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.85ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 82.3MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:02:25,928 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.86ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 81.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:02:25,928 INFO L158 Benchmark]: Boogie Preprocessor took 22.66ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 80.3MB in the end (delta: 873.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:02:25,928 INFO L158 Benchmark]: RCFGBuilder took 250.39ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 71.1MB in the end (delta: 9.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:02:25,929 INFO L158 Benchmark]: TraceAbstraction took 767447.53ms. Allocated memory was 117.4MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 70.5MB in the beginning and 575.8MB in the end (delta: -505.4MB). Peak memory consumption was 821.1MB. Max. memory is 16.1GB. [2024-11-27 20:02:25,929 INFO L158 Benchmark]: Witness Printer took 113.61ms. Allocated memory is still 1.5GB. Free memory was 575.8MB in the beginning and 571.3MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 20:02:25,931 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.85ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 82.3MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.86ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 81.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.66ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 80.3MB in the end (delta: 873.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 250.39ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 71.1MB in the end (delta: 9.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 767447.53ms. Allocated memory was 117.4MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 70.5MB in the beginning and 575.8MB in the end (delta: -505.4MB). Peak memory consumption was 821.1MB. Max. memory is 16.1GB. * Witness Printer took 113.61ms. Allocated memory is still 1.5GB. Free memory was 575.8MB in the beginning and 571.3MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 765.9s, OverallIterations: 26, TraceHistogramMax: 26, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 17.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3535 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3284 mSDsluCounter, 4576 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4293 mSDsCounter, 1547 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6244 IncrementalHoareTripleChecker+Invalid, 7791 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1547 mSolverCounterUnsat, 283 mSDtfsCounter, 6244 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5539 GetRequests, 3963 SyntacticMatches, 337 SemanticMatches, 1239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24233 ImplicationChecksByTransitivity, 35.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=25, InterpolantAutomatonStates: 493, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 26 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 703.5s InterpolantComputationTime, 4410 NumberOfCodeBlocks, 4410 NumberOfCodeBlocksAsserted, 395 NumberOfCheckSat, 6534 ConstructedInterpolants, 0 QuantifiedInterpolants, 21134 SizeOfPredicates, 327 NumberOfNonLiveVariables, 7025 ConjunctsInSsa, 913 ConjunctsInUnsatCore, 76 InterpolantComputations, 1 PerfectInterpolantSequences, 20909/50700 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-27 20:02:26,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae47823b-5413-47c3-a18e-c9075a5d08e0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE