./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU --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 a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:18:21,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:18:22,064 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:18:22,070 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:18:22,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:18:22,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:18:22,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:18:22,112 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:18:22,112 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:18:22,114 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:18:22,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:18:22,115 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:18:22,116 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:18:22,118 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:18:22,121 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:18:22,122 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:18:22,122 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:18:22,123 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:18:22,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:18:22,124 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:18:22,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:18:22,128 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:18:22,129 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:18:22,129 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:18:22,130 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:18:22,130 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:18:22,130 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:18:22,131 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:18:22,131 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:18:22,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:18:22,134 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:18:22,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:18:22,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:18:22,136 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:18:22,137 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:18:22,137 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:18:22,137 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:18:22,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:18:22,138 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:18:22,138 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:18:22,139 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:18:22,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:18:22,140 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a [2024-10-31 22:18:22,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:18:22,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:18:22,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:18:22,477 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:18:22,478 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:18:22,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/recursive-simple/fibo_10-2.c Unable to find full path for "g++" [2024-10-31 22:18:24,581 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:18:24,801 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:18:24,802 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/sv-benchmarks/c/recursive-simple/fibo_10-2.c [2024-10-31 22:18:24,810 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/data/2cbca39e0/2021a672cd28402dbdb4c33eeb9477d4/FLAGa44ba2860 [2024-10-31 22:18:24,832 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/data/2cbca39e0/2021a672cd28402dbdb4c33eeb9477d4 [2024-10-31 22:18:24,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:18:24,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:18:24,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:18:24,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:18:24,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:18:24,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:18:24" (1/1) ... [2024-10-31 22:18:24,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34d5d6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:24, skipping insertion in model container [2024-10-31 22:18:24,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:18:24" (1/1) ... [2024-10-31 22:18:24,875 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:18:25,100 WARN L251 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_0ccb0489-d00c-4038-a638-20e8c11a2cac/sv-benchmarks/c/recursive-simple/fibo_10-2.c[743,756] [2024-10-31 22:18:25,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:18:25,118 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:18:25,132 WARN L251 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_0ccb0489-d00c-4038-a638-20e8c11a2cac/sv-benchmarks/c/recursive-simple/fibo_10-2.c[743,756] [2024-10-31 22:18:25,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:18:25,154 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:18:25,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:25 WrapperNode [2024-10-31 22:18:25,155 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:18:25,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:18:25,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:18:25,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:18:25,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:25" (1/1) ... [2024-10-31 22:18:25,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:25" (1/1) ... [2024-10-31 22:18:25,187 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-10-31 22:18:25,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:18:25,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:18:25,189 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:18:25,189 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:18:25,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:25" (1/1) ... [2024-10-31 22:18:25,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:25" (1/1) ... [2024-10-31 22:18:25,201 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:25" (1/1) ... [2024-10-31 22:18:25,217 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]. [2024-10-31 22:18:25,218 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:25" (1/1) ... [2024-10-31 22:18:25,218 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:25" (1/1) ... [2024-10-31 22:18:25,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:25" (1/1) ... [2024-10-31 22:18:25,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:25" (1/1) ... [2024-10-31 22:18:25,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:25" (1/1) ... [2024-10-31 22:18:25,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:25" (1/1) ... [2024-10-31 22:18:25,227 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:18:25,229 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:18:25,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:18:25,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:18:25,230 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:25" (1/1) ... [2024-10-31 22:18:25,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:18:25,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:25,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:25,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:18:25,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:18:25,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:18:25,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:18:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:18:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-10-31 22:18:25,298 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-10-31 22:18:25,367 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:18:25,369 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:18:25,478 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-31 22:18:25,478 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:18:25,494 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:18:25,495 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:18:25,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:25 BoogieIcfgContainer [2024-10-31 22:18:25,496 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:18:25,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:18:25,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:18:25,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:18:25,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:18:24" (1/3) ... [2024-10-31 22:18:25,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e56bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:18:25, skipping insertion in model container [2024-10-31 22:18:25,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:25" (2/3) ... [2024-10-31 22:18:25,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e56bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:18:25, skipping insertion in model container [2024-10-31 22:18:25,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:25" (3/3) ... [2024-10-31 22:18:25,506 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_10-2.c [2024-10-31 22:18:25,525 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:18:25,525 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:18:25,597 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:18:25,605 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;@2a55051b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:18:25,606 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:18:25,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:18:25,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-31 22:18:25,620 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:25,621 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:25,621 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:25,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:25,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1755511548, now seen corresponding path program 1 times [2024-10-31 22:18:25,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:25,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366102510] [2024-10-31 22:18:25,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:25,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:25,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:18:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:26,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:26,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:26,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366102510] [2024-10-31 22:18:26,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366102510] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:26,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:26,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:18:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733294032] [2024-10-31 22:18:26,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:26,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:18:26,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:26,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:18:26,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:18:26,044 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2024-10-31 22:18:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:26,158 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-10-31 22:18:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:18:26,163 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 [2024-10-31 22:18:26,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:26,184 INFO L225 Difference]: With dead ends: 32 [2024-10-31 22:18:26,184 INFO L226 Difference]: Without dead ends: 20 [2024-10-31 22:18:26,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:18:26,195 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:26,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:18:26,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-10-31 22:18:26,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-10-31 22:18:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-31 22:18:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-10-31 22:18:26,257 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2024-10-31 22:18:26,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:26,258 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-10-31 22:18:26,258 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) [2024-10-31 22:18:26,259 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-10-31 22:18:26,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-31 22:18:26,260 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:26,260 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:26,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:18:26,264 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:26,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:26,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2128459596, now seen corresponding path program 1 times [2024-10-31 22:18:26,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:26,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403558776] [2024-10-31 22:18:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:26,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:26,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:18:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403558776] [2024-10-31 22:18:26,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403558776] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:26,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:26,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:18:26,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609306622] [2024-10-31 22:18:26,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:26,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:18:26,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:26,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:18:26,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:18:26,410 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-10-31 22:18:26,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:26,473 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2024-10-31 22:18:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:18:26,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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 11 [2024-10-31 22:18:26,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:26,475 INFO L225 Difference]: With dead ends: 24 [2024-10-31 22:18:26,476 INFO L226 Difference]: Without dead ends: 20 [2024-10-31 22:18:26,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:18:26,478 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:26,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:18:26,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-10-31 22:18:26,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-10-31 22:18:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-31 22:18:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-10-31 22:18:26,490 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2024-10-31 22:18:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:26,491 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-10-31 22:18:26,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2024-10-31 22:18:26,491 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-10-31 22:18:26,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-31 22:18:26,497 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:26,498 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:26,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:18:26,498 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:26,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:26,500 INFO L85 PathProgramCache]: Analyzing trace with hash -42544313, now seen corresponding path program 1 times [2024-10-31 22:18:26,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:26,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430199403] [2024-10-31 22:18:26,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:26,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:26,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:18:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:26,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:26,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 22:18:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:18:26,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:26,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430199403] [2024-10-31 22:18:26,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430199403] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:26,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665047213] [2024-10-31 22:18:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:26,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:26,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:26,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:26,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:18:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:26,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:18:26,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:18:27,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:18:27,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665047213] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:27,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:27,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2024-10-31 22:18:27,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458455890] [2024-10-31 22:18:27,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:27,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:18:27,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:27,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:18:27,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:18:27,411 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-31 22:18:27,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:27,534 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-10-31 22:18:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:18:27,535 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2024-10-31 22:18:27,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:27,537 INFO L225 Difference]: With dead ends: 35 [2024-10-31 22:18:27,537 INFO L226 Difference]: Without dead ends: 20 [2024-10-31 22:18:27,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:18:27,539 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:27,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 65 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:18:27,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-10-31 22:18:27,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-10-31 22:18:27,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-31 22:18:27,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-10-31 22:18:27,548 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2024-10-31 22:18:27,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:27,549 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-10-31 22:18:27,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-31 22:18:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-10-31 22:18:27,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-31 22:18:27,554 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:27,554 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:27,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:27,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:27,755 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:27,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:27,756 INFO L85 PathProgramCache]: Analyzing trace with hash 170813287, now seen corresponding path program 1 times [2024-10-31 22:18:27,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:27,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265306226] [2024-10-31 22:18:27,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:27,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:27,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:18:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:27,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:27,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:18:27,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:27,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265306226] [2024-10-31 22:18:27,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265306226] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:27,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365808582] [2024-10-31 22:18:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:27,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:27,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:27,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:27,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:18:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:28,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:18:28,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:18:28,133 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:18:28,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365808582] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:28,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:28,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2024-10-31 22:18:28,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033252415] [2024-10-31 22:18:28,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:28,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:18:28,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:28,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:18:28,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:18:28,392 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:18:28,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:28,517 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2024-10-31 22:18:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:18:28,518 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) Word has length 24 [2024-10-31 22:18:28,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:28,519 INFO L225 Difference]: With dead ends: 38 [2024-10-31 22:18:28,520 INFO L226 Difference]: Without dead ends: 34 [2024-10-31 22:18:28,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:18:28,524 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:28,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 64 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:18:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-31 22:18:28,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-10-31 22:18:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2024-10-31 22:18:28,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2024-10-31 22:18:28,539 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 24 [2024-10-31 22:18:28,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:28,540 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2024-10-31 22:18:28,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 11 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:18:28,540 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2024-10-31 22:18:28,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-31 22:18:28,542 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:28,542 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:28,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:28,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:28,743 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:28,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:28,744 INFO L85 PathProgramCache]: Analyzing trace with hash -187634876, now seen corresponding path program 2 times [2024-10-31 22:18:28,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:28,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429424430] [2024-10-31 22:18:28,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:28,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:28,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:18:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:28,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:28,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:29,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:29,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-31 22:18:29,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:29,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429424430] [2024-10-31 22:18:29,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429424430] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:29,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002458924] [2024-10-31 22:18:29,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:18:29,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:29,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:29,042 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:29,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:18:29,105 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:18:29,105 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:18:29,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:18:29,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-31 22:18:29,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-31 22:18:29,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002458924] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:29,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:29,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 17 [2024-10-31 22:18:29,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339855453] [2024-10-31 22:18:29,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:29,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-31 22:18:29,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:29,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-31 22:18:29,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-10-31 22:18:29,670 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2024-10-31 22:18:29,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:29,886 INFO L93 Difference]: Finished difference Result 69 states and 106 transitions. [2024-10-31 22:18:29,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-31 22:18:29,887 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) Word has length 37 [2024-10-31 22:18:29,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:29,888 INFO L225 Difference]: With dead ends: 69 [2024-10-31 22:18:29,888 INFO L226 Difference]: Without dead ends: 38 [2024-10-31 22:18:29,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2024-10-31 22:18:29,893 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 22 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:29,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 81 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:18:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-10-31 22:18:29,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-10-31 22:18:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2024-10-31 22:18:29,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-10-31 22:18:29,908 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 37 [2024-10-31 22:18:29,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:29,909 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-10-31 22:18:29,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.933333333333333) internal successors, (44), 17 states have internal predecessors, (44), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2024-10-31 22:18:29,909 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-10-31 22:18:29,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-31 22:18:29,914 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:29,914 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:29,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:30,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:30,118 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:30,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:30,118 INFO L85 PathProgramCache]: Analyzing trace with hash -721858190, now seen corresponding path program 3 times [2024-10-31 22:18:30,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:30,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046675689] [2024-10-31 22:18:30,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:30,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:30,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:18:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:30,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:30,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:30,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:30,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:30,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:30,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:30,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:30,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:30,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:30,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:30,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:30,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 27 proven. 166 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-10-31 22:18:30,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:30,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046675689] [2024-10-31 22:18:30,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046675689] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:30,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618297626] [2024-10-31 22:18:30,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:18:30,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:30,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:30,702 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:30,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:18:30,779 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-10-31 22:18:30,779 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:18:30,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:18:30,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-10-31 22:18:30,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 18 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-31 22:18:31,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618297626] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:31,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:31,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 19 [2024-10-31 22:18:31,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81002103] [2024-10-31 22:18:31,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:31,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-31 22:18:31,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:31,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-31 22:18:31,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:18:31,422 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 9 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) [2024-10-31 22:18:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:31,768 INFO L93 Difference]: Finished difference Result 89 states and 133 transitions. [2024-10-31 22:18:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-31 22:18:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 9 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) Word has length 93 [2024-10-31 22:18:31,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:31,774 INFO L225 Difference]: With dead ends: 89 [2024-10-31 22:18:31,774 INFO L226 Difference]: Without dead ends: 53 [2024-10-31 22:18:31,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 199 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2024-10-31 22:18:31,776 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 60 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:31,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 101 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:18:31,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-31 22:18:31,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2024-10-31 22:18:31,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2024-10-31 22:18:31,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2024-10-31 22:18:31,787 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 93 [2024-10-31 22:18:31,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:31,788 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2024-10-31 22:18:31,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 9 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) [2024-10-31 22:18:31,788 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2024-10-31 22:18:31,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-31 22:18:31,791 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:31,791 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:31,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:18:31,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:18:31,995 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:31,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:31,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1447005449, now seen corresponding path program 4 times [2024-10-31 22:18:31,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:31,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679384011] [2024-10-31 22:18:31,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:31,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:18:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:18:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 198 proven. 308 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2024-10-31 22:18:32,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:32,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679384011] [2024-10-31 22:18:32,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679384011] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:32,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750719217] [2024-10-31 22:18:32,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 22:18:32,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:32,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:32,963 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:32,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:18:33,047 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 22:18:33,047 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:18:33,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 22:18:33,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 52 proven. 326 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-10-31 22:18:33,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 52 proven. 352 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2024-10-31 22:18:34,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750719217] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:34,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:34,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9, 13] total 27 [2024-10-31 22:18:34,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519133842] [2024-10-31 22:18:34,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:34,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-31 22:18:34,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:34,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-31 22:18:34,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2024-10-31 22:18:34,549 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 27 states, 25 states have (on average 2.68) internal successors, (67), 27 states have internal predecessors, (67), 20 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (31), 16 states have call predecessors, (31), 20 states have call successors, (31) [2024-10-31 22:18:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:34,958 INFO L93 Difference]: Finished difference Result 116 states and 179 transitions. [2024-10-31 22:18:34,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-31 22:18:34,959 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.68) internal successors, (67), 27 states have internal predecessors, (67), 20 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (31), 16 states have call predecessors, (31), 20 states have call successors, (31) Word has length 133 [2024-10-31 22:18:34,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:34,961 INFO L225 Difference]: With dead ends: 116 [2024-10-31 22:18:34,961 INFO L226 Difference]: Without dead ends: 73 [2024-10-31 22:18:34,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 291 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=349, Invalid=983, Unknown=0, NotChecked=0, Total=1332 [2024-10-31 22:18:34,966 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 112 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:34,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 124 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:18:34,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-31 22:18:34,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2024-10-31 22:18:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 46 states have internal predecessors, (53), 11 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (25), 11 states have call predecessors, (25), 11 states have call successors, (25) [2024-10-31 22:18:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 89 transitions. [2024-10-31 22:18:34,988 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 89 transitions. Word has length 133 [2024-10-31 22:18:34,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:34,989 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 89 transitions. [2024-10-31 22:18:34,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.68) internal successors, (67), 27 states have internal predecessors, (67), 20 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (31), 16 states have call predecessors, (31), 20 states have call successors, (31) [2024-10-31 22:18:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2024-10-31 22:18:34,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-31 22:18:34,995 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:34,996 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:35,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:18:35,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:35,204 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:35,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:35,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1022210831, now seen corresponding path program 5 times [2024-10-31 22:18:35,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:35,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169576053] [2024-10-31 22:18:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:35,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:35,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:18:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:35,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:35,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:35,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:35,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:18:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-31 22:18:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:18:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 403 proven. 706 refuted. 0 times theorem prover too weak. 1471 trivial. 0 not checked. [2024-10-31 22:18:36,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:36,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169576053] [2024-10-31 22:18:36,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169576053] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:36,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258510339] [2024-10-31 22:18:36,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 22:18:36,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:36,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:36,446 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:36,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 22:18:36,580 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-10-31 22:18:36,580 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:18:36,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-31 22:18:36,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 630 proven. 586 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked. [2024-10-31 22:18:36,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 634 proven. 619 refuted. 0 times theorem prover too weak. 1327 trivial. 0 not checked. [2024-10-31 22:18:39,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258510339] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:39,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:39,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 21] total 33 [2024-10-31 22:18:39,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263199781] [2024-10-31 22:18:39,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:39,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-31 22:18:39,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:39,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-31 22:18:39,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2024-10-31 22:18:39,171 INFO L87 Difference]: Start difference. First operand 67 states and 89 transitions. Second operand has 33 states, 32 states have (on average 2.84375) internal successors, (91), 33 states have internal predecessors, (91), 25 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (42), 20 states have call predecessors, (42), 25 states have call successors, (42) [2024-10-31 22:18:39,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:39,687 INFO L93 Difference]: Finished difference Result 147 states and 243 transitions. [2024-10-31 22:18:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-31 22:18:39,687 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.84375) internal successors, (91), 33 states have internal predecessors, (91), 25 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (42), 20 states have call predecessors, (42), 25 states have call successors, (42) Word has length 215 [2024-10-31 22:18:39,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:39,690 INFO L225 Difference]: With dead ends: 147 [2024-10-31 22:18:39,690 INFO L226 Difference]: Without dead ends: 91 [2024-10-31 22:18:39,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 469 SyntacticMatches, 10 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=641, Invalid=1909, Unknown=0, NotChecked=0, Total=2550 [2024-10-31 22:18:39,696 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 112 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:39,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 152 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:18:39,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-31 22:18:39,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 84. [2024-10-31 22:18:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 58 states have internal predecessors, (62), 15 states have call successors, (15), 12 states have call predecessors, (15), 8 states have return successors, (36), 13 states have call predecessors, (36), 15 states have call successors, (36) [2024-10-31 22:18:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 113 transitions. [2024-10-31 22:18:39,728 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 113 transitions. Word has length 215 [2024-10-31 22:18:39,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:39,729 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 113 transitions. [2024-10-31 22:18:39,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.84375) internal successors, (91), 33 states have internal predecessors, (91), 25 states have call successors, (31), 1 states have call predecessors, (31), 12 states have return successors, (42), 20 states have call predecessors, (42), 25 states have call successors, (42) [2024-10-31 22:18:39,729 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 113 transitions. [2024-10-31 22:18:39,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-10-31 22:18:39,735 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:39,735 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:39,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 22:18:39,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:39,936 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:39,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:39,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1334891743, now seen corresponding path program 6 times [2024-10-31 22:18:39,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:39,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878606692] [2024-10-31 22:18:39,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:39,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:40,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:18:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:40,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:40,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:18:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-31 22:18:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-31 22:18:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:18:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-31 22:18:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1307 proven. 1260 refuted. 0 times theorem prover too weak. 3472 trivial. 0 not checked. [2024-10-31 22:18:41,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:41,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878606692] [2024-10-31 22:18:41,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878606692] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:41,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835370978] [2024-10-31 22:18:41,939 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-31 22:18:41,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:41,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:41,942 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:41,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 22:18:42,112 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2024-10-31 22:18:42,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:18:42,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 22:18:42,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 346 proven. 1004 refuted. 0 times theorem prover too weak. 4689 trivial. 0 not checked. [2024-10-31 22:18:42,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 350 proven. 1040 refuted. 0 times theorem prover too weak. 4649 trivial. 0 not checked. [2024-10-31 22:18:44,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835370978] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:44,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:44,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 10, 15] total 32 [2024-10-31 22:18:44,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408650514] [2024-10-31 22:18:44,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:44,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-31 22:18:44,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:44,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-31 22:18:44,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=759, Unknown=0, NotChecked=0, Total=992 [2024-10-31 22:18:44,606 INFO L87 Difference]: Start difference. First operand 84 states and 113 transitions. Second operand has 32 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 32 states have internal predecessors, (79), 23 states have call successors, (28), 1 states have call predecessors, (28), 12 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) [2024-10-31 22:18:45,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:45,193 INFO L93 Difference]: Finished difference Result 193 states and 312 transitions. [2024-10-31 22:18:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-31 22:18:45,193 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 32 states have internal predecessors, (79), 23 states have call successors, (28), 1 states have call predecessors, (28), 12 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) Word has length 324 [2024-10-31 22:18:45,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:45,199 INFO L225 Difference]: With dead ends: 193 [2024-10-31 22:18:45,203 INFO L226 Difference]: Without dead ends: 120 [2024-10-31 22:18:45,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 733 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=624, Invalid=1926, Unknown=0, NotChecked=0, Total=2550 [2024-10-31 22:18:45,205 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 153 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:45,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 152 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:18:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-10-31 22:18:45,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 105. [2024-10-31 22:18:45,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 75 states have (on average 1.04) internal successors, (78), 73 states have internal predecessors, (78), 20 states have call successors, (20), 16 states have call predecessors, (20), 9 states have return successors, (46), 15 states have call predecessors, (46), 20 states have call successors, (46) [2024-10-31 22:18:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 144 transitions. [2024-10-31 22:18:45,234 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 144 transitions. Word has length 324 [2024-10-31 22:18:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:45,235 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 144 transitions. [2024-10-31 22:18:45,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 32 states have internal predecessors, (79), 23 states have call successors, (28), 1 states have call predecessors, (28), 12 states have return successors, (41), 23 states have call predecessors, (41), 23 states have call successors, (41) [2024-10-31 22:18:45,236 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 144 transitions. [2024-10-31 22:18:45,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-10-31 22:18:45,248 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:45,248 INFO L215 NwaCegarLoop]: trace histogram [77, 77, 62, 38, 38, 38, 38, 38, 38, 38, 24, 15, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:45,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-31 22:18:45,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:45,453 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:45,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:45,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1042599522, now seen corresponding path program 7 times [2024-10-31 22:18:45,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:45,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299124661] [2024-10-31 22:18:45,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:45,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:45,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:18:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:46,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:46,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:18:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-31 22:18:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-31 22:18:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:18:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-31 22:18:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:47,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:18:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-31 22:18:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-31 22:18:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-31 22:18:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-31 22:18:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:18:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:18:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 16407 backedges. 2818 proven. 2810 refuted. 0 times theorem prover too weak. 10779 trivial. 0 not checked. [2024-10-31 22:18:48,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:48,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299124661] [2024-10-31 22:18:48,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299124661] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:48,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060566769] [2024-10-31 22:18:48,496 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-31 22:18:48,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:48,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:48,498 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:48,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ccb0489-d00c-4038-a638-20e8c11a2cac/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 22:18:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:48,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 1191 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-31 22:18:48,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 16407 backedges. 386 proven. 2689 refuted. 0 times theorem prover too weak. 13332 trivial. 0 not checked. [2024-10-31 22:18:49,023 INFO L311 TraceCheckSpWp]: Computing backward predicates...