./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e210f4af0021f1e0c887bbfa24b18aad98424108efaad4cfc57802fd9fd5ce53 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:13:31,983 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:13:32,088 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:13:32,094 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:13:32,094 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:13:32,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:13:32,121 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:13:32,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:13:32,122 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:13:32,122 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:13:32,122 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:13:32,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:13:32,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:13:32,123 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:13:32,124 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:13:32,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:13:32,125 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:13:32,125 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:13:32,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:13:32,125 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:13:32,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:13:32,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:13:32,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:13:32,126 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:13:32,126 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:13:32,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:13:32,127 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:13:32,127 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:13:32,127 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:13:32,127 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:13:32,127 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:13:32,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:13:32,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:13:32,128 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:13:32,128 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:13:32,128 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:13:32,129 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:13:32,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:13:32,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:13:32,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:13:32,129 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:13:32,130 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:13:32,130 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:13:32,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:13:32,130 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:13:32,130 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:13:32,130 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:13:32,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:13:32,130 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e210f4af0021f1e0c887bbfa24b18aad98424108efaad4cfc57802fd9fd5ce53 [2024-11-28 04:13:32,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:13:32,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:13:32,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:13:32,482 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:13:32,482 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:13:32,484 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loop-lit/gj2007.i [2024-11-28 04:13:35,571 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/data/5b237a13d/77fc93e1557f43c895292e9bcc70d993/FLAG3dff6eb18 [2024-11-28 04:13:35,849 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:13:35,852 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/sv-benchmarks/c/loop-lit/gj2007.i [2024-11-28 04:13:35,859 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/data/5b237a13d/77fc93e1557f43c895292e9bcc70d993/FLAG3dff6eb18 [2024-11-28 04:13:35,873 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/data/5b237a13d/77fc93e1557f43c895292e9bcc70d993 [2024-11-28 04:13:35,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:13:35,877 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:13:35,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:13:35,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:13:35,883 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:13:35,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:13:35" (1/1) ... [2024-11-28 04:13:35,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b73789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:35, skipping insertion in model container [2024-11-28 04:13:35,885 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:13:35" (1/1) ... [2024-11-28 04:13:35,900 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:13:36,063 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/sv-benchmarks/c/loop-lit/gj2007.i[895,908] [2024-11-28 04:13:36,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:13:36,093 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:13:36,111 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/sv-benchmarks/c/loop-lit/gj2007.i[895,908] [2024-11-28 04:13:36,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:13:36,137 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:13:36,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36 WrapperNode [2024-11-28 04:13:36,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:13:36,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:13:36,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:13:36,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:13:36,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36" (1/1) ... [2024-11-28 04:13:36,165 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36" (1/1) ... [2024-11-28 04:13:36,185 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2024-11-28 04:13:36,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:13:36,187 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:13:36,188 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:13:36,188 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:13:36,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36" (1/1) ... [2024-11-28 04:13:36,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36" (1/1) ... [2024-11-28 04:13:36,198 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36" (1/1) ... [2024-11-28 04:13:36,210 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:13:36,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36" (1/1) ... [2024-11-28 04:13:36,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36" (1/1) ... [2024-11-28 04:13:36,213 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36" (1/1) ... [2024-11-28 04:13:36,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36" (1/1) ... [2024-11-28 04:13:36,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36" (1/1) ... [2024-11-28 04:13:36,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36" (1/1) ... [2024-11-28 04:13:36,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36" (1/1) ... [2024-11-28 04:13:36,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:13:36,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:13:36,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:13:36,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:13:36,230 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36" (1/1) ... [2024-11-28 04:13:36,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:13:36,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:36,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:13:36,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:13:36,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:13:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:13:36,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:13:36,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:13:36,371 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:13:36,374 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:13:36,502 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-28 04:13:36,503 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:13:36,513 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:13:36,513 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:13:36,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:13:36 BoogieIcfgContainer [2024-11-28 04:13:36,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:13:36,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:13:36,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:13:36,522 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:13:36,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:13:35" (1/3) ... [2024-11-28 04:13:36,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6446f9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:13:36, skipping insertion in model container [2024-11-28 04:13:36,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:13:36" (2/3) ... [2024-11-28 04:13:36,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6446f9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:13:36, skipping insertion in model container [2024-11-28 04:13:36,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:13:36" (3/3) ... [2024-11-28 04:13:36,525 INFO L128 eAbstractionObserver]: Analyzing ICFG gj2007.i [2024-11-28 04:13:36,543 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:13:36,545 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gj2007.i that has 1 procedures, 12 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:13:36,619 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:13:36,638 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;@1359b10c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:13:36,639 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:13:36,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:36,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:13:36,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:36,654 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:13:36,654 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:36,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:36,663 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2024-11-28 04:13:36,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:36,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659869314] [2024-11-28 04:13:36,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:36,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:36,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:36,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659869314] [2024-11-28 04:13:36,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659869314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:36,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:13:36,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:13:36,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009651944] [2024-11-28 04:13:36,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:36,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:13:36,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:36,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:13:36,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:13:36,829 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:36,839 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2024-11-28 04:13:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:13:36,842 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 04:13:36,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:36,850 INFO L225 Difference]: With dead ends: 20 [2024-11-28 04:13:36,850 INFO L226 Difference]: Without dead ends: 8 [2024-11-28 04:13:36,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:13:36,857 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:36,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:13:36,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-11-28 04:13:36,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-28 04:13:36,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:36,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2024-11-28 04:13:36,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2024-11-28 04:13:36,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:36,889 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-28 04:13:36,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:36,890 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2024-11-28 04:13:36,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:13:36,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:36,890 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:13:36,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:13:36,891 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:36,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash 889669584, now seen corresponding path program 1 times [2024-11-28 04:13:36,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:36,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860877298] [2024-11-28 04:13:36,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:36,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:36,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:36,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860877298] [2024-11-28 04:13:36,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860877298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:13:36,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:13:36,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:13:36,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201423721] [2024-11-28 04:13:36,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:13:36,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:13:36,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:36,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:13:36,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:36,992 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:37,019 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2024-11-28 04:13:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:13:37,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 04:13:37,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:37,020 INFO L225 Difference]: With dead ends: 16 [2024-11-28 04:13:37,020 INFO L226 Difference]: Without dead ends: 10 [2024-11-28 04:13:37,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:13:37,021 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:37,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:13:37,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-28 04:13:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-28 04:13:37,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-11-28 04:13:37,024 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2024-11-28 04:13:37,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:37,024 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-11-28 04:13:37,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2024-11-28 04:13:37,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:13:37,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:37,025 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:37,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:13:37,025 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:37,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash 209834262, now seen corresponding path program 1 times [2024-11-28 04:13:37,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:37,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42300393] [2024-11-28 04:13:37,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:37,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:37,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42300393] [2024-11-28 04:13:37,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42300393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:37,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068566301] [2024-11-28 04:13:37,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:37,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:37,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:37,109 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:37,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:13:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:37,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:13:37,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:37,214 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:37,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068566301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:13:37,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:13:37,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 04:13:37,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973790267] [2024-11-28 04:13:37,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:37,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:13:37,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:37,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:13:37,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:13:37,258 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:37,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:37,325 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2024-11-28 04:13:37,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:13:37,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 04:13:37,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:37,326 INFO L225 Difference]: With dead ends: 21 [2024-11-28 04:13:37,326 INFO L226 Difference]: Without dead ends: 15 [2024-11-28 04:13:37,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:13:37,330 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:37,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:13:37,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-28 04:13:37,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-28 04:13:37,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:37,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-28 04:13:37,336 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2024-11-28 04:13:37,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:37,336 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-28 04:13:37,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-28 04:13:37,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 04:13:37,337 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:37,337 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:37,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:13:37,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:37,542 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:37,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:37,542 INFO L85 PathProgramCache]: Analyzing trace with hash -218875540, now seen corresponding path program 1 times [2024-11-28 04:13:37,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:37,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779917115] [2024-11-28 04:13:37,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:37,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:13:37,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:37,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779917115] [2024-11-28 04:13:37,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779917115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:37,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990004350] [2024-11-28 04:13:37,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:13:37,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:37,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:37,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:37,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:13:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:37,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:13:37,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:37,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:13:37,825 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:13:37,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990004350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:13:37,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:13:37,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-28 04:13:37,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494217531] [2024-11-28 04:13:37,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:37,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:13:37,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:37,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:13:37,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:13:37,895 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:37,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:37,961 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-11-28 04:13:37,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:13:37,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-28 04:13:37,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:37,963 INFO L225 Difference]: With dead ends: 32 [2024-11-28 04:13:37,963 INFO L226 Difference]: Without dead ends: 23 [2024-11-28 04:13:37,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:13:37,965 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:37,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:13:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-28 04:13:37,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-28 04:13:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-28 04:13:37,975 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2024-11-28 04:13:37,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:37,976 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-28 04:13:37,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:37,976 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-28 04:13:37,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 04:13:37,977 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:37,977 INFO L218 NwaCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:37,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:13:38,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:38,178 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:38,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash 978775428, now seen corresponding path program 2 times [2024-11-28 04:13:38,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:38,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097210671] [2024-11-28 04:13:38,179 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:13:38,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:38,197 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:13:38,198 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:13:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:13:38,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:38,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097210671] [2024-11-28 04:13:38,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097210671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:38,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36951756] [2024-11-28 04:13:38,396 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:13:38,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:38,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:38,398 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:38,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:13:38,452 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:13:38,452 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:13:38,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:13:38,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:13:38,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:38,723 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:13:38,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36951756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:13:38,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:13:38,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-28 04:13:38,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95737338] [2024-11-28 04:13:38,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:38,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:13:38,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:38,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:13:38,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:13:38,725 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:38,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:38,798 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-11-28 04:13:38,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:13:38,799 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-28 04:13:38,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:38,800 INFO L225 Difference]: With dead ends: 48 [2024-11-28 04:13:38,800 INFO L226 Difference]: Without dead ends: 39 [2024-11-28 04:13:38,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:13:38,801 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 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 [2024-11-28 04:13:38,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:13:38,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-28 04:13:38,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-28 04:13:38,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-11-28 04:13:38,808 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 22 [2024-11-28 04:13:38,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:38,808 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-11-28 04:13:38,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:38,809 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-11-28 04:13:38,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 04:13:38,810 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:38,810 INFO L218 NwaCegarLoop]: trace histogram [16, 14, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:38,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:13:39,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:39,014 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:39,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:39,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1201114548, now seen corresponding path program 3 times [2024-11-28 04:13:39,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:39,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705832919] [2024-11-28 04:13:39,015 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:13:39,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:39,034 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 04:13:39,035 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:13:39,089 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-28 04:13:39,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:39,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705832919] [2024-11-28 04:13:39,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705832919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:39,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765921516] [2024-11-28 04:13:39,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:13:39,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:39,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:39,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:39,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:13:39,135 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 04:13:39,135 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:13:39,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:13:39,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-28 04:13:39,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-28 04:13:39,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765921516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:13:39,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:13:39,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-28 04:13:39,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805872439] [2024-11-28 04:13:39,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:39,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:13:39,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:39,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:13:39,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:13:39,205 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:39,240 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2024-11-28 04:13:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:13:39,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-28 04:13:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:39,242 INFO L225 Difference]: With dead ends: 51 [2024-11-28 04:13:39,243 INFO L226 Difference]: Without dead ends: 47 [2024-11-28 04:13:39,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:13:39,243 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:39,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:13:39,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-28 04:13:39,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-28 04:13:39,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:39,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-11-28 04:13:39,252 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 38 [2024-11-28 04:13:39,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:39,252 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-11-28 04:13:39,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:39,252 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-11-28 04:13:39,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 04:13:39,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:39,253 INFO L218 NwaCegarLoop]: trace histogram [20, 14, 6, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:39,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:13:39,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:13:39,457 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:39,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:39,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1186242260, now seen corresponding path program 4 times [2024-11-28 04:13:39,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:39,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750529154] [2024-11-28 04:13:39,458 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:13:39,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:39,478 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:13:39,478 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:13:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 165 proven. 210 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:13:39,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:39,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750529154] [2024-11-28 04:13:39,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750529154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:39,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836747637] [2024-11-28 04:13:39,886 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:13:39,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:39,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:39,888 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:39,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:13:39,946 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:13:39,946 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:13:39,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:13:39,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 165 proven. 210 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:13:40,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 165 proven. 210 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:13:40,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836747637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:13:40,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:13:40,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-28 04:13:40,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616228644] [2024-11-28 04:13:40,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:40,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 04:13:40,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:40,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 04:13:40,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:13:40,592 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:40,748 INFO L93 Difference]: Finished difference Result 96 states and 124 transitions. [2024-11-28 04:13:40,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 04:13:40,749 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-28 04:13:40,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:40,750 INFO L225 Difference]: With dead ends: 96 [2024-11-28 04:13:40,750 INFO L226 Difference]: Without dead ends: 79 [2024-11-28 04:13:40,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:13:40,755 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:40,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:13:40,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-28 04:13:40,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-28 04:13:40,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.0897435897435896) internal successors, (85), 78 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2024-11-28 04:13:40,778 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 46 [2024-11-28 04:13:40,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:40,783 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2024-11-28 04:13:40,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:40,783 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2024-11-28 04:13:40,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:13:40,785 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:40,785 INFO L218 NwaCegarLoop]: trace histogram [36, 30, 6, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:40,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:13:40,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:13:40,985 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:40,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:40,986 INFO L85 PathProgramCache]: Analyzing trace with hash -749969612, now seen corresponding path program 5 times [2024-11-28 04:13:40,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:40,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240594632] [2024-11-28 04:13:40,986 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:13:40,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:41,044 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-11-28 04:13:41,044 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:13:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 390 proven. 36 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2024-11-28 04:13:41,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:41,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240594632] [2024-11-28 04:13:41,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240594632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:41,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008434285] [2024-11-28 04:13:41,316 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:13:41,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:41,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:41,322 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:41,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:13:41,409 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-11-28 04:13:41,409 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:13:41,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:13:41,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 341 proven. 930 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:13:42,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 341 proven. 930 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:13:43,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008434285] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:13:43,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:13:43,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 33, 33] total 59 [2024-11-28 04:13:43,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528455555] [2024-11-28 04:13:43,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:43,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-28 04:13:43,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:43,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-28 04:13:43,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 04:13:43,604 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:43,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:43,897 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2024-11-28 04:13:43,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-28 04:13:43,898 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-28 04:13:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:43,900 INFO L225 Difference]: With dead ends: 139 [2024-11-28 04:13:43,900 INFO L226 Difference]: Without dead ends: 122 [2024-11-28 04:13:43,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 94 SyntacticMatches, 12 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 04:13:43,907 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:43,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:13:43,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-28 04:13:43,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2024-11-28 04:13:43,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0666666666666667) internal successors, (128), 120 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:43,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 128 transitions. [2024-11-28 04:13:43,928 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 128 transitions. Word has length 78 [2024-11-28 04:13:43,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:43,928 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 128 transitions. [2024-11-28 04:13:43,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:43,928 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 128 transitions. [2024-11-28 04:13:43,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-28 04:13:43,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:43,930 INFO L218 NwaCegarLoop]: trace histogram [57, 50, 7, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:43,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:13:44,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:13:44,134 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:44,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:44,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1519033100, now seen corresponding path program 6 times [2024-11-28 04:13:44,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:44,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007798433] [2024-11-28 04:13:44,135 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:13:44,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:44,191 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-11-28 04:13:44,191 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:13:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 750 proven. 49 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2024-11-28 04:13:44,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:44,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007798433] [2024-11-28 04:13:44,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007798433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:44,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446217684] [2024-11-28 04:13:44,400 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:13:44,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:44,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:44,402 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:44,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:13:44,493 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-11-28 04:13:44,493 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:13:44,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:13:44,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:44,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 750 proven. 49 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2024-11-28 04:13:44,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 750 proven. 49 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2024-11-28 04:13:44,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446217684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:13:44,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:13:44,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-28 04:13:44,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456003569] [2024-11-28 04:13:44,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:44,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:13:44,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:44,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:13:44,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:13:44,732 INFO L87 Difference]: Start difference. First operand 121 states and 128 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:44,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:44,815 INFO L93 Difference]: Finished difference Result 143 states and 167 transitions. [2024-11-28 04:13:44,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:13:44,815 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-11-28 04:13:44,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:44,817 INFO L225 Difference]: With dead ends: 143 [2024-11-28 04:13:44,817 INFO L226 Difference]: Without dead ends: 139 [2024-11-28 04:13:44,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:13:44,818 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:44,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:13:44,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-28 04:13:44,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-11-28 04:13:44,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.1231884057971016) internal successors, (155), 138 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:44,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 155 transitions. [2024-11-28 04:13:44,835 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 155 transitions. Word has length 120 [2024-11-28 04:13:44,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:44,836 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 155 transitions. [2024-11-28 04:13:44,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 155 transitions. [2024-11-28 04:13:44,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 04:13:44,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:44,838 INFO L218 NwaCegarLoop]: trace histogram [66, 50, 16, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:44,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:13:45,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:45,042 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:45,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:45,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1225632132, now seen corresponding path program 7 times [2024-11-28 04:13:45,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:45,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340950584] [2024-11-28 04:13:45,043 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:13:45,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:49,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:49,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340950584] [2024-11-28 04:13:49,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340950584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:49,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467226128] [2024-11-28 04:13:49,015 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:13:49,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:49,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:49,016 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:49,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:13:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:13:49,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-28 04:13:49,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:49,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:13:53,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467226128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:13:53,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:13:53,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 103 [2024-11-28 04:13:53,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393954541] [2024-11-28 04:13:53,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:53,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-28 04:13:53,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:53,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-28 04:13:53,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 04:13:53,455 INFO L87 Difference]: Start difference. First operand 139 states and 155 transitions. Second operand has 103 states, 103 states have (on average 2.1844660194174756) internal successors, (225), 103 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:54,292 INFO L93 Difference]: Finished difference Result 211 states and 294 transitions. [2024-11-28 04:13:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-28 04:13:54,292 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.1844660194174756) internal successors, (225), 103 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2024-11-28 04:13:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:54,294 INFO L225 Difference]: With dead ends: 211 [2024-11-28 04:13:54,294 INFO L226 Difference]: Without dead ends: 207 [2024-11-28 04:13:54,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 208 SyntacticMatches, 34 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 04:13:54,297 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:54,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:13:54,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-28 04:13:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-28 04:13:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.2475728155339805) internal successors, (257), 206 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 257 transitions. [2024-11-28 04:13:54,313 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 257 transitions. Word has length 138 [2024-11-28 04:13:54,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:13:54,313 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 257 transitions. [2024-11-28 04:13:54,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.1844660194174756) internal successors, (225), 103 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 257 transitions. [2024-11-28 04:13:54,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-28 04:13:54,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:13:54,317 INFO L218 NwaCegarLoop]: trace histogram [100, 50, 50, 1, 1, 1, 1, 1, 1] [2024-11-28 04:13:54,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:13:54,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:54,518 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:13:54,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:13:54,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1731061772, now seen corresponding path program 8 times [2024-11-28 04:13:54,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:13:54,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998086079] [2024-11-28 04:13:54,519 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:13:54,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:13:54,587 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:13:54,587 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:13:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2024-11-28 04:13:57,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:13:57,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998086079] [2024-11-28 04:13:57,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998086079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:13:57,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442727045] [2024-11-28 04:13:57,320 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:13:57,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:13:57,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:13:57,322 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:13:57,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:13:57,459 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:13:57,459 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:13:57,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-28 04:13:57,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:13:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2024-11-28 04:13:57,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:13:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2024-11-28 04:13:58,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442727045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:13:58,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:13:58,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 55 [2024-11-28 04:13:58,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902858391] [2024-11-28 04:13:58,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:13:58,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-28 04:13:58,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:13:58,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-28 04:13:58,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 04:13:58,283 INFO L87 Difference]: Start difference. First operand 207 states and 257 transitions. Second operand has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:13:59,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:13:59,940 INFO L93 Difference]: Finished difference Result 2862 states and 4237 transitions. [2024-11-28 04:13:59,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-28 04:13:59,941 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2024-11-28 04:13:59,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:13:59,954 INFO L225 Difference]: With dead ends: 2862 [2024-11-28 04:13:59,954 INFO L226 Difference]: Without dead ends: 2858 [2024-11-28 04:13:59,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 04:13:59,957 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 51 mSDsluCounter, 5410 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 5517 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:13:59,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 5517 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2757 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 04:13:59,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2024-11-28 04:14:00,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 209. [2024-11-28 04:14:00,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.25) internal successors, (260), 208 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:00,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 260 transitions. [2024-11-28 04:14:00,033 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 260 transitions. Word has length 206 [2024-11-28 04:14:00,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:00,034 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 260 transitions. [2024-11-28 04:14:00,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:00,034 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 260 transitions. [2024-11-28 04:14:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-28 04:14:00,037 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:00,037 INFO L218 NwaCegarLoop]: trace histogram [101, 51, 50, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:00,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:14:00,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:00,238 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:14:00,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:00,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1335722324, now seen corresponding path program 9 times [2024-11-28 04:14:00,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:14:00,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039611204] [2024-11-28 04:14:00,238 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:14:00,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:14:00,338 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2024-11-28 04:14:00,338 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 10002 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:07,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:14:07,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039611204] [2024-11-28 04:14:07,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039611204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:07,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491100525] [2024-11-28 04:14:07,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:14:07,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:07,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:07,229 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:07,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:14:07,466 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2024-11-28 04:14:07,466 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:14:07,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-28 04:14:07,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 10201 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:07,850 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:14:07,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491100525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:14:07,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:14:07,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [103] total 104 [2024-11-28 04:14:07,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524260959] [2024-11-28 04:14:07,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:14:07,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-28 04:14:07,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:14:07,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-28 04:14:07,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5256, Invalid=5456, Unknown=0, NotChecked=0, Total=10712 [2024-11-28 04:14:07,857 INFO L87 Difference]: Start difference. First operand 209 states and 260 transitions. Second operand has 103 states, 103 states have (on average 2.0194174757281553) internal successors, (208), 103 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:08,801 INFO L93 Difference]: Finished difference Result 310 states and 411 transitions. [2024-11-28 04:14:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-28 04:14:08,802 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0194174757281553) internal successors, (208), 103 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2024-11-28 04:14:08,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:08,803 INFO L225 Difference]: With dead ends: 310 [2024-11-28 04:14:08,804 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 04:14:08,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=5256, Invalid=5456, Unknown=0, NotChecked=0, Total=10712 [2024-11-28 04:14:08,808 INFO L435 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:08,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:14:08,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 04:14:08,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 04:14:08,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 04:14:08,810 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 208 [2024-11-28 04:14:08,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:08,810 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 04:14:08,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.0194174757281553) internal successors, (208), 103 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:14:08,811 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 04:14:08,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 04:14:08,814 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 04:14:08,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:14:09,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:09,023 INFO L422 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1] [2024-11-28 04:14:09,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 04:14:12,246 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:14:12,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:14:12 BoogieIcfgContainer [2024-11-28 04:14:12,306 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:14:12,307 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:14:12,307 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:14:12,307 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:14:12,312 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:13:36" (3/4) ... [2024-11-28 04:14:12,315 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 04:14:12,329 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-28 04:14:12,329 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 04:14:12,330 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 04:14:12,330 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 04:14:12,431 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:14:12,432 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:14:12,432 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:14:12,433 INFO L158 Benchmark]: Toolchain (without parser) took 36556.33ms. Allocated memory was 142.6MB in the beginning and 562.0MB in the end (delta: 419.4MB). Free memory was 105.7MB in the beginning and 401.7MB in the end (delta: -296.0MB). Peak memory consumption was 122.1MB. Max. memory is 16.1GB. [2024-11-28 04:14:12,433 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 167.8MB. Free memory was 104.3MB in the beginning and 103.6MB in the end (delta: 671.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:14:12,434 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.65ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 94.7MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:14:12,434 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.81ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 93.8MB in the end (delta: 982.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:14:12,435 INFO L158 Benchmark]: Boogie Preprocessor took 37.12ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 92.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:14:12,435 INFO L158 Benchmark]: RCFGBuilder took 285.20ms. Allocated memory is still 142.6MB. Free memory was 92.5MB in the beginning and 83.4MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:14:12,435 INFO L158 Benchmark]: TraceAbstraction took 35790.20ms. Allocated memory was 142.6MB in the beginning and 562.0MB in the end (delta: 419.4MB). Free memory was 82.8MB in the beginning and 410.0MB in the end (delta: -327.2MB). Peak memory consumption was 298.9MB. Max. memory is 16.1GB. [2024-11-28 04:14:12,436 INFO L158 Benchmark]: Witness Printer took 124.85ms. Allocated memory is still 562.0MB. Free memory was 410.0MB in the beginning and 401.7MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:14:12,438 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 167.8MB. Free memory was 104.3MB in the beginning and 103.6MB in the end (delta: 671.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.65ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 94.7MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.81ms. Allocated memory is still 142.6MB. Free memory was 94.7MB in the beginning and 93.8MB in the end (delta: 982.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.12ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 92.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 285.20ms. Allocated memory is still 142.6MB. Free memory was 92.5MB in the beginning and 83.4MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 35790.20ms. Allocated memory was 142.6MB in the beginning and 562.0MB in the end (delta: 419.4MB). Free memory was 82.8MB in the beginning and 410.0MB in the end (delta: -327.2MB). Peak memory consumption was 298.9MB. Max. memory is 16.1GB. * Witness Printer took 124.85ms. Allocated memory is still 562.0MB. Free memory was 410.0MB in the beginning and 401.7MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.4s, OverallIterations: 12, TraceHistogramMax: 101, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 5718 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5538 mSDsCounter, 170 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4303 IncrementalHoareTripleChecker+Invalid, 4473 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 170 mSolverCounterUnsat, 180 mSDtfsCounter, 4303 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1819 GetRequests, 1378 SyntacticMatches, 47 SemanticMatches, 394 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3275 ImplicationChecksByTransitivity, 15.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=11, InterpolantAutomatonStates: 411, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 2650 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 24.1s InterpolantComputationTime, 1768 NumberOfCodeBlocks, 1616 NumberOfCodeBlocksAsserted, 372 NumberOfCheckSat, 2407 ConstructedInterpolants, 0 QuantifiedInterpolants, 5942 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2058 ConjunctsInSsa, 353 ConjunctsInUnsatCore, 31 InterpolantComputations, 3 PerfectInterpolantSequences, 40867/79316 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((22 == x) && (y == 50)) || ((x == 48) && (y == 50))) || ((x == 36) && (y == 50))) || ((x == 38) && (y == 50))) || ((87 == x) && (87 == y))) || ((y == 55) && (x == 55))) || ((3 == x) && (y == 50))) || ((x == 54) && (y == 54))) || ((y == 90) && (x == 90))) || ((100 <= x) && (y == 100))) || ((67 == x) && (67 == y))) || ((84 == x) && (84 == y))) || ((y == 80) && (x == 80))) || ((5 == x) && (y == 50))) || ((y == 50) && (x == 33))) || ((77 == y) && (77 == x))) || ((81 == x) && (81 == y))) || ((y == 50) && (42 == x))) || ((y == 50) && (x == 37))) || ((y == 85) && (x == 85))) || ((y == 58) && (x == 58))) || ((x == 34) && (y == 50))) || ((69 == x) && (69 == y))) || ((y == 50) && (x == 10))) || ((x == 1) && (y == 50))) || ((x == 11) && (y == 50))) || ((59 == y) && (59 == x))) || ((51 == x) && (51 == y))) || ((71 == y) && (71 == x))) || ((y == 50) && (29 == x))) || ((2 == x) && (y == 50))) || ((y == 50) && (x == 27))) || ((x == 26) && (y == 50))) || ((y == 50) && (x == 0))) || ((y == 50) && (x == 25))) || ((56 == y) && (56 == x))) || ((y == 50) && (x == 12))) || ((y == 50) && (x == 39))) || ((y == 50) && (x == 20))) || ((y == 50) && (30 == x))) || ((57 == y) && (57 == x))) || ((9 == x) && (y == 50))) || ((x == 63) && (y == 63))) || ((x == 15) && (y == 50))) || ((x == 83) && (y == 83))) || ((72 == y) && (72 == x))) || ((66 == y) && (66 == x))) || ((41 == x) && (y == 50))) || ((y == 50) && (6 == x))) || ((62 == y) && (62 == x))) || ((x == 73) && (y == 73))) || ((32 == x) && (y == 50))) || ((x == 79) && (y == 79))) || ((x == 24) && (y == 50))) || ((52 == x) && (52 == y))) || ((y == 50) && (47 == x))) || ((x == 8) && (y == 50))) || ((98 == x) && (98 == y))) || ((88 == y) && (88 == x))) || ((y == 50) && (35 == x))) || ((x == 65) && (y == 65))) || ((21 == x) && (y == 50))) || ((89 == x) && (89 == y))) || ((x == 60) && (y == 60))) || ((x == 43) && (y == 50))) || ((76 == x) && (76 == y))) || ((95 == y) && (95 == x))) || ((y == 50) && (14 == x))) || ((y == 50) && (x == 28))) || ((40 == x) && (y == 50))) || ((94 == y) && (94 == x))) || ((x == 70) && (y == 70))) || ((7 == x) && (y == 50))) || ((31 == x) && (y == 50))) || ((y == 50) && (x == 45))) || ((y == 50) && (x == 17))) || ((53 == x) && (53 == y))) || ((x == 78) && (y == 78))) || ((y == 74) && (x == 74))) || ((y == 50) && (49 == x))) || ((x == 86) && (y == 86))) || ((68 == y) && (68 == x))) || ((x == 13) && (y == 50))) || ((23 == x) && (y == 50))) || ((y == 50) && (44 == x))) || ((y == 75) && (x == 75))) || ((x == 99) && (y == 99))) || ((y == 61) && (x == 61))) || ((y == 50) && (x == 50))) || ((46 == x) && (y == 50))) || ((97 == y) && (97 == x))) || ((y == 50) && (x == 18))) || ((92 == x) && (92 == y))) || ((y == 50) && (x == 4))) || ((x == 96) && (y == 96))) || ((x == 93) && (y == 93))) || ((64 == x) && (64 == y))) || ((16 == x) && (y == 50))) || ((82 == y) && (82 == x))) || ((91 == x) && (91 == y))) || ((y == 50) && (19 == x))) RESULT: Ultimate proved your program to be correct! [2024-11-28 04:14:12,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fef70e6b-085d-4ce8-be45-6d185bdb8550/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE