./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-programs/copysome2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-programs/copysome2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f2acf1d88f73f9b993c11cfca399c08f166d9054c3a2d816b9c02e1296c27b35 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:30:50,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:30:50,975 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:30:50,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:30:50,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:30:51,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:30:51,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:30:51,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:30:51,024 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:30:51,024 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:30:51,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:30:51,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:30:51,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:30:51,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:30:51,026 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:30:51,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:30:51,026 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:30:51,027 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:30:51,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:30:51,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:30:51,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:30:51,027 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:30:51,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:30:51,028 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:30:51,028 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:30:51,028 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:30:51,028 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:30:51,029 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:30:51,029 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:30:51,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:30:51,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:30:51,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:30:51,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:30:51,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:30:51,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:30:51,030 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:30:51,031 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:30:51,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:30:51,031 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:30:51,031 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:30:51,031 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:30:51,031 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:30:51,031 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_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2acf1d88f73f9b993c11cfca399c08f166d9054c3a2d816b9c02e1296c27b35 [2024-11-13 14:30:51,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:30:51,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:30:51,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:30:51,408 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:30:51,408 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:30:51,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-programs/copysome2-1.i Unable to find full path for "g++" [2024-11-13 14:30:53,569 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:30:53,830 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:30:53,831 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/sv-benchmarks/c/array-programs/copysome2-1.i [2024-11-13 14:30:53,838 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/data/eed2af543/a0d9a4645dab453d98427f6f2d222328/FLAG877f1d922 [2024-11-13 14:30:53,853 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/data/eed2af543/a0d9a4645dab453d98427f6f2d222328 [2024-11-13 14:30:53,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:30:53,857 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:30:53,859 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:30:53,859 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:30:53,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:30:53,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:30:53" (1/1) ... [2024-11-13 14:30:53,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f634ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:53, skipping insertion in model container [2024-11-13 14:30:53,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:30:53" (1/1) ... [2024-11-13 14:30:53,881 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:30:54,046 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_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/sv-benchmarks/c/array-programs/copysome2-1.i[804,817] [2024-11-13 14:30:54,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:30:54,083 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:30:54,095 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_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/sv-benchmarks/c/array-programs/copysome2-1.i[804,817] [2024-11-13 14:30:54,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:30:54,120 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:30:54,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:54 WrapperNode [2024-11-13 14:30:54,121 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:30:54,122 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:30:54,122 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:30:54,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:30:54,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:54" (1/1) ... [2024-11-13 14:30:54,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:54" (1/1) ... [2024-11-13 14:30:54,163 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2024-11-13 14:30:54,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:30:54,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:30:54,167 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:30:54,167 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:30:54,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:54" (1/1) ... [2024-11-13 14:30:54,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:54" (1/1) ... [2024-11-13 14:30:54,185 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:54" (1/1) ... [2024-11-13 14:30:54,208 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 3, 4, 4]. 31 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 2, 1, 3]. [2024-11-13 14:30:54,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:54" (1/1) ... [2024-11-13 14:30:54,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:54" (1/1) ... [2024-11-13 14:30:54,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:54" (1/1) ... [2024-11-13 14:30:54,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:54" (1/1) ... [2024-11-13 14:30:54,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:54" (1/1) ... [2024-11-13 14:30:54,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:54" (1/1) ... [2024-11-13 14:30:54,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:30:54,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:30:54,236 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:30:54,236 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:30:54,241 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:54" (1/1) ... [2024-11-13 14:30:54,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:30:54,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:54,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:30:54,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:30:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:30:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:30:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:30:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:30:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 14:30:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:30:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:30:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:30:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 14:30:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 14:30:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:30:54,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:30:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:30:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:30:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 14:30:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 14:30:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:30:54,408 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:30:54,411 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:30:54,603 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-13 14:30:54,603 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:30:54,615 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:30:54,615 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 14:30:54,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:30:54 BoogieIcfgContainer [2024-11-13 14:30:54,615 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:30:54,619 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:30:54,619 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:30:54,625 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:30:54,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:30:53" (1/3) ... [2024-11-13 14:30:54,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404eb91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:30:54, skipping insertion in model container [2024-11-13 14:30:54,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:30:54" (2/3) ... [2024-11-13 14:30:54,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404eb91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:30:54, skipping insertion in model container [2024-11-13 14:30:54,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:30:54" (3/3) ... [2024-11-13 14:30:54,627 INFO L112 eAbstractionObserver]: Analyzing ICFG copysome2-1.i [2024-11-13 14:30:54,646 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:30:54,648 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG copysome2-1.i that has 1 procedures, 21 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-13 14:30:54,729 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:30:54,749 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;@79854b73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:30:54,750 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:30:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:30:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 14:30:54,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:54,764 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:30:54,765 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:54,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:54,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1646385914, now seen corresponding path program 1 times [2024-11-13 14:30:54,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:54,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830366413] [2024-11-13 14:30:54,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:54,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:55,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:55,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830366413] [2024-11-13 14:30:55,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830366413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:30:55,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:30:55,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:30:55,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186047246] [2024-11-13 14:30:55,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:30:55,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:30:55,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:55,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:30:55,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:30:55,079 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2024-11-13 14:30:55,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:55,166 INFO L93 Difference]: Finished difference Result 46 states and 72 transitions. [2024-11-13 14:30:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:30:55,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) Word has length 11 [2024-11-13 14:30:55,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:55,175 INFO L225 Difference]: With dead ends: 46 [2024-11-13 14:30:55,176 INFO L226 Difference]: Without dead ends: 24 [2024-11-13 14:30:55,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:30:55,181 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:55,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:30:55,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-13 14:30:55,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2024-11-13 14:30:55,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 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) [2024-11-13 14:30:55,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-13 14:30:55,214 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2024-11-13 14:30:55,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:55,214 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-13 14:30:55,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2024-11-13 14:30:55,215 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-11-13 14:30:55,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 14:30:55,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:55,216 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:30:55,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:30:55,216 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:55,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:55,217 INFO L85 PathProgramCache]: Analyzing trace with hash -964077122, now seen corresponding path program 1 times [2024-11-13 14:30:55,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:55,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110246618] [2024-11-13 14:30:55,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:55,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:30:55,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:55,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110246618] [2024-11-13 14:30:55,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110246618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:30:55,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523816142] [2024-11-13 14:30:55,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:55,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:55,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:55,467 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:30:55,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:30:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:55,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:30:55,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:30:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:30:55,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:30:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:30:55,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523816142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:30:55,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:30:55,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 14:30:55,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923971301] [2024-11-13 14:30:55,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:30:55,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:30:55,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:55,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:30:55,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:30:55,730 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:30:55,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:55,913 INFO L93 Difference]: Finished difference Result 57 states and 81 transitions. [2024-11-13 14:30:55,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:30:55,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-13 14:30:55,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:55,915 INFO L225 Difference]: With dead ends: 57 [2024-11-13 14:30:55,915 INFO L226 Difference]: Without dead ends: 41 [2024-11-13 14:30:55,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:30:55,917 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:55,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 27 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:30:55,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-13 14:30:55,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-13 14:30:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:30:55,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2024-11-13 14:30:55,926 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 18 [2024-11-13 14:30:55,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:55,926 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2024-11-13 14:30:55,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:30:55,928 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2024-11-13 14:30:55,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 14:30:55,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:55,929 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:30:55,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:30:56,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:56,130 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:56,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:56,131 INFO L85 PathProgramCache]: Analyzing trace with hash -474367301, now seen corresponding path program 2 times [2024-11-13 14:30:56,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:56,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020996205] [2024-11-13 14:30:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:56,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-13 14:30:56,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:56,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020996205] [2024-11-13 14:30:56,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020996205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:30:56,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642417422] [2024-11-13 14:30:56,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:30:56,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:56,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:56,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:30:56,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:30:56,654 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:30:56,655 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:30:56,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:30:56,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:30:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-13 14:30:56,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:30:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-13 14:30:56,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642417422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:30:56,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:30:56,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-13 14:30:56,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312253056] [2024-11-13 14:30:56,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:30:56,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:30:56,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:56,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:30:56,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:30:56,848 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:30:57,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:57,145 INFO L93 Difference]: Finished difference Result 117 states and 168 transitions. [2024-11-13 14:30:57,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:30:57,146 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-13 14:30:57,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:57,147 INFO L225 Difference]: With dead ends: 117 [2024-11-13 14:30:57,147 INFO L226 Difference]: Without dead ends: 83 [2024-11-13 14:30:57,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:30:57,149 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 120 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:57,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 34 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:30:57,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-13 14:30:57,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-13 14:30:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.2926829268292683) internal successors, (106), 82 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:30:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2024-11-13 14:30:57,166 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 39 [2024-11-13 14:30:57,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:57,166 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2024-11-13 14:30:57,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:30:57,167 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2024-11-13 14:30:57,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-13 14:30:57,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:57,169 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:30:57,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:30:57,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:57,372 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:57,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:57,373 INFO L85 PathProgramCache]: Analyzing trace with hash -2109060325, now seen corresponding path program 3 times [2024-11-13 14:30:57,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:57,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063716751] [2024-11-13 14:30:57,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:57,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:58,176 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-11-13 14:30:58,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:58,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063716751] [2024-11-13 14:30:58,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063716751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:30:58,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214979711] [2024-11-13 14:30:58,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:30:58,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:58,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:58,183 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:30:58,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:31:00,391 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-13 14:31:00,392 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:31:00,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 14:31:00,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-11-13 14:31:00,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-11-13 14:31:00,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214979711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:31:00,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:31:00,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-13 14:31:00,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675663813] [2024-11-13 14:31:00,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:31:00,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 14:31:00,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:31:00,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 14:31:00,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-13 14:31:00,877 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 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) [2024-11-13 14:31:01,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:31:01,473 INFO L93 Difference]: Finished difference Result 237 states and 342 transitions. [2024-11-13 14:31:01,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 14:31:01,474 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 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) Word has length 81 [2024-11-13 14:31:01,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:31:01,475 INFO L225 Difference]: With dead ends: 237 [2024-11-13 14:31:01,476 INFO L226 Difference]: Without dead ends: 167 [2024-11-13 14:31:01,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-13 14:31:01,480 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 318 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:31:01,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 48 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:31:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-13 14:31:01,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-13 14:31:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.2891566265060241) internal successors, (214), 166 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:31:01,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 214 transitions. [2024-11-13 14:31:01,507 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 214 transitions. Word has length 81 [2024-11-13 14:31:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:31:01,507 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 214 transitions. [2024-11-13 14:31:01,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 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) [2024-11-13 14:31:01,508 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 214 transitions. [2024-11-13 14:31:01,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-13 14:31:01,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:31:01,512 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:31:01,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:31:01,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:01,717 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:31:01,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:31:01,718 INFO L85 PathProgramCache]: Analyzing trace with hash 661431259, now seen corresponding path program 4 times [2024-11-13 14:31:01,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:31:01,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791226277] [2024-11-13 14:31:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:31:01,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:31:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:31:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2024-11-13 14:31:03,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:31:03,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791226277] [2024-11-13 14:31:03,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791226277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:03,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034802440] [2024-11-13 14:31:03,818 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:31:03,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:31:03,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:31:03,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:31:03,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:32:36,966 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:32:36,966 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:32:37,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 14:32:37,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-13 14:32:37,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2024-11-13 14:32:38,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034802440] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:32:38,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:32:38,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-13 14:32:38,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686036857] [2024-11-13 14:32:38,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:38,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-13 14:32:38,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:38,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-13 14:32:38,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 14:32:38,580 INFO L87 Difference]: Start difference. First operand 167 states and 214 transitions. Second operand has 49 states, 49 states have (on average 3.7346938775510203) internal successors, (183), 49 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:39,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:32:39,921 INFO L93 Difference]: Finished difference Result 477 states and 690 transitions. [2024-11-13 14:32:39,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 14:32:39,922 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.7346938775510203) internal successors, (183), 49 states have internal predecessors, (183), 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 165 [2024-11-13 14:32:39,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:32:39,924 INFO L225 Difference]: With dead ends: 477 [2024-11-13 14:32:39,925 INFO L226 Difference]: Without dead ends: 335 [2024-11-13 14:32:39,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 14:32:39,927 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 606 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:32:39,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 48 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:32:39,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-13 14:32:39,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2024-11-13 14:32:39,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.2874251497005988) internal successors, (430), 334 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:39,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 430 transitions. [2024-11-13 14:32:39,955 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 430 transitions. Word has length 165 [2024-11-13 14:32:39,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:32:39,955 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 430 transitions. [2024-11-13 14:32:39,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.7346938775510203) internal successors, (183), 49 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:39,960 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 430 transitions. [2024-11-13 14:32:39,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-13 14:32:39,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:32:39,966 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:40,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:32:40,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:40,167 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:32:40,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash -182569637, now seen corresponding path program 5 times [2024-11-13 14:32:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:40,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021787653] [2024-11-13 14:32:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:40,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6302 trivial. 0 not checked. [2024-11-13 14:32:45,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:45,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021787653] [2024-11-13 14:32:45,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021787653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:45,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6505709] [2024-11-13 14:32:45,844 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:32:45,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:45,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:45,846 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:45,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1ff5e6d-06b1-4ded-82d6-865f90bc4796/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process