./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/aim-200-3-4-sat-4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/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_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/aim-200-3-4-sat-4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/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_6b2fe409-12a8-4023-8423-236929251063/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 2477edf445d5437553a44f4e5984af9b669bbf835c638ab9d44bdc34251e06f3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:36:27,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:36:27,158 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:36:27,165 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:36:27,165 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:36:27,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:36:27,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:36:27,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:36:27,197 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:36:27,197 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:36:27,197 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:36:27,198 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:36:27,198 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:36:27,198 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:36:27,198 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:36:27,199 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:36:27,199 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:36:27,199 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:36:27,199 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:36:27,199 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:36:27,200 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:36:27,200 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:36:27,200 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:36:27,200 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:36:27,200 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:36:27,201 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:36:27,201 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:36:27,201 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:36:27,201 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:36:27,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:36:27,202 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:36:27,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:36:27,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:36:27,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:36:27,202 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:36:27,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:36:27,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:36:27,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:36:27,203 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:36:27,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:36:27,203 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:36:27,204 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:36:27,204 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:36:27,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:36:27,204 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:36:27,204 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:36:27,205 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:36:27,205 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:36:27,205 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_6b2fe409-12a8-4023-8423-236929251063/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 -> 2477edf445d5437553a44f4e5984af9b669bbf835c638ab9d44bdc34251e06f3 [2024-11-27 23:36:27,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:36:27,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:36:27,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:36:27,532 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:36:27,533 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:36:27,534 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/aim-200-3-4-sat-4.c [2024-11-27 23:36:30,909 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/data/a7946ec21/1016649234a04a8b9f710f20b5c9db20/FLAG3de2075b5 [2024-11-27 23:36:31,471 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:36:31,472 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/sv-benchmarks/c/xcsp/aim-200-3-4-sat-4.c [2024-11-27 23:36:31,495 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/data/a7946ec21/1016649234a04a8b9f710f20b5c9db20/FLAG3de2075b5 [2024-11-27 23:36:31,513 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/data/a7946ec21/1016649234a04a8b9f710f20b5c9db20 [2024-11-27 23:36:31,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:36:31,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:36:31,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:36:31,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:36:31,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:36:31,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:36:31" (1/1) ... [2024-11-27 23:36:31,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6435f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:31, skipping insertion in model container [2024-11-27 23:36:31,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:36:31" (1/1) ... [2024-11-27 23:36:31,621 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:36:32,434 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_6b2fe409-12a8-4023-8423-236929251063/sv-benchmarks/c/xcsp/aim-200-3-4-sat-4.c[58913,58926] [2024-11-27 23:36:32,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:36:32,494 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:36:32,784 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_6b2fe409-12a8-4023-8423-236929251063/sv-benchmarks/c/xcsp/aim-200-3-4-sat-4.c[58913,58926] [2024-11-27 23:36:32,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:36:32,836 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:36:32,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32 WrapperNode [2024-11-27 23:36:32,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:36:32,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:36:32,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:36:32,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:36:32,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32" (1/1) ... [2024-11-27 23:36:32,952 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32" (1/1) ... [2024-11-27 23:36:33,776 INFO L138 Inliner]: procedures = 13, calls = 1050, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13147 [2024-11-27 23:36:33,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:36:33,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:36:33,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:36:33,779 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:36:33,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32" (1/1) ... [2024-11-27 23:36:33,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32" (1/1) ... [2024-11-27 23:36:33,913 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32" (1/1) ... [2024-11-27 23:36:34,144 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 23:36:34,144 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32" (1/1) ... [2024-11-27 23:36:34,144 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32" (1/1) ... [2024-11-27 23:36:34,766 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32" (1/1) ... [2024-11-27 23:36:34,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32" (1/1) ... [2024-11-27 23:36:34,960 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32" (1/1) ... [2024-11-27 23:36:35,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32" (1/1) ... [2024-11-27 23:36:35,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32" (1/1) ... [2024-11-27 23:36:35,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:36:35,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:36:35,219 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:36:35,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:36:35,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32" (1/1) ... [2024-11-27 23:36:35,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:36:35,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:36:35,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:36:35,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:36:35,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:36:35,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:36:35,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:36:35,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:36:35,303 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-27 23:36:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-27 23:36:35,839 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:36:35,841 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:37:08,527 INFO L? ?]: Removed 2834 outVars from TransFormulas that were not future-live. [2024-11-27 23:37:08,527 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:37:08,688 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:37:08,689 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 23:37:08,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:37:08 BoogieIcfgContainer [2024-11-27 23:37:08,690 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:37:08,694 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:37:08,694 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:37:08,702 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:37:08,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:36:31" (1/3) ... [2024-11-27 23:37:08,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df2cc2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:37:08, skipping insertion in model container [2024-11-27 23:37:08,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:36:32" (2/3) ... [2024-11-27 23:37:08,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2df2cc2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:37:08, skipping insertion in model container [2024-11-27 23:37:08,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:37:08" (3/3) ... [2024-11-27 23:37:08,708 INFO L128 eAbstractionObserver]: Analyzing ICFG aim-200-3-4-sat-4.c [2024-11-27 23:37:08,732 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:37:08,733 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aim-200-3-4-sat-4.c that has 2 procedures, 6055 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 23:37:09,010 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:37:09,030 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;@5cad490a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:37:09,030 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:37:09,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 6055 states, 5009 states have (on average 1.55380315432222) internal successors, (7783), 5010 states have internal predecessors, (7783), 1043 states have call successors, (1043), 1 states have call predecessors, (1043), 1 states have return successors, (1043), 1043 states have call predecessors, (1043), 1043 states have call successors, (1043) [2024-11-27 23:37:09,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7448 [2024-11-27 23:37:09,638 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:09,642 INFO L218 NwaCegarLoop]: trace histogram [1043, 1043, 1043, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:09,643 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:09,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash 648782545, now seen corresponding path program 1 times [2024-11-27 23:37:09,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:09,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034951731] [2024-11-27 23:37:09,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:37:09,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:37:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2173612 backedges. 0 proven. 2084 refuted. 0 times theorem prover too weak. 2171528 trivial. 0 not checked. [2024-11-27 23:37:25,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:37:25,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034951731] [2024-11-27 23:37:25,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034951731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:37:25,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33788189] [2024-11-27 23:37:25,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:37:25,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:25,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:37:25,125 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:37:25,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:37:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:37:29,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 14614 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:37:29,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:37:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2173612 backedges. 2084 proven. 0 refuted. 0 times theorem prover too weak. 2171528 trivial. 0 not checked. [2024-11-27 23:37:29,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:37:29,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33788189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:37:29,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:37:29,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:37:29,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3936868] [2024-11-27 23:37:29,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:37:29,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:37:29,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:37:29,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:37:29,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:37:29,978 INFO L87 Difference]: Start difference. First operand has 6055 states, 5009 states have (on average 1.55380315432222) internal successors, (7783), 5010 states have internal predecessors, (7783), 1043 states have call successors, (1043), 1 states have call predecessors, (1043), 1 states have return successors, (1043), 1043 states have call predecessors, (1043), 1043 states have call successors, (1043) Second operand has 2 states, 2 states have (on average 1118.5) internal successors, (2237), 2 states have internal predecessors, (2237), 2 states have call successors, (1043), 2 states have call predecessors, (1043), 1 states have return successors, (1043), 1 states have call predecessors, (1043), 2 states have call successors, (1043) [2024-11-27 23:37:30,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:37:30,639 INFO L93 Difference]: Finished difference Result 12104 states and 20775 transitions. [2024-11-27 23:37:30,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:37:30,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1118.5) internal successors, (2237), 2 states have internal predecessors, (2237), 2 states have call successors, (1043), 2 states have call predecessors, (1043), 1 states have return successors, (1043), 1 states have call predecessors, (1043), 2 states have call successors, (1043) Word has length 7447 [2024-11-27 23:37:30,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:37:30,718 INFO L225 Difference]: With dead ends: 12104 [2024-11-27 23:37:30,718 INFO L226 Difference]: Without dead ends: 6052 [2024-11-27 23:37:30,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7448 GetRequests, 7448 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:37:30,752 INFO L435 NwaCegarLoop]: 9865 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, 9865 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:37:30,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9865 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:37:30,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6052 states. [2024-11-27 23:37:31,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6052 to 6052. [2024-11-27 23:37:31,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6052 states, 5007 states have (on average 1.5536249251048533) internal successors, (7779), 5007 states have internal predecessors, (7779), 1043 states have call successors, (1043), 1 states have call predecessors, (1043), 1 states have return successors, (1043), 1043 states have call predecessors, (1043), 1043 states have call successors, (1043) [2024-11-27 23:37:31,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6052 states to 6052 states and 9865 transitions. [2024-11-27 23:37:31,962 INFO L78 Accepts]: Start accepts. Automaton has 6052 states and 9865 transitions. Word has length 7447 [2024-11-27 23:37:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:37:31,965 INFO L471 AbstractCegarLoop]: Abstraction has 6052 states and 9865 transitions. [2024-11-27 23:37:31,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1118.5) internal successors, (2237), 2 states have internal predecessors, (2237), 2 states have call successors, (1043), 2 states have call predecessors, (1043), 1 states have return successors, (1043), 1 states have call predecessors, (1043), 2 states have call successors, (1043) [2024-11-27 23:37:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 6052 states and 9865 transitions. [2024-11-27 23:37:32,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7448 [2024-11-27 23:37:32,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:37:32,574 INFO L218 NwaCegarLoop]: trace histogram [1043, 1043, 1043, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:37:32,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:37:32,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:37:32,776 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:37:32,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:37:32,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1583216903, now seen corresponding path program 1 times [2024-11-27 23:37:32,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:37:32,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041440662] [2024-11-27 23:37:32,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:37:32,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:37:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:41:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2173612 backedges. 3912 proven. 33204 refuted. 0 times theorem prover too weak. 2136496 trivial. 0 not checked. [2024-11-27 23:41:08,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:41:08,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041440662] [2024-11-27 23:41:08,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041440662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:41:08,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211969698] [2024-11-27 23:41:08,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:41:08,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:41:08,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:41:08,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:41:08,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b2fe409-12a8-4023-8423-236929251063/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:41:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:41:13,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 14614 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-27 23:41:13,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:43:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2173612 backedges. 275284 proven. 31752 refuted. 0 times theorem prover too weak. 1866576 trivial. 0 not checked. [2024-11-27 23:43:00,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:44:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2173612 backedges. 2844 proven. 34272 refuted. 0 times theorem prover too weak. 2136496 trivial. 0 not checked. [2024-11-27 23:44:47,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211969698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:44:47,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:44:47,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 22, 22] total 61 [2024-11-27 23:44:47,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136284806] [2024-11-27 23:44:47,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:44:47,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-27 23:44:47,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:44:47,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-27 23:44:47,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=506, Invalid=3154, Unknown=0, NotChecked=0, Total=3660 [2024-11-27 23:44:47,339 INFO L87 Difference]: Start difference. First operand 6052 states and 9865 transitions. Second operand has 61 states, 41 states have (on average 151.4390243902439) internal successors, (6209), 44 states have internal predecessors, (6209), 57 states have call successors, (3028), 2 states have call predecessors, (3028), 3 states have return successors, (3030), 54 states have call predecessors, (3030), 57 states have call successors, (3030)