./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/hard-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/hard-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC --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 98c9c42af626702ddf5387966d0ee6d8ed18622c4592b3b15adb184fa40ea1b1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:36:14,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:36:14,120 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:36:14,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:36:14,131 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:36:14,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:36:14,180 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:36:14,180 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:36:14,181 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:36:14,181 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:36:14,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:36:14,183 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:36:14,183 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:36:14,183 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:36:14,183 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:36:14,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:36:14,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:36:14,184 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:36:14,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:36:14,184 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:36:14,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:36:14,184 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:36:14,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:36:14,184 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:36:14,185 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:36:14,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:36:14,185 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:36:14,185 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:36:14,185 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:36:14,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:36:14,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:36:14,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:36:14,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:36:14,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:36:14,187 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:36:14,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:36:14,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:36:14,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:36:14,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:36:14,188 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:36:14,188 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:36:14,188 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:36:14,189 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:36:14,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:36:14,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:36:14,189 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:36:14,190 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:36:14,190 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:36:14,190 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_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC 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 -> 98c9c42af626702ddf5387966d0ee6d8ed18622c4592b3b15adb184fa40ea1b1 [2024-11-23 18:36:14,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:36:14,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:36:14,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:36:14,573 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:36:14,573 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:36:14,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/nla-digbench/hard-u.c [2024-11-23 18:36:18,196 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/data/71c4d26f0/c6ef27b4a7ba4137b0590fb8e494ae6b/FLAG5b7629e36 [2024-11-23 18:36:18,430 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:36:18,431 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/sv-benchmarks/c/nla-digbench/hard-u.c [2024-11-23 18:36:18,439 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/data/71c4d26f0/c6ef27b4a7ba4137b0590fb8e494ae6b/FLAG5b7629e36 [2024-11-23 18:36:18,457 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/data/71c4d26f0/c6ef27b4a7ba4137b0590fb8e494ae6b [2024-11-23 18:36:18,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:36:18,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:36:18,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:36:18,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:36:18,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:36:18,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15468bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18, skipping insertion in model container [2024-11-23 18:36:18,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,490 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:36:18,688 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_9c63d649-a0c1-4796-a507-8510c7c25a44/sv-benchmarks/c/nla-digbench/hard-u.c[537,550] [2024-11-23 18:36:18,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:36:18,721 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:36:18,734 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_9c63d649-a0c1-4796-a507-8510c7c25a44/sv-benchmarks/c/nla-digbench/hard-u.c[537,550] [2024-11-23 18:36:18,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:36:18,759 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:36:18,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18 WrapperNode [2024-11-23 18:36:18,760 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:36:18,761 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:36:18,761 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:36:18,761 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:36:18,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,785 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,811 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-23 18:36:18,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:36:18,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:36:18,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:36:18,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:36:18,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,826 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,845 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]. [2024-11-23 18:36:18,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,846 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,851 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,860 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,865 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,867 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:36:18,868 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:36:18,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:36:18,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:36:18,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18" (1/1) ... [2024-11-23 18:36:18,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:36:18,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:36:18,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:36:18,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:36:18,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:36:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:36:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:36:18,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:36:18,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 18:36:18,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 18:36:19,013 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:36:19,014 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:36:19,202 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-23 18:36:19,202 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:36:19,214 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:36:19,214 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 18:36:19,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:36:19 BoogieIcfgContainer [2024-11-23 18:36:19,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:36:19,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:36:19,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:36:19,225 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:36:19,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:36:18" (1/3) ... [2024-11-23 18:36:19,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f518b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:36:19, skipping insertion in model container [2024-11-23 18:36:19,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:36:18" (2/3) ... [2024-11-23 18:36:19,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f518b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:36:19, skipping insertion in model container [2024-11-23 18:36:19,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:36:19" (3/3) ... [2024-11-23 18:36:19,229 INFO L128 eAbstractionObserver]: Analyzing ICFG hard-u.c [2024-11-23 18:36:19,249 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:36:19,251 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hard-u.c that has 2 procedures, 24 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-23 18:36:19,334 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:36:19,355 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;@3477298b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:36:19,355 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:36:19,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.5) internal successors, (24), 15 states have internal predecessors, (24), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-23 18:36:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-23 18:36:19,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:19,371 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:19,372 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:19,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:19,378 INFO L85 PathProgramCache]: Analyzing trace with hash 121123614, now seen corresponding path program 1 times [2024-11-23 18:36:19,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:19,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371406921] [2024-11-23 18:36:19,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:19,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:36:19,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:19,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371406921] [2024-11-23 18:36:19,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371406921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:19,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:36:19,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 18:36:19,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579055267] [2024-11-23 18:36:19,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:19,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:36:19,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:19,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:36:19,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:36:19,591 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.5) internal successors, (24), 15 states have internal predecessors, (24), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:36:19,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:19,623 INFO L93 Difference]: Finished difference Result 45 states and 79 transitions. [2024-11-23 18:36:19,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:36:19,626 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-23 18:36:19,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:19,635 INFO L225 Difference]: With dead ends: 45 [2024-11-23 18:36:19,635 INFO L226 Difference]: Without dead ends: 20 [2024-11-23 18:36:19,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:36:19,645 INFO L435 NwaCegarLoop]: 32 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, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:19,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:36:19,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-23 18:36:19,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-23 18:36:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-23 18:36:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2024-11-23 18:36:19,705 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 8 [2024-11-23 18:36:19,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:19,708 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2024-11-23 18:36:19,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:36:19,708 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2024-11-23 18:36:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-23 18:36:19,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:19,710 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:19,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 18:36:19,710 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:19,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:19,711 INFO L85 PathProgramCache]: Analyzing trace with hash 178381916, now seen corresponding path program 1 times [2024-11-23 18:36:19,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:19,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530202381] [2024-11-23 18:36:19,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:19,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:36:19,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:20,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530202381] [2024-11-23 18:36:20,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530202381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:20,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:36:20,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:36:20,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995625013] [2024-11-23 18:36:20,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:20,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:36:20,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:20,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:36:20,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:36:20,007 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:36:20,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:20,101 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2024-11-23 18:36:20,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:36:20,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-23 18:36:20,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:20,103 INFO L225 Difference]: With dead ends: 32 [2024-11-23 18:36:20,104 INFO L226 Difference]: Without dead ends: 30 [2024-11-23 18:36:20,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:36:20,105 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:20,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 83 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:36:20,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-23 18:36:20,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2024-11-23 18:36:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-23 18:36:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2024-11-23 18:36:20,117 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2024-11-23 18:36:20,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:20,118 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2024-11-23 18:36:20,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 18:36:20,118 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2024-11-23 18:36:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-23 18:36:20,119 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:20,119 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:20,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:36:20,120 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:20,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:20,120 INFO L85 PathProgramCache]: Analyzing trace with hash 887975295, now seen corresponding path program 1 times [2024-11-23 18:36:20,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:20,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777418250] [2024-11-23 18:36:20,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:20,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:20,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 18:36:20,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:20,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777418250] [2024-11-23 18:36:20,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777418250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:20,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:36:20,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:36:20,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556079835] [2024-11-23 18:36:20,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:20,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:36:20,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:20,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:36:20,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:36:20,522 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 18:36:20,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:20,637 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2024-11-23 18:36:20,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:36:20,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-23 18:36:20,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:20,640 INFO L225 Difference]: With dead ends: 36 [2024-11-23 18:36:20,640 INFO L226 Difference]: Without dead ends: 34 [2024-11-23 18:36:20,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:36:20,641 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:20,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 80 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:36:20,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-23 18:36:20,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2024-11-23 18:36:20,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-23 18:36:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-23 18:36:20,655 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 13 [2024-11-23 18:36:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:20,655 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-23 18:36:20,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 18:36:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-23 18:36:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-23 18:36:20,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:20,657 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:20,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:36:20,657 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:20,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash -985253380, now seen corresponding path program 1 times [2024-11-23 18:36:20,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:20,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214815802] [2024-11-23 18:36:20,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:20,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 18:36:20,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837002889] [2024-11-23 18:36:20,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:20,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:36:20,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:36:20,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:36:20,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:36:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:20,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 18:36:20,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:36:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 18:36:21,162 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:36:21,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:21,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214815802] [2024-11-23 18:36:21,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 18:36:21,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837002889] [2024-11-23 18:36:21,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837002889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:21,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:36:21,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:36:21,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597621519] [2024-11-23 18:36:21,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:21,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:36:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:21,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:36:21,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:36:21,166 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:36:21,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:21,420 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2024-11-23 18:36:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:36:21,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2024-11-23 18:36:21,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:21,423 INFO L225 Difference]: With dead ends: 51 [2024-11-23 18:36:21,423 INFO L226 Difference]: Without dead ends: 39 [2024-11-23 18:36:21,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:36:21,425 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:21,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 99 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 18:36:21,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-23 18:36:21,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-23 18:36:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-23 18:36:21,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2024-11-23 18:36:21,448 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 18 [2024-11-23 18:36:21,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:21,448 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2024-11-23 18:36:21,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-23 18:36:21,449 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2024-11-23 18:36:21,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-23 18:36:21,449 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:21,449 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:21,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 18:36:21,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:36:21,656 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:21,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash 506235226, now seen corresponding path program 1 times [2024-11-23 18:36:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:21,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481242727] [2024-11-23 18:36:21,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:21,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 18:36:21,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604845688] [2024-11-23 18:36:21,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:21,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:36:21,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:36:21,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:36:21,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:36:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:21,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-23 18:36:21,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:36:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 18:36:22,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:36:22,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:22,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481242727] [2024-11-23 18:36:22,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 18:36:22,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604845688] [2024-11-23 18:36:22,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604845688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:36:22,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:36:22,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-23 18:36:22,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698795202] [2024-11-23 18:36:22,905 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-23 18:36:22,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 18:36:22,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:22,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 18:36:22,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-23 18:36:22,907 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 10 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 18:36:23,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:23,395 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2024-11-23 18:36:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 18:36:23,397 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-11-23 18:36:23,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:23,398 INFO L225 Difference]: With dead ends: 55 [2024-11-23 18:36:23,400 INFO L226 Difference]: Without dead ends: 44 [2024-11-23 18:36:23,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-23 18:36:23,403 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:23,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 88 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 18:36:23,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-23 18:36:23,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-23 18:36:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-23 18:36:23,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2024-11-23 18:36:23,427 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 24 [2024-11-23 18:36:23,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:23,431 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2024-11-23 18:36:23,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 18:36:23,431 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2024-11-23 18:36:23,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-23 18:36:23,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:23,432 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:23,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 18:36:23,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:36:23,636 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:23,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:23,637 INFO L85 PathProgramCache]: Analyzing trace with hash 440489026, now seen corresponding path program 1 times [2024-11-23 18:36:23,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:23,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562492361] [2024-11-23 18:36:23,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:23,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 18:36:23,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432973102] [2024-11-23 18:36:23,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:23,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:36:23,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:36:23,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:36:23,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:36:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:23,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 18:36:23,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:36:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-23 18:36:23,965 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:36:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-23 18:36:24,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:24,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562492361] [2024-11-23 18:36:24,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 18:36:24,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432973102] [2024-11-23 18:36:24,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432973102] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:36:24,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:36:24,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-23 18:36:24,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130858933] [2024-11-23 18:36:24,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:24,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:36:24,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:24,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:36:24,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:36:24,222 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-23 18:36:28,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:36:32,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:36:33,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:36:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:33,992 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-11-23 18:36:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:36:33,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2024-11-23 18:36:33,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:33,994 INFO L225 Difference]: With dead ends: 53 [2024-11-23 18:36:33,994 INFO L226 Difference]: Without dead ends: 51 [2024-11-23 18:36:33,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:36:33,996 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 5 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:33,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 75 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2024-11-23 18:36:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-23 18:36:34,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2024-11-23 18:36:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 32 states have internal predecessors, (34), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-23 18:36:34,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-11-23 18:36:34,011 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 34 [2024-11-23 18:36:34,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:34,011 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-11-23 18:36:34,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-23 18:36:34,012 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-11-23 18:36:34,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-23 18:36:34,013 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:34,013 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:34,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 18:36:34,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 18:36:34,214 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:34,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:34,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1675646752, now seen corresponding path program 1 times [2024-11-23 18:36:34,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:34,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910627198] [2024-11-23 18:36:34,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:34,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 18:36:34,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936392927] [2024-11-23 18:36:34,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:34,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:36:34,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:36:34,256 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:36:34,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:36:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:34,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 18:36:34,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:36:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-23 18:36:34,441 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:36:34,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:36:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910627198] [2024-11-23 18:36:34,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 18:36:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936392927] [2024-11-23 18:36:34,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936392927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:36:34,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:36:34,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:36:34,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065746618] [2024-11-23 18:36:34,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:36:34,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:36:34,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:36:34,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:36:34,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:36:34,443 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 18:36:34,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:36:34,558 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2024-11-23 18:36:34,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:36:34,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-11-23 18:36:34,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:36:34,561 INFO L225 Difference]: With dead ends: 62 [2024-11-23 18:36:34,561 INFO L226 Difference]: Without dead ends: 60 [2024-11-23 18:36:34,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:36:34,562 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:36:34,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 64 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:36:34,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-23 18:36:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2024-11-23 18:36:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 38 states have internal predecessors, (41), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-23 18:36:34,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2024-11-23 18:36:34,592 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 40 [2024-11-23 18:36:34,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:36:34,594 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2024-11-23 18:36:34,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 18:36:34,595 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2024-11-23 18:36:34,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-23 18:36:34,596 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:36:34,596 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:36:34,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 18:36:34,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-23 18:36:34,797 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:36:34,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:36:34,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1586990777, now seen corresponding path program 1 times [2024-11-23 18:36:34,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:36:34,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252553555] [2024-11-23 18:36:34,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:34,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:36:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 18:36:34,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668530312] [2024-11-23 18:36:34,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:36:34,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:36:34,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:36:34,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:36:34,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c63d649-a0c1-4796-a507-8510c7c25a44/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 18:36:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:36:38,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-23 18:36:38,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:36:39,859 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 31 proven. 35 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-23 18:36:39,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:38:23,027 WARN L286 SmtUtils]: Spent 14.19s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:38:36,710 WARN L286 SmtUtils]: Spent 7.87s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:38:45,828 WARN L286 SmtUtils]: Spent 9.12s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:39:46,589 WARN L286 SmtUtils]: Spent 19.20s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:40:06,094 WARN L286 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:40:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 31 proven. 34 refuted. 1 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-23 18:40:38,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:38,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252553555] [2024-11-23 18:40:38,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 18:40:38,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668530312] [2024-11-23 18:40:38,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668530312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:40:38,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 18:40:38,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 22 [2024-11-23 18:40:38,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453500402] [2024-11-23 18:40:38,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 18:40:38,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 18:40:38,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:38,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 18:40:38,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=359, Unknown=24, NotChecked=0, Total=462 [2024-11-23 18:40:38,271 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 22 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 10 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2024-11-23 18:40:42,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:40:46,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:40:50,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:40:54,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:40:58,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:41:00,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:41:04,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:41:08,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:41:20,715 WARN L286 SmtUtils]: Spent 12.34s on a formula simplification. DAG size of input: 45 DAG size of output: 32 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:41:21,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:41:27,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:41:31,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:41:36,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:41:40,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:41:44,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:42:01,181 WARN L286 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 41 DAG size of output: 31 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:42:05,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:42:09,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:43:05,680 WARN L286 SmtUtils]: Spent 51.01s on a formula simplification. DAG size of input: 59 DAG size of output: 41 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:43:07,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:43:21,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:43:25,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:43:29,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:43:30,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:44:26,082 WARN L286 SmtUtils]: Spent 28.30s on a formula simplification. DAG size of input: 51 DAG size of output: 50 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:44:30,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:44:34,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:44:38,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:45:52,749 WARN L286 SmtUtils]: Spent 55.31s on a formula simplification. DAG size of input: 58 DAG size of output: 57 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:45:54,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:45:56,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:46:00,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:46:04,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:46:09,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:46:13,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:46:18,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:46:22,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:46:32,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:46:36,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:46:51,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:46:55,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:47:00,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:47:04,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:47:08,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:47:12,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:47:38,482 WARN L286 SmtUtils]: Spent 19.25s on a formula simplification. DAG size of input: 40 DAG size of output: 39 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:48:18,452 WARN L286 SmtUtils]: Spent 33.49s on a formula simplification. DAG size of input: 47 DAG size of output: 46 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:48:23,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:48:28,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:48:32,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:48:36,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:48:40,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:48:44,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:48:46,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:48:50,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:48:54,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:49:12,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:49:14,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:49:37,585 WARN L286 SmtUtils]: Spent 9.84s on a formula simplification. DAG size of input: 40 DAG size of output: 39 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:49:41,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:49:46,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:49:50,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:49:55,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:49:59,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:50:03,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:50:37,653 WARN L286 SmtUtils]: Spent 21.12s on a formula simplification. DAG size of input: 45 DAG size of output: 41 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:50:41,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:50:45,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:50:49,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:51:12,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:51:17,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []