./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array20_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array20_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:26:58,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:26:58,863 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:26:58,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:26:58,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:26:58,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:26:58,909 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:26:58,910 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:26:58,910 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:26:58,910 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:26:58,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:26:58,912 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:26:58,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:26:58,913 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:26:58,914 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:26:58,914 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:26:58,914 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:26:58,914 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:26:58,914 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:26:58,914 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:26:58,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:26:58,914 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:26:58,914 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:26:58,915 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:26:58,915 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:26:58,915 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:26:58,915 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:26:58,915 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:26:58,916 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:26:58,916 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:26:58,916 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:26:58,916 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:26:58,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:26:58,916 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:26:58,916 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:26:58,916 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:26:58,916 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:26:58,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:26:58,916 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:26:58,917 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:26:58,917 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:26:58,917 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:26:58,917 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:26:58,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:26:58,917 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:26:58,917 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:26:58,917 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:26:58,917 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:26:58,917 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_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 [2024-11-27 20:26:59,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:26:59,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:26:59,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:26:59,264 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:26:59,265 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:26:59,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-patterns/array20_pattern.c [2024-11-27 20:27:02,268 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/data/4944d35b3/562242e42a4b4ca9b5b254bb01079294/FLAG41ef025c5 [2024-11-27 20:27:02,528 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:27:02,529 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/sv-benchmarks/c/array-patterns/array20_pattern.c [2024-11-27 20:27:02,540 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/data/4944d35b3/562242e42a4b4ca9b5b254bb01079294/FLAG41ef025c5 [2024-11-27 20:27:02,822 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/data/4944d35b3/562242e42a4b4ca9b5b254bb01079294 [2024-11-27 20:27:02,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:27:02,826 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:27:02,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:27:02,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:27:02,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:27:02,832 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:27:02" (1/1) ... [2024-11-27 20:27:02,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4507c7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:02, skipping insertion in model container [2024-11-27 20:27:02,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:27:02" (1/1) ... [2024-11-27 20:27:02,849 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:27:03,013 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_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2024-11-27 20:27:03,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:27:03,055 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:27:03,066 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_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2024-11-27 20:27:03,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:27:03,110 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:27:03,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03 WrapperNode [2024-11-27 20:27:03,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:27:03,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:27:03,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:27:03,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:27:03,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03" (1/1) ... [2024-11-27 20:27:03,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03" (1/1) ... [2024-11-27 20:27:03,156 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2024-11-27 20:27:03,156 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:27:03,157 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:27:03,157 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:27:03,157 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:27:03,166 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03" (1/1) ... [2024-11-27 20:27:03,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03" (1/1) ... [2024-11-27 20:27:03,168 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03" (1/1) ... [2024-11-27 20:27:03,182 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-27 20:27:03,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03" (1/1) ... [2024-11-27 20:27:03,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03" (1/1) ... [2024-11-27 20:27:03,187 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03" (1/1) ... [2024-11-27 20:27:03,188 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03" (1/1) ... [2024-11-27 20:27:03,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03" (1/1) ... [2024-11-27 20:27:03,193 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03" (1/1) ... [2024-11-27 20:27:03,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03" (1/1) ... [2024-11-27 20:27:03,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:27:03,196 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:27:03,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:27:03,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:27:03,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03" (1/1) ... [2024-11-27 20:27:03,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:27:03,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:27:03,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:27:03,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:27:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:27:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:27:03,265 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:27:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:27:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:27:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:27:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:27:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:27:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:27:03,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:27:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:27:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:27:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:27:03,359 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:27:03,361 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:27:03,657 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-27 20:27:03,657 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:27:03,676 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:27:03,676 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-27 20:27:03,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:27:03 BoogieIcfgContainer [2024-11-27 20:27:03,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:27:03,680 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:27:03,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:27:03,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:27:03,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:27:02" (1/3) ... [2024-11-27 20:27:03,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b02c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:27:03, skipping insertion in model container [2024-11-27 20:27:03,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:27:03" (2/3) ... [2024-11-27 20:27:03,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b02c2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:27:03, skipping insertion in model container [2024-11-27 20:27:03,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:27:03" (3/3) ... [2024-11-27 20:27:03,689 INFO L128 eAbstractionObserver]: Analyzing ICFG array20_pattern.c [2024-11-27 20:27:03,707 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:27:03,708 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array20_pattern.c that has 2 procedures, 35 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-27 20:27:03,774 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:27:03,788 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;@25651a81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:27:03,789 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:27:03,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 30 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:27:03,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-27 20:27:03,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:03,803 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:03,804 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:03,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:03,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1020821997, now seen corresponding path program 1 times [2024-11-27 20:27:03,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:03,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176911148] [2024-11-27 20:27:03,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:03,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:03,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:03,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176911148] [2024-11-27 20:27:03,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176911148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:27:03,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:27:03,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:27:03,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190031172] [2024-11-27 20:27:03,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:27:03,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:27:03,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:03,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:27:03,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:27:03,992 INFO L87 Difference]: Start difference. First operand has 35 states, 29 states have (on average 1.5517241379310345) internal successors, (45), 30 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 20:27:04,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:04,008 INFO L93 Difference]: Finished difference Result 67 states and 101 transitions. [2024-11-27 20:27:04,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:27:04,010 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-27 20:27:04,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:04,014 INFO L225 Difference]: With dead ends: 67 [2024-11-27 20:27:04,015 INFO L226 Difference]: Without dead ends: 31 [2024-11-27 20:27:04,018 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 [2024-11-27 20:27:04,021 INFO L435 NwaCegarLoop]: 43 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, 43 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 [2024-11-27 20:27:04,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:27:04,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-27 20:27:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-27 20:27:04,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:27:04,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2024-11-27 20:27:04,056 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 15 [2024-11-27 20:27:04,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:04,057 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2024-11-27 20:27:04,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 20:27:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2024-11-27 20:27:04,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-27 20:27:04,058 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:04,059 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:04,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:27:04,059 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:04,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:04,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1618540529, now seen corresponding path program 1 times [2024-11-27 20:27:04,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:04,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854345152] [2024-11-27 20:27:04,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:04,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:04,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 20:27:04,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:04,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854345152] [2024-11-27 20:27:04,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854345152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:27:04,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:27:04,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:27:04,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352071546] [2024-11-27 20:27:04,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:27:04,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:27:04,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:04,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:27:04,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:27:04,602 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:27:04,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:04,640 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2024-11-27 20:27:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:27:04,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-27 20:27:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:04,642 INFO L225 Difference]: With dead ends: 40 [2024-11-27 20:27:04,642 INFO L226 Difference]: Without dead ends: 36 [2024-11-27 20:27:04,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:27:04,643 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 14 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:04,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 89 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:27:04,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-27 20:27:04,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2024-11-27 20:27:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:27:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2024-11-27 20:27:04,659 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 30 [2024-11-27 20:27:04,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:04,661 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2024-11-27 20:27:04,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:27:04,662 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2024-11-27 20:27:04,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-27 20:27:04,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:04,664 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:04,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:27:04,665 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:04,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:04,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1945910593, now seen corresponding path program 1 times [2024-11-27 20:27:04,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:04,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904098015] [2024-11-27 20:27:04,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:04,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 20:27:04,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:04,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904098015] [2024-11-27 20:27:04,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904098015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:27:04,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:27:04,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:27:04,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088190819] [2024-11-27 20:27:04,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:27:04,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:27:04,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:04,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:27:04,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:27:04,906 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:27:05,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:05,069 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2024-11-27 20:27:05,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:27:05,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2024-11-27 20:27:05,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:05,073 INFO L225 Difference]: With dead ends: 74 [2024-11-27 20:27:05,075 INFO L226 Difference]: Without dead ends: 47 [2024-11-27 20:27:05,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:27:05,077 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 18 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:05,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 65 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:27:05,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-27 20:27:05,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2024-11-27 20:27:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:27:05,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2024-11-27 20:27:05,092 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 36 [2024-11-27 20:27:05,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:05,092 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-11-27 20:27:05,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:27:05,092 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2024-11-27 20:27:05,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-27 20:27:05,093 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:05,093 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:05,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:27:05,094 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:05,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:05,094 INFO L85 PathProgramCache]: Analyzing trace with hash -108446775, now seen corresponding path program 1 times [2024-11-27 20:27:05,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:05,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114828616] [2024-11-27 20:27:05,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:05,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 20:27:05,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:05,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114828616] [2024-11-27 20:27:05,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114828616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:27:05,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:27:05,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:27:05,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450538330] [2024-11-27 20:27:05,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:27:05,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:27:05,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:05,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:27:05,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:27:05,330 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:27:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:05,473 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2024-11-27 20:27:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:27:05,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2024-11-27 20:27:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:05,475 INFO L225 Difference]: With dead ends: 76 [2024-11-27 20:27:05,475 INFO L226 Difference]: Without dead ends: 45 [2024-11-27 20:27:05,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:27:05,476 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:05,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 83 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:27:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-27 20:27:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2024-11-27 20:27:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 20:27:05,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2024-11-27 20:27:05,484 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 40 [2024-11-27 20:27:05,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:05,484 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2024-11-27 20:27:05,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:27:05,485 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2024-11-27 20:27:05,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-27 20:27:05,485 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:05,486 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:05,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:27:05,486 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:05,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:05,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1188491981, now seen corresponding path program 1 times [2024-11-27 20:27:05,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:05,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107842678] [2024-11-27 20:27:05,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:05,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:27:05,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996962144] [2024-11-27 20:27:05,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:05,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:27:05,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:27:05,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:27:05,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:27:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:05,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-27 20:27:05,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:06,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:27:06,716 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2024-11-27 20:27:06,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 18 [2024-11-27 20:27:06,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:27:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:27:07,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:27:41,733 WARN L286 SmtUtils]: Spent 9.09s on a formula simplification that was a NOOP. DAG size: 139 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 20:28:34,025 WARN L286 SmtUtils]: Spent 18.81s on a formula simplification. DAG size of input: 254 DAG size of output: 252 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 20:28:34,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:34,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107842678] [2024-11-27 20:28:34,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:28:34,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996962144] [2024-11-27 20:28:34,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996962144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:28:34,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:28:34,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2024-11-27 20:28:34,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263884121] [2024-11-27 20:28:34,042 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:34,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-27 20:28:34,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:34,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-27 20:28:34,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=841, Unknown=3, NotChecked=0, Total=992 [2024-11-27 20:28:34,044 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 20 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:28:38,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:28:38,625 INFO L93 Difference]: Finished difference Result 108 states and 133 transitions. [2024-11-27 20:28:38,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 20:28:38,626 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 20 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2024-11-27 20:28:38,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:28:38,627 INFO L225 Difference]: With dead ends: 108 [2024-11-27 20:28:38,627 INFO L226 Difference]: Without dead ends: 81 [2024-11-27 20:28:38,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 59.0s TimeCoverageRelationStatistics Valid=207, Invalid=1272, Unknown=3, NotChecked=0, Total=1482 [2024-11-27 20:28:38,629 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 71 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:28:38,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 242 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:28:38,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-27 20:28:38,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2024-11-27 20:28:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-27 20:28:38,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2024-11-27 20:28:38,641 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 42 [2024-11-27 20:28:38,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:28:38,642 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2024-11-27 20:28:38,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 20 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:28:38,642 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2024-11-27 20:28:38,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-27 20:28:38,643 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:38,643 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:38,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:28:38,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:38,844 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:38,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:38,845 INFO L85 PathProgramCache]: Analyzing trace with hash 167423627, now seen corresponding path program 1 times [2024-11-27 20:28:38,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:38,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778536735] [2024-11-27 20:28:38,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:38,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 20:28:38,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:38,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778536735] [2024-11-27 20:28:38,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778536735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:38,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:38,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:28:38,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97784462] [2024-11-27 20:28:38,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:38,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:28:38,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:38,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:28:38,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:28:38,920 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 20:28:38,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:28:38,984 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2024-11-27 20:28:38,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:28:38,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2024-11-27 20:28:38,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:28:38,986 INFO L225 Difference]: With dead ends: 97 [2024-11-27 20:28:38,986 INFO L226 Difference]: Without dead ends: 72 [2024-11-27 20:28:38,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:28:38,987 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:28:38,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:28:38,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-27 20:28:39,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2024-11-27 20:28:39,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 62 states have internal predecessors, (75), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-27 20:28:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2024-11-27 20:28:39,010 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 42 [2024-11-27 20:28:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:28:39,010 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2024-11-27 20:28:39,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 20:28:39,010 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2024-11-27 20:28:39,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-27 20:28:39,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:39,012 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:39,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:28:39,012 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:39,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:39,013 INFO L85 PathProgramCache]: Analyzing trace with hash -843693623, now seen corresponding path program 1 times [2024-11-27 20:28:39,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:39,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626538338] [2024-11-27 20:28:39,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:39,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:39,496 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 20:28:39,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:39,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626538338] [2024-11-27 20:28:39,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626538338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:28:39,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412746536] [2024-11-27 20:28:39,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:39,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:39,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:39,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:39,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:28:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:39,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 20:28:39,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:28:39,791 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:28:40,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412746536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:40,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:28:40,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 23 [2024-11-27 20:28:40,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934890030] [2024-11-27 20:28:40,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:40,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-27 20:28:40,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:40,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-27 20:28:40,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2024-11-27 20:28:40,134 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 23 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 6 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-27 20:28:41,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:28:41,195 INFO L93 Difference]: Finished difference Result 290 states and 365 transitions. [2024-11-27 20:28:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-27 20:28:41,196 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 6 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 42 [2024-11-27 20:28:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:28:41,199 INFO L225 Difference]: With dead ends: 290 [2024-11-27 20:28:41,199 INFO L226 Difference]: Without dead ends: 232 [2024-11-27 20:28:41,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=1142, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 20:28:41,201 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 230 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:28:41,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 418 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:28:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-27 20:28:41,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 126. [2024-11-27 20:28:41,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 110 states have (on average 1.2363636363636363) internal successors, (136), 112 states have internal predecessors, (136), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 20:28:41,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 154 transitions. [2024-11-27 20:28:41,235 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 154 transitions. Word has length 42 [2024-11-27 20:28:41,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:28:41,236 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 154 transitions. [2024-11-27 20:28:41,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 6 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-27 20:28:41,236 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 154 transitions. [2024-11-27 20:28:41,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-27 20:28:41,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:41,237 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:41,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:28:41,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:41,438 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:41,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:41,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2006120657, now seen corresponding path program 2 times [2024-11-27 20:28:41,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:41,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697715854] [2024-11-27 20:28:41,441 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:28:41,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:41,490 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:28:41,493 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 20:28:41,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:41,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697715854] [2024-11-27 20:28:41,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697715854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:28:41,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805458546] [2024-11-27 20:28:41,641 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:28:41,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:41,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:41,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:41,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:28:41,756 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:28:41,756 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:41,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:28:41,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:28:41,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:41,942 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 20:28:41,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805458546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:41,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:28:41,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-27 20:28:41,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492942978] [2024-11-27 20:28:41,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:41,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:28:41,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:41,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:28:41,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:28:41,944 INFO L87 Difference]: Start difference. First operand 126 states and 154 transitions. Second operand has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:28:42,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:28:42,242 INFO L93 Difference]: Finished difference Result 209 states and 262 transitions. [2024-11-27 20:28:42,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:28:42,243 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2024-11-27 20:28:42,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:28:42,244 INFO L225 Difference]: With dead ends: 209 [2024-11-27 20:28:42,244 INFO L226 Difference]: Without dead ends: 169 [2024-11-27 20:28:42,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:28:42,246 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 43 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:28:42,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 175 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:28:42,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-27 20:28:42,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 141. [2024-11-27 20:28:42,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 125 states have (on average 1.24) internal successors, (155), 127 states have internal predecessors, (155), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 20:28:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 173 transitions. [2024-11-27 20:28:42,282 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 173 transitions. Word has length 44 [2024-11-27 20:28:42,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:28:42,282 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 173 transitions. [2024-11-27 20:28:42,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.466666666666667) internal successors, (52), 15 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:28:42,283 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 173 transitions. [2024-11-27 20:28:42,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-27 20:28:42,288 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:42,288 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:42,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:28:42,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 20:28:42,489 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:42,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:42,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2139822299, now seen corresponding path program 3 times [2024-11-27 20:28:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:42,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676532359] [2024-11-27 20:28:42,489 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:28:42,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:42,521 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-27 20:28:42,522 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 20:28:42,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:42,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676532359] [2024-11-27 20:28:42,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676532359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:42,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:42,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:28:42,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195947111] [2024-11-27 20:28:42,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:42,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:28:42,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:42,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:28:42,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:28:42,632 INFO L87 Difference]: Start difference. First operand 141 states and 173 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:28:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:28:42,774 INFO L93 Difference]: Finished difference Result 233 states and 281 transitions. [2024-11-27 20:28:42,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:28:42,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 48 [2024-11-27 20:28:42,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:28:42,776 INFO L225 Difference]: With dead ends: 233 [2024-11-27 20:28:42,776 INFO L226 Difference]: Without dead ends: 153 [2024-11-27 20:28:42,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:28:42,777 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 15 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:28:42,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 159 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:28:42,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-27 20:28:42,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 141. [2024-11-27 20:28:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 125 states have (on average 1.224) internal successors, (153), 127 states have internal predecessors, (153), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 20:28:42,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 171 transitions. [2024-11-27 20:28:42,799 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 171 transitions. Word has length 48 [2024-11-27 20:28:42,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:28:42,799 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 171 transitions. [2024-11-27 20:28:42,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 20:28:42,799 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 171 transitions. [2024-11-27 20:28:42,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-27 20:28:42,800 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:42,801 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:42,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:28:42,801 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:42,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:42,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1000789861, now seen corresponding path program 4 times [2024-11-27 20:28:42,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:42,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293179743] [2024-11-27 20:28:42,802 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:28:42,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:42,814 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:28:42,814 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 20:28:42,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:42,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293179743] [2024-11-27 20:28:42,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293179743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:28:42,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747873476] [2024-11-27 20:28:42,900 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:28:42,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:42,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:42,902 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:42,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:28:42,967 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:28:42,967 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:42,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:28:42,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:28:43,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 20:28:43,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747873476] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:43,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:28:43,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-27 20:28:43,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39401560] [2024-11-27 20:28:43,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:43,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:28:43,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:43,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:28:43,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:28:43,148 INFO L87 Difference]: Start difference. First operand 141 states and 171 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:28:43,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:28:43,456 INFO L93 Difference]: Finished difference Result 165 states and 196 transitions. [2024-11-27 20:28:43,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:28:43,457 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2024-11-27 20:28:43,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:28:43,458 INFO L225 Difference]: With dead ends: 165 [2024-11-27 20:28:43,458 INFO L226 Difference]: Without dead ends: 146 [2024-11-27 20:28:43,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 89 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:28:43,459 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:28:43,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 152 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:28:43,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-27 20:28:43,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 135. [2024-11-27 20:28:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 119 states have (on average 1.2100840336134453) internal successors, (144), 121 states have internal predecessors, (144), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 20:28:43,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 162 transitions. [2024-11-27 20:28:43,489 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 162 transitions. Word has length 48 [2024-11-27 20:28:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:28:43,490 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 162 transitions. [2024-11-27 20:28:43,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:28:43,490 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 162 transitions. [2024-11-27 20:28:43,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-27 20:28:43,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:43,491 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:43,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:28:43,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:28:43,692 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:43,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1406522207, now seen corresponding path program 5 times [2024-11-27 20:28:43,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:43,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711506446] [2024-11-27 20:28:43,693 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:28:43,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:43,712 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-27 20:28:43,713 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 20:28:43,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:43,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711506446] [2024-11-27 20:28:43,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711506446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:28:43,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217647867] [2024-11-27 20:28:43,774 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:28:43,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:43,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:43,777 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:43,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:28:43,839 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-27 20:28:43,839 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:28:43,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:28:43,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:28:43,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 20:28:43,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217647867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:43,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:28:43,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-11-27 20:28:43,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549733822] [2024-11-27 20:28:43,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:43,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:28:43,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:43,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:28:43,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:28:43,997 INFO L87 Difference]: Start difference. First operand 135 states and 162 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:28:44,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:28:44,219 INFO L93 Difference]: Finished difference Result 223 states and 259 transitions. [2024-11-27 20:28:44,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:28:44,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2024-11-27 20:28:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:28:44,220 INFO L225 Difference]: With dead ends: 223 [2024-11-27 20:28:44,220 INFO L226 Difference]: Without dead ends: 114 [2024-11-27 20:28:44,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 93 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:28:44,222 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 45 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:28:44,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 129 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:28:44,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-27 20:28:44,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 107. [2024-11-27 20:28:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 93 states have (on average 1.1290322580645162) internal successors, (105), 94 states have internal predecessors, (105), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-27 20:28:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2024-11-27 20:28:44,235 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 50 [2024-11-27 20:28:44,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:28:44,235 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2024-11-27 20:28:44,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:28:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2024-11-27 20:28:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-27 20:28:44,236 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:44,237 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:28:44,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:28:44,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 20:28:44,441 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:44,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:44,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1708116860, now seen corresponding path program 1 times [2024-11-27 20:28:44,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:44,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634765072] [2024-11-27 20:28:44,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:44,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:28:44,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391488339] [2024-11-27 20:28:44,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:44,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:44,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:44,526 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:44,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa08347f-549d-4523-8ca4-cdbd0dd9b65e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:28:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:44,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-27 20:28:44,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:45,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:28:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 20:28:45,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:45,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 165 [2024-11-27 20:28:45,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 20:28:45,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 165 treesize of output 730 [2024-11-27 20:28:46,953 INFO L349 Elim1Store]: treesize reduction 489, result has 19.2 percent of original size [2024-11-27 20:28:46,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 425 treesize of output 642 [2024-11-27 20:28:58,790 WARN L286 SmtUtils]: Spent 7.61s on a formula simplification. DAG size of input: 321 DAG size of output: 127 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-27 20:28:58,790 INFO L349 Elim1Store]: treesize reduction 1868, result has 23.9 percent of original size [2024-11-27 20:28:58,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 10 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 12 new quantified variables, introduced 48 case distinctions, treesize of input 3273 treesize of output 7248 [2024-11-27 20:33:11,168 INFO L349 Elim1Store]: treesize reduction 207, result has 0.5 percent of original size [2024-11-27 20:33:11,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 344 treesize of output 363 [2024-11-27 20:33:11,426 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:33:11,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:33:11,501 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:33:11,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:33:11,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 344 treesize of output 363 [2024-11-27 20:33:12,058 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:33:12,175 INFO L224 Elim1Store]: Index analysis took 117 ms [2024-11-27 20:33:12,199 INFO L349 Elim1Store]: treesize reduction 49, result has 2.0 percent of original size [2024-11-27 20:33:12,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 344 treesize of output 363 [2024-11-27 20:33:13,316 INFO L224 Elim1Store]: Index analysis took 638 ms [2024-11-27 20:33:13,350 INFO L349 Elim1Store]: treesize reduction 207, result has 0.5 percent of original size [2024-11-27 20:33:13,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 1831 treesize of output 1850 [2024-11-27 20:33:15,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:33:15,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:33:15,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 178 [2024-11-27 20:33:28,137 WARN L286 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:34:01,469 WARN L286 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:34:34,186 WARN L286 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:35:52,522 WARN L286 SmtUtils]: Spent 5.97s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:36:09,076 WARN L286 SmtUtils]: Spent 8.65s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:36:14,315 WARN L286 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:36:22,804 WARN L286 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:36:56,160 WARN L286 SmtUtils]: Spent 7.19s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:37:22,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:22,194 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2024-11-27 20:37:22,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 261 treesize of output 211 [2024-11-27 20:37:23,915 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:23,917 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:23,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:23,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 520 treesize of output 361 [2024-11-27 20:37:24,281 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:24,283 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:24,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 520 treesize of output 361 [2024-11-27 20:37:24,514 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:24,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:24,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:24,829 INFO L349 Elim1Store]: treesize reduction 235, result has 37.2 percent of original size [2024-11-27 20:37:24,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 710 treesize of output 699 [2024-11-27 20:37:28,012 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:28,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:28,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:28,104 INFO L349 Elim1Store]: treesize reduction 209, result has 0.5 percent of original size [2024-11-27 20:37:28,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 620 treesize of output 357 [2024-11-27 20:37:28,569 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:28,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:28,616 INFO L349 Elim1Store]: treesize reduction 523, result has 0.2 percent of original size [2024-11-27 20:37:28,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 728 treesize of output 1 [2024-11-27 20:37:28,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:28,806 INFO L224 Elim1Store]: Index analysis took 175 ms [2024-11-27 20:37:28,813 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2024-11-27 20:37:28,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 261 treesize of output 1 [2024-11-27 20:37:28,982 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:28,983 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:29,100 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:29,103 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:29,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:29,117 INFO L224 Elim1Store]: Index analysis took 135 ms [2024-11-27 20:37:29,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 520 treesize of output 361 [2024-11-27 20:37:29,809 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:29,811 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:29,815 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:29,817 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:29,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:29,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 520 treesize of output 361 [2024-11-27 20:37:30,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:30,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 73 [2024-11-27 20:37:30,931 INFO L349 Elim1Store]: treesize reduction 291, result has 32.3 percent of original size [2024-11-27 20:37:30,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 813 treesize of output 798 [2024-11-27 20:37:32,739 INFO L349 Elim1Store]: treesize reduction 265, result has 0.4 percent of original size [2024-11-27 20:37:32,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 633 treesize of output 366 [2024-11-27 20:37:36,908 INFO L349 Elim1Store]: treesize reduction 302, result has 53.6 percent of original size [2024-11-27 20:37:36,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 1082 treesize of output 2157 [2024-11-27 20:37:38,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:38,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:38,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:38,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:38,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:38,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 138 [2024-11-27 20:37:39,053 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:39,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:39,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:39,134 INFO L349 Elim1Store]: treesize reduction 49, result has 2.0 percent of original size [2024-11-27 20:37:39,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 636 treesize of output 791 [2024-11-27 20:37:40,397 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:40,400 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:40,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:40,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:40,775 INFO L224 Elim1Store]: Index analysis took 379 ms [2024-11-27 20:37:40,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 636 treesize of output 791 [2024-11-27 20:37:44,894 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:44,907 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:44,908 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:45,037 INFO L349 Elim1Store]: treesize reduction 141, result has 15.1 percent of original size [2024-11-27 20:37:45,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 655 treesize of output 861 [2024-11-27 20:37:46,008 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:46,646 INFO L349 Elim1Store]: treesize reduction 49, result has 2.0 percent of original size [2024-11-27 20:37:46,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 520 treesize of output 361 [2024-11-27 20:37:49,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:49,294 INFO L349 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2024-11-27 20:37:49,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 262 treesize of output 1 [2024-11-27 20:37:50,454 INFO L349 Elim1Store]: treesize reduction 577, result has 0.2 percent of original size [2024-11-27 20:37:50,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 818 treesize of output 1 [2024-11-27 20:37:50,887 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:50,889 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:50,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:51,033 INFO L224 Elim1Store]: Index analysis took 147 ms [2024-11-27 20:37:51,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 524 treesize of output 363 [2024-11-27 20:37:51,883 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:51,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:51,951 INFO L349 Elim1Store]: treesize reduction 49, result has 2.0 percent of original size [2024-11-27 20:37:51,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 524 treesize of output 363 [2024-11-27 20:37:54,614 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:54,615 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:54,631 INFO L349 Elim1Store]: treesize reduction 370, result has 0.3 percent of original size [2024-11-27 20:37:54,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 715 treesize of output 1 [2024-11-27 20:37:54,643 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-27 20:37:54,724 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:54,725 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 20:37:54,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-27 20:37:54,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 520 treesize of output 361 [2024-11-27 20:37:55,651 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-11-27 20:37:55,667 WARN L214 Elim1Store]: Array PQE input equivalent to true