./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s2lif.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s2lif.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b94168e93e7008f2fa8921a5a8a54bdf1fdce85df40220d4719fdc5076df164f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:10:24,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:10:24,156 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:10:24,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:10:24,167 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:10:24,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:10:24,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:10:24,214 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:10:24,214 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:10:24,214 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:10:24,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:10:24,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:10:24,216 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:10:24,216 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:10:24,217 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:10:24,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:10:24,217 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:10:24,218 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:10:24,218 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:10:24,218 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:10:24,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:10:24,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:10:24,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:10:24,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:10:24,218 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:10:24,219 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:10:24,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:10:24,219 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:10:24,219 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:10:24,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:10:24,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:10:24,220 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:10:24,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:10:24,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:10:24,220 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:10:24,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:10:24,221 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:10:24,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:10:24,221 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:10:24,221 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:10:24,221 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:10:24,221 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:10:24,221 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_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b94168e93e7008f2fa8921a5a8a54bdf1fdce85df40220d4719fdc5076df164f [2024-11-13 14:10:24,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:10:24,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:10:24,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:10:24,576 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:10:24,576 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:10:24,578 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-fpi/s2lif.c Unable to find full path for "g++" [2024-11-13 14:10:26,586 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:10:26,921 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:10:26,922 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/sv-benchmarks/c/array-fpi/s2lif.c [2024-11-13 14:10:26,934 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/data/801dbadcf/9ef8ea7ed4404c6b9ac88d4126c4ba74/FLAG35ab89807 [2024-11-13 14:10:27,183 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/data/801dbadcf/9ef8ea7ed4404c6b9ac88d4126c4ba74 [2024-11-13 14:10:27,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:10:27,187 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:10:27,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:10:27,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:10:27,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:10:27,195 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:10:27" (1/1) ... [2024-11-13 14:10:27,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2161f81f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27, skipping insertion in model container [2024-11-13 14:10:27,196 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:10:27" (1/1) ... [2024-11-13 14:10:27,213 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:10:27,394 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_61b561e9-dbc3-48fd-9d82-e49a9948130e/sv-benchmarks/c/array-fpi/s2lif.c[588,601] [2024-11-13 14:10:27,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:10:27,427 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:10:27,441 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_61b561e9-dbc3-48fd-9d82-e49a9948130e/sv-benchmarks/c/array-fpi/s2lif.c[588,601] [2024-11-13 14:10:27,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:10:27,471 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:10:27,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27 WrapperNode [2024-11-13 14:10:27,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:10:27,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:10:27,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:10:27,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:10:27,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27" (1/1) ... [2024-11-13 14:10:27,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27" (1/1) ... [2024-11-13 14:10:27,509 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2024-11-13 14:10:27,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:10:27,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:10:27,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:10:27,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:10:27,525 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27" (1/1) ... [2024-11-13 14:10:27,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27" (1/1) ... [2024-11-13 14:10:27,528 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27" (1/1) ... [2024-11-13 14:10:27,544 INFO L175 MemorySlicer]: Split 21 memory accesses to 4 slices as follows [2, 8, 7, 4]. 38 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 5 writes are split as follows [0, 0, 3, 2]. [2024-11-13 14:10:27,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27" (1/1) ... [2024-11-13 14:10:27,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27" (1/1) ... [2024-11-13 14:10:27,552 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27" (1/1) ... [2024-11-13 14:10:27,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27" (1/1) ... [2024-11-13 14:10:27,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27" (1/1) ... [2024-11-13 14:10:27,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27" (1/1) ... [2024-11-13 14:10:27,561 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:10:27,562 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:10:27,562 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:10:27,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:10:27,563 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27" (1/1) ... [2024-11-13 14:10:27,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:10:27,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:27,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:10:27,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:10:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:10:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:10:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:10:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:10:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 14:10:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:10:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:10:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:10:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 14:10:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 14:10:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:10:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:10:27,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:10:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:10:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:10:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 14:10:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 14:10:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:10:27,759 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:10:27,761 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:10:27,931 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-13 14:10:27,932 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:10:27,943 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:10:27,943 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 14:10:27,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:10:27 BoogieIcfgContainer [2024-11-13 14:10:27,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:10:27,947 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:10:27,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:10:27,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:10:27,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:10:27" (1/3) ... [2024-11-13 14:10:27,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2c4aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:10:27, skipping insertion in model container [2024-11-13 14:10:27,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:10:27" (2/3) ... [2024-11-13 14:10:27,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2c4aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:10:27, skipping insertion in model container [2024-11-13 14:10:27,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:10:27" (3/3) ... [2024-11-13 14:10:27,956 INFO L112 eAbstractionObserver]: Analyzing ICFG s2lif.c [2024-11-13 14:10:27,975 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:10:27,977 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG s2lif.c that has 1 procedures, 20 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-13 14:10:28,049 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:10:28,067 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;@5a872d9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:10:28,068 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:10:28,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:28,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 14:10:28,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:28,082 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:28,083 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:28,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:28,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1615150307, now seen corresponding path program 1 times [2024-11-13 14:10:28,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:28,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918653365] [2024-11-13 14:10:28,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:28,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:28,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:28,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918653365] [2024-11-13 14:10:28,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918653365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:10:28,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:10:28,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:10:28,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617904102] [2024-11-13 14:10:28,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:10:28,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:10:28,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:28,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:10:28,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:10:28,397 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:28,417 INFO L93 Difference]: Finished difference Result 36 states and 52 transitions. [2024-11-13 14:10:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:10:28,422 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 14:10:28,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:28,431 INFO L225 Difference]: With dead ends: 36 [2024-11-13 14:10:28,432 INFO L226 Difference]: Without dead ends: 16 [2024-11-13 14:10:28,437 INFO L431 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 [2024-11-13 14:10:28,442 INFO L432 NwaCegarLoop]: 24 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, 24 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 [2024-11-13 14:10:28,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:10:28,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-13 14:10:28,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-13 14:10:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2024-11-13 14:10:28,485 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 13 [2024-11-13 14:10:28,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:28,485 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2024-11-13 14:10:28,486 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:28,486 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2024-11-13 14:10:28,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 14:10:28,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:28,487 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:28,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:10:28,487 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:28,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:28,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1222123297, now seen corresponding path program 1 times [2024-11-13 14:10:28,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:28,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800666304] [2024-11-13 14:10:28,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:28,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:28,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:28,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800666304] [2024-11-13 14:10:28,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800666304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:10:28,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:10:28,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:10:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465365010] [2024-11-13 14:10:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:10:28,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:10:28,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:28,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:10:28,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:10:28,727 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:28,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:28,807 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2024-11-13 14:10:28,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:10:28,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 14:10:28,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:28,809 INFO L225 Difference]: With dead ends: 31 [2024-11-13 14:10:28,809 INFO L226 Difference]: Without dead ends: 21 [2024-11-13 14:10:28,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:10:28,810 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:28,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 11 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:10:28,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-13 14:10:28,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-11-13 14:10:28,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-11-13 14:10:28,820 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2024-11-13 14:10:28,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:28,820 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-11-13 14:10:28,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:28,820 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-11-13 14:10:28,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 14:10:28,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:28,821 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:28,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:10:28,821 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:28,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:28,824 INFO L85 PathProgramCache]: Analyzing trace with hash -770934304, now seen corresponding path program 1 times [2024-11-13 14:10:28,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:28,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007890259] [2024-11-13 14:10:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:28,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:30,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:30,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007890259] [2024-11-13 14:10:30,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007890259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:30,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981958919] [2024-11-13 14:10:30,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:30,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:30,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:30,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:30,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:10:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:30,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 14:10:30,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:30,551 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 [2024-11-13 14:10:30,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:10:30,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:10:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:31,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:31,257 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 35 treesize of output 31 [2024-11-13 14:10:31,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:10:31,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2024-11-13 14:10:31,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:31,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981958919] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:31,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:31,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 25 [2024-11-13 14:10:31,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860156126] [2024-11-13 14:10:31,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:31,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 14:10:31,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:31,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 14:10:31,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2024-11-13 14:10:31,517 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:32,267 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2024-11-13 14:10:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 14:10:32,267 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-13 14:10:32,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:32,269 INFO L225 Difference]: With dead ends: 41 [2024-11-13 14:10:32,270 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 14:10:32,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=236, Invalid=820, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 14:10:32,271 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 49 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:32,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 59 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:10:32,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 14:10:32,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2024-11-13 14:10:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-13 14:10:32,284 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 18 [2024-11-13 14:10:32,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:32,284 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-13 14:10:32,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-13 14:10:32,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 14:10:32,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:32,286 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:32,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:10:32,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:32,490 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:32,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:32,491 INFO L85 PathProgramCache]: Analyzing trace with hash -90875934, now seen corresponding path program 1 times [2024-11-13 14:10:32,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:32,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528490764] [2024-11-13 14:10:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:32,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:10:32,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:32,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528490764] [2024-11-13 14:10:32,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528490764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:32,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429101989] [2024-11-13 14:10:32,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:32,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:32,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:32,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:32,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:10:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:32,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:10:32,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:32,959 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 [2024-11-13 14:10:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:10:33,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:33,044 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 14 treesize of output 12 [2024-11-13 14:10:33,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 12 [2024-11-13 14:10:33,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:10:33,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429101989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:33,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:33,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-13 14:10:33,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391443959] [2024-11-13 14:10:33,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:33,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:10:33,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:33,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:10:33,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:10:33,063 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:33,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:33,154 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2024-11-13 14:10:33,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:10:33,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-13 14:10:33,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:33,156 INFO L225 Difference]: With dead ends: 42 [2024-11-13 14:10:33,156 INFO L226 Difference]: Without dead ends: 32 [2024-11-13 14:10:33,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:10:33,157 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:33,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:10:33,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-13 14:10:33,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-13 14:10:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-13 14:10:33,169 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 18 [2024-11-13 14:10:33,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:33,169 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-13 14:10:33,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:33,169 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-13 14:10:33,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 14:10:33,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:33,170 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:33,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:10:33,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:33,370 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:33,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:33,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1872505765, now seen corresponding path program 2 times [2024-11-13 14:10:33,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:33,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012154107] [2024-11-13 14:10:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:33,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:10:33,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:33,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012154107] [2024-11-13 14:10:33,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012154107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:33,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930940602] [2024-11-13 14:10:33,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:10:33,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:33,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:33,555 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:33,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:10:33,654 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:10:33,655 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:10:33,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:10:33,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:10:33,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:10:33,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930940602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:33,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:33,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 14:10:33,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575141585] [2024-11-13 14:10:33,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:33,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:10:33,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:33,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:10:33,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:10:33,781 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:33,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:33,913 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2024-11-13 14:10:33,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:10:33,914 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-13 14:10:33,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:33,914 INFO L225 Difference]: With dead ends: 56 [2024-11-13 14:10:33,914 INFO L226 Difference]: Without dead ends: 33 [2024-11-13 14:10:33,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:10:33,915 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:33,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 22 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:10:33,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-13 14:10:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2024-11-13 14:10:33,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-13 14:10:33,923 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2024-11-13 14:10:33,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:33,923 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-13 14:10:33,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:33,923 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-13 14:10:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 14:10:33,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:33,924 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:33,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 14:10:34,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:34,128 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:34,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:34,129 INFO L85 PathProgramCache]: Analyzing trace with hash 855080854, now seen corresponding path program 3 times [2024-11-13 14:10:34,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:34,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493468805] [2024-11-13 14:10:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:34,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:10:34,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:34,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493468805] [2024-11-13 14:10:34,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493468805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:34,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249789894] [2024-11-13 14:10:34,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:10:34,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:34,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:34,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:34,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:10:34,387 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 14:10:34,387 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:10:34,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:10:34,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:10:34,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:10:34,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249789894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:34,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:34,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 14:10:34,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493498395] [2024-11-13 14:10:34,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:34,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:10:34,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:34,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:10:34,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:10:34,518 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:34,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:34,658 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2024-11-13 14:10:34,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:10:34,659 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-13 14:10:34,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:34,660 INFO L225 Difference]: With dead ends: 33 [2024-11-13 14:10:34,660 INFO L226 Difference]: Without dead ends: 26 [2024-11-13 14:10:34,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:10:34,661 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:34,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 32 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:10:34,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-13 14:10:34,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-11-13 14:10:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-13 14:10:34,674 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 19 [2024-11-13 14:10:34,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:34,674 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-13 14:10:34,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:34,674 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-13 14:10:34,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 14:10:34,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:34,676 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:34,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:10:34,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:34,880 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:34,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1020304897, now seen corresponding path program 4 times [2024-11-13 14:10:34,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:34,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675294125] [2024-11-13 14:10:34,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:34,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:36,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:36,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675294125] [2024-11-13 14:10:36,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675294125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:36,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538420018] [2024-11-13 14:10:36,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:10:36,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:36,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:36,702 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:36,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:10:36,813 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:10:36,814 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:10:36,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 14:10:36,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:36,834 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 [2024-11-13 14:10:37,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:10:37,297 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:10:37,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-13 14:10:37,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:10:37,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:10:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:37,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:38,164 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 78 treesize of output 70 [2024-11-13 14:10:38,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:10:38,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 386 treesize of output 383 [2024-11-13 14:10:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:38,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538420018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:38,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:38,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 43 [2024-11-13 14:10:38,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546852008] [2024-11-13 14:10:38,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:38,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-13 14:10:38,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:38,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-13 14:10:38,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1523, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 14:10:38,626 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 43 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 43 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:40,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:40,845 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2024-11-13 14:10:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 14:10:40,846 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 43 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-13 14:10:40,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:40,847 INFO L225 Difference]: With dead ends: 71 [2024-11-13 14:10:40,847 INFO L226 Difference]: Without dead ends: 58 [2024-11-13 14:10:40,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=699, Invalid=3333, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 14:10:40,850 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 60 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:40,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 82 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:10:40,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-13 14:10:40,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 42. [2024-11-13 14:10:40,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:40,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2024-11-13 14:10:40,862 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 23 [2024-11-13 14:10:40,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:40,862 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2024-11-13 14:10:40,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 43 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:40,862 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2024-11-13 14:10:40,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 14:10:40,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:40,863 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:40,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:10:41,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 14:10:41,067 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:41,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:41,067 INFO L85 PathProgramCache]: Analyzing trace with hash 627277887, now seen corresponding path program 1 times [2024-11-13 14:10:41,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:41,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104212427] [2024-11-13 14:10:41,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:41,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:10:41,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:41,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104212427] [2024-11-13 14:10:41,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104212427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:41,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918889860] [2024-11-13 14:10:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:41,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:41,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:41,405 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:41,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:10:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:41,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 14:10:41,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:41,530 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 [2024-11-13 14:10:41,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:10:41,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-13 14:10:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:10:41,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:41,677 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 16 treesize of output 14 [2024-11-13 14:10:41,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-13 14:10:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:10:41,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918889860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:41,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:41,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-13 14:10:41,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066245149] [2024-11-13 14:10:41,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:41,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 14:10:41,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:41,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 14:10:41,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:10:41,710 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:41,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:41,846 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2024-11-13 14:10:41,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:10:41,846 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-13 14:10:41,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:41,848 INFO L225 Difference]: With dead ends: 69 [2024-11-13 14:10:41,848 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 14:10:41,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:10:41,849 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:41,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 77 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:10:41,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 14:10:41,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2024-11-13 14:10:41,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:41,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2024-11-13 14:10:41,861 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2024-11-13 14:10:41,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:41,861 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2024-11-13 14:10:41,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2024-11-13 14:10:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 14:10:41,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:41,862 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:41,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:10:42,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 14:10:42,063 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:42,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:42,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1566346148, now seen corresponding path program 5 times [2024-11-13 14:10:42,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:42,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062292847] [2024-11-13 14:10:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:42,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:10:42,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:42,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062292847] [2024-11-13 14:10:42,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062292847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:42,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874183133] [2024-11-13 14:10:42,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:10:42,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:42,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:42,188 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:42,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:10:42,285 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-13 14:10:42,285 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:10:42,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:10:42,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:10:42,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:10:42,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874183133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:42,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:42,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-13 14:10:42,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139009147] [2024-11-13 14:10:42,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:42,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:10:42,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:42,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:10:42,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:10:42,438 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:42,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:42,595 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2024-11-13 14:10:42,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:10:42,596 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-13 14:10:42,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:42,597 INFO L225 Difference]: With dead ends: 70 [2024-11-13 14:10:42,597 INFO L226 Difference]: Without dead ends: 39 [2024-11-13 14:10:42,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:10:42,598 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:42,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 38 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:10:42,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-13 14:10:42,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2024-11-13 14:10:42,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-13 14:10:42,609 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 24 [2024-11-13 14:10:42,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:42,610 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-13 14:10:42,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-13 14:10:42,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 14:10:42,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:42,610 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:42,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 14:10:42,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 14:10:42,811 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:42,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:42,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1972550155, now seen corresponding path program 6 times [2024-11-13 14:10:42,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:42,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190224638] [2024-11-13 14:10:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:42,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 14:10:42,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:42,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190224638] [2024-11-13 14:10:42,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190224638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:42,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904703415] [2024-11-13 14:10:42,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:10:42,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:42,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:42,957 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:42,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:10:43,066 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 14:10:43,066 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:10:43,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:10:43,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:43,147 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:10:43,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:10:43,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904703415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:43,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:43,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-13 14:10:43,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785915645] [2024-11-13 14:10:43,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:43,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:10:43,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:43,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:10:43,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:10:43,219 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:43,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:43,355 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-13 14:10:43,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:10:43,355 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-13 14:10:43,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:43,356 INFO L225 Difference]: With dead ends: 39 [2024-11-13 14:10:43,356 INFO L226 Difference]: Without dead ends: 31 [2024-11-13 14:10:43,356 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:10:43,357 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:43,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 31 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:10:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-13 14:10:43,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-13 14:10:43,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:43,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2024-11-13 14:10:43,364 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 24 [2024-11-13 14:10:43,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:43,365 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2024-11-13 14:10:43,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:43,365 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2024-11-13 14:10:43,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 14:10:43,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:43,366 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:43,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:10:43,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:43,566 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:43,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:43,567 INFO L85 PathProgramCache]: Analyzing trace with hash 372726528, now seen corresponding path program 7 times [2024-11-13 14:10:43,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:43,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495214922] [2024-11-13 14:10:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:43,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:45,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:45,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495214922] [2024-11-13 14:10:45,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495214922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:45,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484625495] [2024-11-13 14:10:45,619 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:10:45,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:45,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:45,624 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:45,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:10:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:45,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-13 14:10:45,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:45,752 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 [2024-11-13 14:10:45,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:10:46,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:10:46,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-13 14:10:46,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:10:46,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-13 14:10:46,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:10:46,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:10:46,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:10:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:46,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:47,698 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 137 treesize of output 125 [2024-11-13 14:10:47,770 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:10:47,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 11693 treesize of output 11111 [2024-11-13 14:10:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:48,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484625495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:48,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:48,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 21] total 54 [2024-11-13 14:10:48,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325181362] [2024-11-13 14:10:48,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:48,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-13 14:10:48,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:48,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-13 14:10:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=2553, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 14:10:48,313 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 54 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 54 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:49,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:49,804 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2024-11-13 14:10:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 14:10:49,805 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 54 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-13 14:10:49,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:49,806 INFO L225 Difference]: With dead ends: 65 [2024-11-13 14:10:49,806 INFO L226 Difference]: Without dead ends: 53 [2024-11-13 14:10:49,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=401, Invalid=3139, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 14:10:49,808 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:49,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 132 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:10:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-13 14:10:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2024-11-13 14:10:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2024-11-13 14:10:49,820 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 28 [2024-11-13 14:10:49,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:49,820 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2024-11-13 14:10:49,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 54 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:49,821 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-11-13 14:10:49,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 14:10:49,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:49,821 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:49,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 14:10:50,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:50,025 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:50,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1073791106, now seen corresponding path program 2 times [2024-11-13 14:10:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:50,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736402762] [2024-11-13 14:10:50,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:50,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:50,417 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:10:50,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:50,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736402762] [2024-11-13 14:10:50,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736402762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:50,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229455109] [2024-11-13 14:10:50,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:10:50,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:50,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:50,420 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:50,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:10:50,532 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:10:50,533 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:10:50,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 14:10:50,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:50,599 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 [2024-11-13 14:10:50,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:10:50,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-13 14:10:50,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:10:50,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-13 14:10:50,814 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:10:50,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:50,867 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 16 treesize of output 14 [2024-11-13 14:10:50,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-13 14:10:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:10:50,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229455109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:50,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:50,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-13 14:10:50,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372776138] [2024-11-13 14:10:50,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:50,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:10:50,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:50,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:10:50,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:10:50,880 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:51,056 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2024-11-13 14:10:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:10:51,057 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-13 14:10:51,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:51,057 INFO L225 Difference]: With dead ends: 57 [2024-11-13 14:10:51,057 INFO L226 Difference]: Without dead ends: 45 [2024-11-13 14:10:51,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:10:51,058 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:51,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 86 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:10:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-13 14:10:51,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-11-13 14:10:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2024-11-13 14:10:51,075 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2024-11-13 14:10:51,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:51,076 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2024-11-13 14:10:51,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:51,076 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2024-11-13 14:10:51,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 14:10:51,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:51,078 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:51,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 14:10:51,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:51,279 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:51,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:51,280 INFO L85 PathProgramCache]: Analyzing trace with hash -545835722, now seen corresponding path program 8 times [2024-11-13 14:10:51,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:51,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383050805] [2024-11-13 14:10:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:51,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:10:51,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:51,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383050805] [2024-11-13 14:10:51,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383050805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:51,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910150685] [2024-11-13 14:10:51,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:10:51,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:51,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:51,468 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:51,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:10:51,591 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:10:51,591 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:10:51,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 14:10:51,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:10:51,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:10:51,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910150685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:51,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:51,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-13 14:10:51,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912062377] [2024-11-13 14:10:51,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:51,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 14:10:51,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:51,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 14:10:51,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:10:51,829 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:52,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:52,160 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-11-13 14:10:52,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:10:52,162 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-13 14:10:52,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:52,162 INFO L225 Difference]: With dead ends: 59 [2024-11-13 14:10:52,164 INFO L226 Difference]: Without dead ends: 50 [2024-11-13 14:10:52,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 44 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2024-11-13 14:10:52,165 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 25 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:52,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 49 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:10:52,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-13 14:10:52,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2024-11-13 14:10:52,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1333333333333333) internal successors, (51), 45 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2024-11-13 14:10:52,185 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 29 [2024-11-13 14:10:52,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:52,185 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2024-11-13 14:10:52,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:52,186 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2024-11-13 14:10:52,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 14:10:52,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:52,189 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:52,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 14:10:52,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 14:10:52,390 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:52,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:52,390 INFO L85 PathProgramCache]: Analyzing trace with hash 484221033, now seen corresponding path program 3 times [2024-11-13 14:10:52,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:52,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992821251] [2024-11-13 14:10:52,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:52,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:10:52,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:52,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992821251] [2024-11-13 14:10:52,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992821251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:52,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569972428] [2024-11-13 14:10:52,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:10:52,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:52,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:52,563 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:52,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:10:52,693 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 14:10:52,693 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:10:52,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 14:10:52,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 14:10:52,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 14:10:52,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569972428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:10:52,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:10:52,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-13 14:10:52,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755976520] [2024-11-13 14:10:52,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:10:52,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 14:10:52,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:10:52,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 14:10:52,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:10:52,916 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:53,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:53,060 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2024-11-13 14:10:53,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:10:53,061 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-13 14:10:53,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:53,061 INFO L225 Difference]: With dead ends: 63 [2024-11-13 14:10:53,061 INFO L226 Difference]: Without dead ends: 36 [2024-11-13 14:10:53,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:10:53,062 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:53,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 44 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:10:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-13 14:10:53,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-13 14:10:53,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:53,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2024-11-13 14:10:53,075 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 32 [2024-11-13 14:10:53,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:53,075 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2024-11-13 14:10:53,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:10:53,075 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2024-11-13 14:10:53,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 14:10:53,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:53,077 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:53,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 14:10:53,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:53,278 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:10:53,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:53,278 INFO L85 PathProgramCache]: Analyzing trace with hash 573908193, now seen corresponding path program 9 times [2024-11-13 14:10:53,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:10:53,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236382674] [2024-11-13 14:10:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:53,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:10:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:56,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:10:56,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236382674] [2024-11-13 14:10:56,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236382674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:10:56,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289515452] [2024-11-13 14:10:56,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:10:56,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:56,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:56,016 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:56,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:10:56,174 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 14:10:56,174 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:10:56,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-13 14:10:56,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:56,197 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 [2024-11-13 14:10:56,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:10:56,680 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:10:56,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-13 14:10:56,853 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2024-11-13 14:10:56,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 41 [2024-11-13 14:10:57,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:10:57,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:10:57,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:10:57,219 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-13 14:10:57,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 48 treesize of output 51 [2024-11-13 14:10:57,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:10:57,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:10:57,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 29 treesize of output 21 [2024-11-13 14:10:58,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:10:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:58,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:10:59,609 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 135 treesize of output 123 [2024-11-13 14:10:59,676 INFO L349 Elim1Store]: treesize reduction 72, result has 32.7 percent of original size [2024-11-13 14:10:59,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 424 treesize of output 407 [2024-11-13 14:11:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:11:00,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289515452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:11:00,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:11:00,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28, 28] total 75 [2024-11-13 14:11:00,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297296852] [2024-11-13 14:11:00,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:00,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-13 14:11:00,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:00,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-13 14:11:00,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=843, Invalid=4707, Unknown=0, NotChecked=0, Total=5550 [2024-11-13 14:11:00,253 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 75 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 75 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:15,534 INFO L93 Difference]: Finished difference Result 163 states and 217 transitions. [2024-11-13 14:11:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-13 14:11:15,535 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 75 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-13 14:11:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:15,535 INFO L225 Difference]: With dead ends: 163 [2024-11-13 14:11:15,536 INFO L226 Difference]: Without dead ends: 144 [2024-11-13 14:11:15,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9897 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=4877, Invalid=23179, Unknown=0, NotChecked=0, Total=28056 [2024-11-13 14:11:15,542 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 184 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:15,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 136 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 14:11:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-13 14:11:15,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 116. [2024-11-13 14:11:15,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.2782608695652173) internal successors, (147), 115 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 147 transitions. [2024-11-13 14:11:15,582 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 147 transitions. Word has length 33 [2024-11-13 14:11:15,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:15,582 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 147 transitions. [2024-11-13 14:11:15,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 75 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:15,582 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 147 transitions. [2024-11-13 14:11:15,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 14:11:15,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:15,583 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:11:15,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 14:11:15,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 14:11:15,787 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:11:15,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:15,787 INFO L85 PathProgramCache]: Analyzing trace with hash 832073631, now seen corresponding path program 4 times [2024-11-13 14:11:15,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:15,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539956881] [2024-11-13 14:11:15,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:15,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:11:16,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:16,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539956881] [2024-11-13 14:11:16,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539956881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:16,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577115096] [2024-11-13 14:11:16,315 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:11:16,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:16,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:16,317 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:16,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 14:11:16,439 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:11:16,439 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:11:16,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 14:11:16,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:16,451 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 15 treesize of output 11 [2024-11-13 14:11:16,587 INFO L349 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2024-11-13 14:11:16,587 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 37 [2024-11-13 14:11:16,712 INFO L349 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2024-11-13 14:11:16,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 58 [2024-11-13 14:11:16,907 INFO L349 Elim1Store]: treesize reduction 35, result has 41.7 percent of original size [2024-11-13 14:11:16,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 69 treesize of output 80 [2024-11-13 14:11:17,177 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:11:17,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 12 [2024-11-13 14:11:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:11:17,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:11:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:11:17,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577115096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:11:17,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:11:17,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 33 [2024-11-13 14:11:17,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582100295] [2024-11-13 14:11:17,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:17,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 14:11:17,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:17,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 14:11:17,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 14:11:17,595 INFO L87 Difference]: Start difference. First operand 116 states and 147 transitions. Second operand has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:18,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:18,965 INFO L93 Difference]: Finished difference Result 190 states and 245 transitions. [2024-11-13 14:11:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 14:11:18,966 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-13 14:11:18,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:18,967 INFO L225 Difference]: With dead ends: 190 [2024-11-13 14:11:18,967 INFO L226 Difference]: Without dead ends: 119 [2024-11-13 14:11:18,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=548, Invalid=3112, Unknown=0, NotChecked=0, Total=3660 [2024-11-13 14:11:18,968 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:18,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 59 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:11:18,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-13 14:11:19,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2024-11-13 14:11:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.2272727272727273) internal successors, (135), 110 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 135 transitions. [2024-11-13 14:11:19,010 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 135 transitions. Word has length 33 [2024-11-13 14:11:19,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:19,011 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 135 transitions. [2024-11-13 14:11:19,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 33 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:19,011 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 135 transitions. [2024-11-13 14:11:19,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 14:11:19,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:19,013 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:11:19,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 14:11:19,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 14:11:19,214 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:11:19,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:19,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1527563157, now seen corresponding path program 10 times [2024-11-13 14:11:19,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:19,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58201935] [2024-11-13 14:11:19,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:19,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:11:19,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:19,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58201935] [2024-11-13 14:11:19,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58201935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:19,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692583744] [2024-11-13 14:11:19,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:11:19,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:19,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:19,417 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:19,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 14:11:19,618 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:11:19,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:11:19,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 14:11:19,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:11:19,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:11:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:11:19,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692583744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:11:19,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:11:19,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-13 14:11:19,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827419153] [2024-11-13 14:11:19,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:19,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 14:11:19,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:19,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 14:11:19,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:11:19,912 INFO L87 Difference]: Start difference. First operand 111 states and 135 transitions. Second operand has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:20,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:20,367 INFO L93 Difference]: Finished difference Result 132 states and 157 transitions. [2024-11-13 14:11:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 14:11:20,368 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-13 14:11:20,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:20,369 INFO L225 Difference]: With dead ends: 132 [2024-11-13 14:11:20,369 INFO L226 Difference]: Without dead ends: 122 [2024-11-13 14:11:20,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 51 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2024-11-13 14:11:20,370 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:20,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 48 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:11:20,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-13 14:11:20,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 106. [2024-11-13 14:11:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 105 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:20,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 128 transitions. [2024-11-13 14:11:20,409 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 128 transitions. Word has length 34 [2024-11-13 14:11:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:20,410 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 128 transitions. [2024-11-13 14:11:20,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:20,410 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 128 transitions. [2024-11-13 14:11:20,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 14:11:20,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:20,411 INFO L215 NwaCegarLoop]: trace histogram [9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:11:20,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 14:11:20,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 14:11:20,615 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:11:20,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:20,616 INFO L85 PathProgramCache]: Analyzing trace with hash -273442812, now seen corresponding path program 11 times [2024-11-13 14:11:20,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:20,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340411409] [2024-11-13 14:11:20,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:20,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 37 proven. 18 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 14:11:20,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:20,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340411409] [2024-11-13 14:11:20,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340411409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:20,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872097497] [2024-11-13 14:11:20,960 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:11:20,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:20,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:20,962 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:20,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 14:11:21,670 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-13 14:11:21,670 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:11:21,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 14:11:21,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-13 14:11:21,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:11:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-13 14:11:21,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872097497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:11:21,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:11:21,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 24 [2024-11-13 14:11:21,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672531408] [2024-11-13 14:11:21,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:21,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 14:11:21,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:21,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 14:11:21,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:11:21,905 INFO L87 Difference]: Start difference. First operand 106 states and 128 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:22,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:22,154 INFO L93 Difference]: Finished difference Result 122 states and 144 transitions. [2024-11-13 14:11:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:11:22,155 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-13 14:11:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:22,156 INFO L225 Difference]: With dead ends: 122 [2024-11-13 14:11:22,156 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 14:11:22,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 60 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:11:22,157 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 69 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:22,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 46 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:11:22,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 14:11:22,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-13 14:11:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:22,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2024-11-13 14:11:22,176 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 38 [2024-11-13 14:11:22,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:22,176 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2024-11-13 14:11:22,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 24 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2024-11-13 14:11:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 14:11:22,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:22,177 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:11:22,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 14:11:22,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 14:11:22,377 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:11:22,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1357591584, now seen corresponding path program 12 times [2024-11-13 14:11:22,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:22,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631631849] [2024-11-13 14:11:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:11:25,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:25,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631631849] [2024-11-13 14:11:25,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631631849] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:25,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301172180] [2024-11-13 14:11:25,241 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:11:25,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:25,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:25,243 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:25,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 14:11:25,427 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-13 14:11:25,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:11:25,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-11-13 14:11:25,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:25,438 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 [2024-11-13 14:11:25,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:11:25,806 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-13 14:11:25,806 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 27 [2024-11-13 14:11:26,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:11:26,100 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-13 14:11:26,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 41 [2024-11-13 14:11:26,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:11:26,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:11:26,429 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-13 14:11:26,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 52 treesize of output 55 [2024-11-13 14:11:26,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:11:26,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:11:26,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:11:26,826 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-13 14:11:26,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 63 treesize of output 69 [2024-11-13 14:11:27,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:11:27,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:11:27,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:11:27,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 29 treesize of output 21 [2024-11-13 14:11:27,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 41 treesize of output 29 [2024-11-13 14:11:27,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:11:27,926 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:11:27,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 60 treesize of output 98 [2024-11-13 14:11:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 23 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:11:28,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:11:30,962 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 240 treesize of output 224 [2024-11-13 14:11:31,162 INFO L349 Elim1Store]: treesize reduction 40, result has 75.2 percent of original size [2024-11-13 14:11:31,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 701504 treesize of output 691350 [2024-11-13 14:11:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:11:34,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301172180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:11:34,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:11:34,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 33] total 85 [2024-11-13 14:11:34,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75795003] [2024-11-13 14:11:34,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:34,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-11-13 14:11:34,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:34,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-11-13 14:11:34,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=745, Invalid=6395, Unknown=0, NotChecked=0, Total=7140 [2024-11-13 14:11:34,204 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 85 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 85 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:53,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:53,674 INFO L93 Difference]: Finished difference Result 183 states and 235 transitions. [2024-11-13 14:11:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-13 14:11:53,674 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 85 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-13 14:11:53,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:53,675 INFO L225 Difference]: With dead ends: 183 [2024-11-13 14:11:53,675 INFO L226 Difference]: Without dead ends: 169 [2024-11-13 14:11:53,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11022 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=4579, Invalid=30577, Unknown=0, NotChecked=0, Total=35156 [2024-11-13 14:11:53,682 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 172 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 2160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:53,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 161 Invalid, 2160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 14:11:53,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-13 14:11:53,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 127. [2024-11-13 14:11:53,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.3095238095238095) internal successors, (165), 126 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:53,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 165 transitions. [2024-11-13 14:11:53,739 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 165 transitions. Word has length 38 [2024-11-13 14:11:53,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:53,740 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 165 transitions. [2024-11-13 14:11:53,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 85 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 165 transitions. [2024-11-13 14:11:53,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 14:11:53,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:53,740 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:11:53,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 14:11:53,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:53,941 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:11:53,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:53,942 INFO L85 PathProgramCache]: Analyzing trace with hash -862668443, now seen corresponding path program 13 times [2024-11-13 14:11:53,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:53,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769452328] [2024-11-13 14:11:53,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:53,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 14:11:54,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:54,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769452328] [2024-11-13 14:11:54,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769452328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:54,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616007272] [2024-11-13 14:11:54,187 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:11:54,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:54,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:54,189 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:54,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 14:11:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:54,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 14:11:54,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 14:11:54,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:11:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 14:11:54,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616007272] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:11:54,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:11:54,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-13 14:11:54,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918094748] [2024-11-13 14:11:54,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:54,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 14:11:54,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:54,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 14:11:54,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:11:54,624 INFO L87 Difference]: Start difference. First operand 127 states and 165 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:54,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:54,901 INFO L93 Difference]: Finished difference Result 165 states and 207 transitions. [2024-11-13 14:11:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:11:54,901 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-13 14:11:54,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:54,902 INFO L225 Difference]: With dead ends: 165 [2024-11-13 14:11:54,902 INFO L226 Difference]: Without dead ends: 65 [2024-11-13 14:11:54,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 59 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:11:54,903 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 76 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:54,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 42 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:11:54,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-13 14:11:54,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2024-11-13 14:11:54,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.152542372881356) internal successors, (68), 59 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:54,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2024-11-13 14:11:54,929 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 39 [2024-11-13 14:11:54,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:54,930 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2024-11-13 14:11:54,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:54,930 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2024-11-13 14:11:54,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 14:11:54,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:54,930 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:11:54,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 14:11:55,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:55,131 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:11:55,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:55,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2080042, now seen corresponding path program 14 times [2024-11-13 14:11:55,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:55,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144868094] [2024-11-13 14:11:55,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:55,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:11:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 10 proven. 46 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:11:55,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:11:55,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144868094] [2024-11-13 14:11:55,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144868094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:11:55,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089386228] [2024-11-13 14:11:55,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:11:55,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:11:55,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:11:55,415 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:11:55,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 14:11:55,591 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:11:55,591 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:11:55,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 14:11:55,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:11:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 15 proven. 41 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:11:55,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:11:55,977 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 15 proven. 41 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:11:55,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089386228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:11:55,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:11:55,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-13 14:11:55,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143535638] [2024-11-13 14:11:55,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:11:55,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 14:11:55,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:11:55,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 14:11:55,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:11:55,980 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:56,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:11:56,307 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2024-11-13 14:11:56,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:11:56,308 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-13 14:11:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:11:56,308 INFO L225 Difference]: With dead ends: 65 [2024-11-13 14:11:56,308 INFO L226 Difference]: Without dead ends: 54 [2024-11-13 14:11:56,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 58 SyntacticMatches, 12 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2024-11-13 14:11:56,309 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 61 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:11:56,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 35 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:11:56,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-13 14:11:56,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2024-11-13 14:11:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2024-11-13 14:11:56,326 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 39 [2024-11-13 14:11:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:11:56,326 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2024-11-13 14:11:56,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:11:56,326 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2024-11-13 14:11:56,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 14:11:56,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:11:56,327 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:11:56,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 14:11:56,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 14:11:56,527 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:11:56,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:11:56,528 INFO L85 PathProgramCache]: Analyzing trace with hash -613174335, now seen corresponding path program 15 times [2024-11-13 14:11:56,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:11:56,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397853101] [2024-11-13 14:11:56,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:11:56,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:11:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:12:00,865 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:12:00,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:12:00,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397853101] [2024-11-13 14:12:00,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397853101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:12:00,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923622567] [2024-11-13 14:12:00,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:12:00,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:12:00,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:12:00,867 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:12:00,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 14:12:01,128 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-13 14:12:01,128 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:12:01,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-13 14:12:01,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:12:01,141 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 [2024-11-13 14:12:01,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:12:01,424 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:12:01,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-13 14:12:01,583 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2024-11-13 14:12:01,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 41 [2024-11-13 14:12:01,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:01,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:01,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:01,860 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-13 14:12:01,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 48 treesize of output 51 [2024-11-13 14:12:02,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:02,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:02,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:02,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:02,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:02,214 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-13 14:12:02,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 59 treesize of output 65 [2024-11-13 14:12:02,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:02,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:02,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:02,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:02,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:02,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:02,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:02,669 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-13 14:12:02,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 70 treesize of output 79 [2024-11-13 14:12:03,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:12:03,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:12:03,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 25 treesize of output 17 [2024-11-13 14:12:03,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 35 treesize of output 23 [2024-11-13 14:12:04,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 40 treesize of output 28 [2024-11-13 14:12:04,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 45 treesize of output 33 [2024-11-13 14:12:04,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:04,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:04,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:04,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:04,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:04,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:04,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:04,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:04,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:04,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:04,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:04,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:04,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:04,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:12:04,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:12:04,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 35 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 87 treesize of output 111 [2024-11-13 14:12:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 23 proven. 60 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:12:04,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:12:07,472 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 176 treesize of output 160 [2024-11-13 14:12:07,524 INFO L349 Elim1Store]: treesize reduction 72, result has 27.3 percent of original size [2024-11-13 14:12:07,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 401 treesize of output 374 [2024-11-13 14:12:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 14:12:07,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923622567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:12:07,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:12:07,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 32, 31] total 93 [2024-11-13 14:12:07,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130042659] [2024-11-13 14:12:07,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:12:07,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2024-11-13 14:12:07,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:12:07,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2024-11-13 14:12:07,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1196, Invalid=7360, Unknown=0, NotChecked=0, Total=8556 [2024-11-13 14:12:07,738 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 93 states, 93 states have (on average 1.1505376344086022) internal successors, (107), 93 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:13:07,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:13:07,664 INFO L93 Difference]: Finished difference Result 351 states and 476 transitions. [2024-11-13 14:13:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 306 states. [2024-11-13 14:13:07,664 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.1505376344086022) internal successors, (107), 93 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-13 14:13:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:13:07,666 INFO L225 Difference]: With dead ends: 351 [2024-11-13 14:13:07,666 INFO L226 Difference]: Without dead ends: 335 [2024-11-13 14:13:07,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54545 ImplicationChecksByTransitivity, 62.5s TimeCoverageRelationStatistics Valid=17791, Invalid=120221, Unknown=0, NotChecked=0, Total=138012 [2024-11-13 14:13:07,677 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 415 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 2156 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 2928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:13:07,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 166 Invalid, 2928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2156 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-13 14:13:07,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-13 14:13:07,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 243. [2024-11-13 14:13:07,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.396694214876033) internal successors, (338), 242 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:13:07,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 338 transitions. [2024-11-13 14:13:07,758 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 338 transitions. Word has length 43 [2024-11-13 14:13:07,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:13:07,759 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 338 transitions. [2024-11-13 14:13:07,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 1.1505376344086022) internal successors, (107), 93 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:13:07,759 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 338 transitions. [2024-11-13 14:13:07,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 14:13:07,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:13:07,760 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:13:07,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 14:13:07,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 14:13:07,960 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:13:07,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:07,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2093445059, now seen corresponding path program 5 times [2024-11-13 14:13:07,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:07,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260116738] [2024-11-13 14:13:07,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:07,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 1 proven. 71 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 14:13:09,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:09,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260116738] [2024-11-13 14:13:09,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260116738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:13:09,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074045339] [2024-11-13 14:13:09,022 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:13:09,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:13:09,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:13:09,024 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:13:09,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 14:13:09,390 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-13 14:13:09,390 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:13:09,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 14:13:09,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:13:09,495 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 13 treesize of output 9 [2024-11-13 14:13:09,529 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-13 14:13:09,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2024-11-13 14:13:09,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:13:09,585 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 1 case distinctions, treesize of input 27 treesize of output 22 [2024-11-13 14:13:09,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:13:09,629 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 1 case distinctions, treesize of input 31 treesize of output 24 [2024-11-13 14:13:09,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:13:09,673 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 1 case distinctions, treesize of input 31 treesize of output 24 [2024-11-13 14:13:09,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:13:09,712 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 1 case distinctions, treesize of input 31 treesize of output 24 [2024-11-13 14:13:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 14:13:09,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:13:09,972 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 23 treesize of output 21 [2024-11-13 14:13:09,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 42 treesize of output 38 [2024-11-13 14:13:09,995 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 14:13:09,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074045339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:13:09,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:13:09,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 37 [2024-11-13 14:13:09,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419352288] [2024-11-13 14:13:09,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:13:09,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 14:13:09,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:09,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 14:13:09,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1200, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 14:13:09,997 INFO L87 Difference]: Start difference. First operand 243 states and 338 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:13:10,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:13:10,768 INFO L93 Difference]: Finished difference Result 418 states and 590 transitions. [2024-11-13 14:13:10,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 14:13:10,769 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-13 14:13:10,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:13:10,770 INFO L225 Difference]: With dead ends: 418 [2024-11-13 14:13:10,770 INFO L226 Difference]: Without dead ends: 229 [2024-11-13 14:13:10,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=272, Invalid=2080, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 14:13:10,771 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 28 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:13:10,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 120 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:13:10,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-13 14:13:10,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 219. [2024-11-13 14:13:10,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.385321100917431) internal successors, (302), 218 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:13:10,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 302 transitions. [2024-11-13 14:13:10,851 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 302 transitions. Word has length 43 [2024-11-13 14:13:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:13:10,851 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 302 transitions. [2024-11-13 14:13:10,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:13:10,851 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 302 transitions. [2024-11-13 14:13:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 14:13:10,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:13:10,852 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:13:10,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 14:13:11,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 14:13:11,052 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:13:11,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:11,053 INFO L85 PathProgramCache]: Analyzing trace with hash -796723167, now seen corresponding path program 16 times [2024-11-13 14:13:11,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:11,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862726399] [2024-11-13 14:13:11,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:11,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:11,313 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 29 proven. 28 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 14:13:11,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:11,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862726399] [2024-11-13 14:13:11,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862726399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:13:11,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97062995] [2024-11-13 14:13:11,314 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:13:11,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:13:11,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:13:11,315 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:13:11,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 14:13:11,465 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:13:11,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:13:11,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 14:13:11,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:13:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 14:13:11,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:13:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 14:13:11,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97062995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:13:11,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:13:11,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 27 [2024-11-13 14:13:11,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406171417] [2024-11-13 14:13:11,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:13:11,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 14:13:11,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:11,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 14:13:11,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2024-11-13 14:13:11,769 INFO L87 Difference]: Start difference. First operand 219 states and 302 transitions. Second operand has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 27 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:13:12,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:13:12,119 INFO L93 Difference]: Finished difference Result 253 states and 337 transitions. [2024-11-13 14:13:12,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:13:12,119 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 27 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-13 14:13:12,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:13:12,120 INFO L225 Difference]: With dead ends: 253 [2024-11-13 14:13:12,120 INFO L226 Difference]: Without dead ends: 118 [2024-11-13 14:13:12,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 68 SyntacticMatches, 13 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=267, Invalid=789, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 14:13:12,121 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 55 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:13:12,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 57 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:13:12,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-13 14:13:12,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2024-11-13 14:13:12,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.361904761904762) internal successors, (143), 105 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:13:12,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2024-11-13 14:13:12,177 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 143 transitions. Word has length 45 [2024-11-13 14:13:12,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:13:12,177 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-11-13 14:13:12,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 27 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:13:12,177 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 143 transitions. [2024-11-13 14:13:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 14:13:12,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:13:12,177 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:13:12,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 14:13:12,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 14:13:12,378 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:13:12,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:13:12,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1400505664, now seen corresponding path program 17 times [2024-11-13 14:13:12,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:13:12,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659725490] [2024-11-13 14:13:12,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:13:12,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:13:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:13:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:13:17,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:13:17,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659725490] [2024-11-13 14:13:17,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659725490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:13:17,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589529215] [2024-11-13 14:13:17,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:13:17,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:13:17,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:13:17,542 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:13:17,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 14:13:20,806 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-13 14:13:20,806 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:13:20,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-13 14:13:20,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:13:20,828 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 [2024-11-13 14:13:21,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:13:21,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:13:21,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-13 14:13:21,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:13:21,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-13 14:13:21,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:13:21,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-13 14:13:21,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:13:21,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-11-13 14:13:22,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:13:22,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 61 [2024-11-13 14:13:22,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:13:22,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 71 [2024-11-13 14:13:23,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:13:23,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:13:23,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:13:23,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:13:23,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:13:23,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:13:24,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:13:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:13:24,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:13:30,039 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 648 treesize of output 606 [2024-11-13 14:13:32,050 INFO L349 Elim1Store]: treesize reduction 210, result has 51.7 percent of original size [2024-11-13 14:13:32,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 12707670902 treesize of output 11113835558 [2024-11-13 14:13:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 14:13:34,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589529215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:13:34,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:13:34,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 40, 35] total 106 [2024-11-13 14:13:34,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466137927] [2024-11-13 14:13:34,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:13:34,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-11-13 14:13:34,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:13:34,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-11-13 14:13:34,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1214, Invalid=9916, Unknown=0, NotChecked=0, Total=11130 [2024-11-13 14:13:34,150 INFO L87 Difference]: Start difference. First operand 106 states and 143 transitions. Second operand has 106 states, 106 states have (on average 1.1320754716981132) internal successors, (120), 106 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:14:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:14:06,147 INFO L93 Difference]: Finished difference Result 321 states and 451 transitions. [2024-11-13 14:14:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2024-11-13 14:14:06,147 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.1320754716981132) internal successors, (120), 106 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-13 14:14:06,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:14:06,149 INFO L225 Difference]: With dead ends: 321 [2024-11-13 14:14:06,149 INFO L226 Difference]: Without dead ends: 265 [2024-11-13 14:14:06,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12981 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=4860, Invalid=37370, Unknown=0, NotChecked=0, Total=42230 [2024-11-13 14:14:06,152 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 214 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 3298 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 3675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 3298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:14:06,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 257 Invalid, 3675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 3298 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-13 14:14:06,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-13 14:14:06,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 222. [2024-11-13 14:14:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.330316742081448) internal successors, (294), 221 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:14:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 294 transitions. [2024-11-13 14:14:06,303 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 294 transitions. Word has length 48 [2024-11-13 14:14:06,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:14:06,303 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 294 transitions. [2024-11-13 14:14:06,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 1.1320754716981132) internal successors, (120), 106 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:14:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 294 transitions. [2024-11-13 14:14:06,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 14:14:06,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:14:06,304 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:14:06,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 14:14:06,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 14:14:06,505 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:14:06,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:14:06,505 INFO L85 PathProgramCache]: Analyzing trace with hash -593639042, now seen corresponding path program 6 times [2024-11-13 14:14:06,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:14:06,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015383691] [2024-11-13 14:14:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:14:06,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:14:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 83 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 14:14:07,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:14:07,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015383691] [2024-11-13 14:14:07,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015383691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:14:07,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152565138] [2024-11-13 14:14:07,638 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:14:07,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:14:07,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:14:07,641 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:14:07,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 14:14:08,119 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-13 14:14:08,119 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:14:08,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 14:14:08,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:14:08,150 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 16 treesize of output 12 [2024-11-13 14:14:08,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 16 [2024-11-13 14:14:08,322 INFO L349 Elim1Store]: treesize reduction 38, result has 24.0 percent of original size [2024-11-13 14:14:08,322 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 38 treesize of output 29 [2024-11-13 14:14:08,380 INFO L349 Elim1Store]: treesize reduction 38, result has 24.0 percent of original size [2024-11-13 14:14:08,380 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 38 treesize of output 29 [2024-11-13 14:14:08,450 INFO L349 Elim1Store]: treesize reduction 38, result has 24.0 percent of original size [2024-11-13 14:14:08,450 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 38 treesize of output 29 [2024-11-13 14:14:08,501 INFO L349 Elim1Store]: treesize reduction 21, result has 58.0 percent of original size [2024-11-13 14:14:08,502 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 38 treesize of output 45 [2024-11-13 14:14:08,667 INFO L349 Elim1Store]: treesize reduction 21, result has 58.0 percent of original size [2024-11-13 14:14:08,667 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 57 treesize of output 55 [2024-11-13 14:14:08,847 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:14:08,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 27 [2024-11-13 14:14:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 76 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-13 14:14:09,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:14:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 42 proven. 59 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 14:14:09,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152565138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:14:09,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:14:09,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 16] total 47 [2024-11-13 14:14:09,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716025987] [2024-11-13 14:14:09,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:14:09,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 14:14:09,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:14:09,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 14:14:09,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1800, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 14:14:09,774 INFO L87 Difference]: Start difference. First operand 222 states and 294 transitions. Second operand has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:14:11,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:14:11,300 INFO L93 Difference]: Finished difference Result 305 states and 395 transitions. [2024-11-13 14:14:11,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 14:14:11,300 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-13 14:14:11,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:14:11,302 INFO L225 Difference]: With dead ends: 305 [2024-11-13 14:14:11,302 INFO L226 Difference]: Without dead ends: 266 [2024-11-13 14:14:11,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=883, Invalid=3809, Unknown=0, NotChecked=0, Total=4692 [2024-11-13 14:14:11,303 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 56 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:14:11,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 65 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:14:11,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-13 14:14:11,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 232. [2024-11-13 14:14:11,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.29004329004329) internal successors, (298), 231 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:14:11,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 298 transitions. [2024-11-13 14:14:11,474 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 298 transitions. Word has length 48 [2024-11-13 14:14:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:14:11,474 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 298 transitions. [2024-11-13 14:14:11,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.106382978723404) internal successors, (99), 47 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:14:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 298 transitions. [2024-11-13 14:14:11,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 14:14:11,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:14:11,475 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:14:11,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 14:14:11,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 14:14:11,676 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:14:11,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:14:11,676 INFO L85 PathProgramCache]: Analyzing trace with hash 556152967, now seen corresponding path program 7 times [2024-11-13 14:14:11,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:14:11,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724406337] [2024-11-13 14:14:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:14:11,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:14:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 14:14:12,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:14:12,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724406337] [2024-11-13 14:14:12,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724406337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:14:12,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796771837] [2024-11-13 14:14:12,000 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:14:12,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:14:12,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:14:12,002 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:14:12,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 14:14:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:12,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:14:12,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:14:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 92 proven. 28 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 14:14:12,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:14:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 92 proven. 28 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 14:14:13,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796771837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:14:13,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:14:13,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 19] total 42 [2024-11-13 14:14:13,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484899392] [2024-11-13 14:14:13,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:14:13,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 14:14:13,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:14:13,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 14:14:13,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1432, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 14:14:13,119 INFO L87 Difference]: Start difference. First operand 232 states and 298 transitions. Second operand has 42 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 42 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:14:14,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:14:14,129 INFO L93 Difference]: Finished difference Result 262 states and 331 transitions. [2024-11-13 14:14:14,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 14:14:14,130 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 42 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-13 14:14:14,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:14:14,131 INFO L225 Difference]: With dead ends: 262 [2024-11-13 14:14:14,131 INFO L226 Difference]: Without dead ends: 126 [2024-11-13 14:14:14,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 66 SyntacticMatches, 9 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=718, Invalid=3704, Unknown=0, NotChecked=0, Total=4422 [2024-11-13 14:14:14,132 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 217 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:14:14,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 53 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:14:14,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-13 14:14:14,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 55. [2024-11-13 14:14:14,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 54 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:14:14,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2024-11-13 14:14:14,177 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 50 [2024-11-13 14:14:14,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:14:14,177 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2024-11-13 14:14:14,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 42 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:14:14,178 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2024-11-13 14:14:14,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 14:14:14,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:14:14,178 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:14:14,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 14:14:14,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 14:14:14,379 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:14:14,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:14:14,379 INFO L85 PathProgramCache]: Analyzing trace with hash -223311004, now seen corresponding path program 18 times [2024-11-13 14:14:14,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:14:14,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650823750] [2024-11-13 14:14:14,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:14:14,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:14:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 14:14:14,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:14:14,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650823750] [2024-11-13 14:14:14,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650823750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:14:14,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350282296] [2024-11-13 14:14:14,828 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:14:14,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:14:14,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:14:14,831 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:14:14,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 14:14:15,503 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-13 14:14:15,503 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:14:15,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:14:15,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:14:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 70 proven. 50 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:14:15,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:14:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 70 proven. 50 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:14:15,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350282296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:14:15,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:14:15,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-13 14:14:15,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095731802] [2024-11-13 14:14:15,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:14:15,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 14:14:15,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:14:15,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 14:14:15,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2024-11-13 14:14:15,996 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 29 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:14:16,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:14:16,433 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2024-11-13 14:14:16,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 14:14:16,434 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 29 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-13 14:14:16,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:14:16,435 INFO L225 Difference]: With dead ends: 73 [2024-11-13 14:14:16,435 INFO L226 Difference]: Without dead ends: 69 [2024-11-13 14:14:16,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 79 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 14:14:16,435 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 71 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:14:16,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 44 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:14:16,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-13 14:14:16,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 56. [2024-11-13 14:14:16,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:14:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2024-11-13 14:14:16,484 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 52 [2024-11-13 14:14:16,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:14:16,484 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2024-11-13 14:14:16,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 29 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:14:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2024-11-13 14:14:16,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 14:14:16,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:14:16,485 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:14:16,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 14:14:16,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 14:14:16,685 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:14:16,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:14:16,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1668958881, now seen corresponding path program 19 times [2024-11-13 14:14:16,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:14:16,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275802874] [2024-11-13 14:14:16,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:14:16,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:14:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:14:23,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:14:23,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275802874] [2024-11-13 14:14:23,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275802874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:14:23,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806001518] [2024-11-13 14:14:23,331 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:14:23,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:14:23,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:14:23,333 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:14:23,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 14:14:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:23,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-13 14:14:23,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:14:23,562 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 [2024-11-13 14:14:23,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:14:24,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:14:24,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-13 14:14:24,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:14:24,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-13 14:14:24,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:14:24,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2024-11-13 14:14:25,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:14:25,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 51 [2024-11-13 14:14:25,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:14:25,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 61 [2024-11-13 14:14:26,266 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:14:26,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 71 [2024-11-13 14:14:26,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:14:26,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 81 [2024-11-13 14:14:27,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:14:27,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:14:27,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:14:27,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:14:27,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:14:27,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:14:28,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:14:28,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:14:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:14:28,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:14:36,582 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 672 treesize of output 640 [2024-11-13 14:14:39,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:14:39,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 1075517881627353164 treesize of output -1086209939510484403 [2024-11-13 14:14:57,307 WARN L286 SmtUtils]: Spent 18.07s on a formula simplification. DAG size of input: 10485 DAG size of output: 248 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:15:02,453 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:15:02,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806001518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:15:02,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:15:02,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 126 [2024-11-13 14:15:02,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539800985] [2024-11-13 14:15:02,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:15:02,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2024-11-13 14:15:02,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:15:02,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2024-11-13 14:15:02,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1473, Invalid=14277, Unknown=0, NotChecked=0, Total=15750 [2024-11-13 14:15:02,457 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 126 states, 126 states have (on average 1.1031746031746033) internal successors, (139), 126 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:15:16,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:15:16,539 INFO L93 Difference]: Finished difference Result 184 states and 217 transitions. [2024-11-13 14:15:16,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-13 14:15:16,540 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 126 states have (on average 1.1031746031746033) internal successors, (139), 126 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-13 14:15:16,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:15:16,540 INFO L225 Difference]: With dead ends: 184 [2024-11-13 14:15:16,541 INFO L226 Difference]: Without dead ends: 147 [2024-11-13 14:15:16,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9662 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=2765, Invalid=28035, Unknown=0, NotChecked=0, Total=30800 [2024-11-13 14:15:16,542 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 176 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 3790 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 3987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 3790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:15:16,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 251 Invalid, 3987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 3790 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-13 14:15:16,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-13 14:15:16,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 94. [2024-11-13 14:15:16,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.1505376344086022) internal successors, (107), 93 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:15:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2024-11-13 14:15:16,646 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 53 [2024-11-13 14:15:16,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:15:16,646 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2024-11-13 14:15:16,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 126 states have (on average 1.1031746031746033) internal successors, (139), 126 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:15:16,646 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2024-11-13 14:15:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 14:15:16,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:16,647 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:16,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 14:15:16,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 14:15:16,847 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:15:16,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:16,848 INFO L85 PathProgramCache]: Analyzing trace with hash 647890527, now seen corresponding path program 8 times [2024-11-13 14:15:16,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:15:16,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195900641] [2024-11-13 14:15:16,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:16,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:15:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 15 proven. 113 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:15:17,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:15:17,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195900641] [2024-11-13 14:15:17,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195900641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:15:17,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416845994] [2024-11-13 14:15:17,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:15:17,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:17,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:15:17,896 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:15:17,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 14:15:18,098 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:15:18,098 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:15:18,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-13 14:15:18,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:15:18,366 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 [2024-11-13 14:15:18,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:15:18,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-13 14:15:18,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:15:18,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-13 14:15:18,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:15:18,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-13 14:15:18,665 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:15:18,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-13 14:15:18,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:15:18,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-13 14:15:18,789 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:15:18,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-13 14:15:18,856 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:15:18,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2024-11-13 14:15:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 15 proven. 113 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:15:18,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:15:19,064 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 16 treesize of output 14 [2024-11-13 14:15:19,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2024-11-13 14:15:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 15 proven. 113 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:15:19,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416845994] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:15:19,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:15:19,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 39 [2024-11-13 14:15:19,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778559958] [2024-11-13 14:15:19,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:15:19,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 14:15:19,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:15:19,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 14:15:19,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1347, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 14:15:19,083 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand has 39 states, 39 states have (on average 2.1538461538461537) internal successors, (84), 39 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:15:19,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:15:19,965 INFO L93 Difference]: Finished difference Result 137 states and 157 transitions. [2024-11-13 14:15:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 14:15:19,966 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1538461538461537) internal successors, (84), 39 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-13 14:15:19,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:15:19,967 INFO L225 Difference]: With dead ends: 137 [2024-11-13 14:15:19,967 INFO L226 Difference]: Without dead ends: 113 [2024-11-13 14:15:19,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=135, Invalid=1347, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 14:15:19,968 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:15:19,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 175 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:15:19,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-13 14:15:20,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2024-11-13 14:15:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.1274509803921569) internal successors, (115), 102 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:15:20,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2024-11-13 14:15:20,064 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 53 [2024-11-13 14:15:20,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:15:20,064 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2024-11-13 14:15:20,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.1538461538461537) internal successors, (84), 39 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:15:20,064 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2024-11-13 14:15:20,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 14:15:20,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:20,065 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:20,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 14:15:20,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:20,265 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:15:20,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:20,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1887813599, now seen corresponding path program 9 times [2024-11-13 14:15:20,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:15:20,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256382452] [2024-11-13 14:15:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:20,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:15:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 21 proven. 107 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:15:21,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:15:21,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256382452] [2024-11-13 14:15:21,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256382452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:15:21,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843318371] [2024-11-13 14:15:21,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:15:21,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:21,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:15:21,111 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:15:21,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 14:15:21,834 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-13 14:15:21,834 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:15:21,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-13 14:15:21,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:15:22,083 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 [2024-11-13 14:15:22,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 11 [2024-11-13 14:15:22,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 11 [2024-11-13 14:15:22,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:15:22,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:15:22,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2024-11-13 14:15:22,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:15:22,360 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:15:22,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2024-11-13 14:15:22,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:15:22,422 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:15:22,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2024-11-13 14:15:22,470 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2024-11-13 14:15:22,471 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 29 treesize of output 34 [2024-11-13 14:15:22,621 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2024-11-13 14:15:22,621 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 41 treesize of output 42 [2024-11-13 14:15:22,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:15:22,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23 [2024-11-13 14:15:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-13 14:15:22,978 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:18:36,802 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_747| Int)) (or (= (select (let ((.cse0 (let ((.cse2 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse3 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse2 .cse3 (+ 2 (select .cse2 .cse3))))) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_747| 4)))) (store .cse0 .cse1 (+ 2 (select .cse0 .cse1)))) (+ (* c_~N~0 4) (- 12) |c_ULTIMATE.start_main_~a~0#1.offset|)) 1) (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) |v_ULTIMATE.start_main_~i~0#1_747|))) is different from false [2024-11-13 14:18:40,874 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_749| Int)) (or (< 0 |v_ULTIMATE.start_main_~i~0#1_749|) (forall ((|v_ULTIMATE.start_main_~i~0#1_747| Int)) (or (< (+ 2 |v_ULTIMATE.start_main_~i~0#1_749|) |v_ULTIMATE.start_main_~i~0#1_747|) (= (select (let ((.cse0 (let ((.cse2 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse3 (+ (* |v_ULTIMATE.start_main_~i~0#1_749| 4) |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse2 .cse3 (+ 2 (select .cse2 .cse3))))) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_747| 4)))) (store .cse0 .cse1 (+ (select .cse0 .cse1) 2))) (+ (* c_~N~0 4) (- 12) |c_ULTIMATE.start_main_~a~0#1.offset|)) 1))))) is different from false [2024-11-13 14:20:07,099 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 154 treesize of output 146 [2024-11-13 14:20:07,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:20:07,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 569776 treesize of output 544392 [2024-11-13 14:20:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 19 proven. 93 refuted. 9 times theorem prover too weak. 28 trivial. 15 not checked. [2024-11-13 14:20:19,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843318371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:20:19,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:20:19,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 27] total 64 [2024-11-13 14:20:19,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539184500] [2024-11-13 14:20:19,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:20:19,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-13 14:20:19,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:20:19,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-13 14:20:19,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=3236, Unknown=53, NotChecked=242, Total=4032 [2024-11-13 14:20:19,573 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand has 64 states, 64 states have (on average 1.796875) internal successors, (115), 64 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:20:44,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:44,777 INFO L93 Difference]: Finished difference Result 159 states and 180 transitions. [2024-11-13 14:20:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-13 14:20:44,778 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.796875) internal successors, (115), 64 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-13 14:20:44,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:44,779 INFO L225 Difference]: With dead ends: 159 [2024-11-13 14:20:44,779 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 14:20:44,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 62 SyntacticMatches, 10 SemanticMatches, 105 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 3358 ImplicationChecksByTransitivity, 318.9s TimeCoverageRelationStatistics Valid=1664, Invalid=9209, Unknown=55, NotChecked=414, Total=11342 [2024-11-13 14:20:44,783 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 142 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:44,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 84 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1109 Invalid, 0 Unknown, 179 Unchecked, 3.3s Time] [2024-11-13 14:20:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 14:20:44,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2024-11-13 14:20:44,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.141025641025641) internal successors, (89), 78 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:20:44,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2024-11-13 14:20:44,896 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 53 [2024-11-13 14:20:44,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:44,896 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2024-11-13 14:20:44,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.796875) internal successors, (115), 64 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:20:44,896 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2024-11-13 14:20:44,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 14:20:44,897 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:44,897 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:44,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 14:20:45,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:45,098 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:20:45,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:45,098 INFO L85 PathProgramCache]: Analyzing trace with hash -742042182, now seen corresponding path program 20 times [2024-11-13 14:20:45,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:20:45,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701949430] [2024-11-13 14:20:45,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:45,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:20:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 28 proven. 109 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 14:20:45,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:20:45,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701949430] [2024-11-13 14:20:45,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701949430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:20:45,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318748945] [2024-11-13 14:20:45,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:20:45,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:45,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:45,856 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:45,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 14:20:46,061 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:20:46,061 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:20:46,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:20:46,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 36 proven. 101 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 14:20:46,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:20:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 36 proven. 101 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 14:20:47,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318748945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:20:47,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:20:47,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-13 14:20:47,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942344697] [2024-11-13 14:20:47,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:20:47,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 14:20:47,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:20:47,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 14:20:47,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2024-11-13 14:20:47,309 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand has 32 states, 32 states have (on average 2.46875) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:20:48,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:48,375 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2024-11-13 14:20:48,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 14:20:48,375 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.46875) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-13 14:20:48,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:48,376 INFO L225 Difference]: With dead ends: 103 [2024-11-13 14:20:48,376 INFO L226 Difference]: Without dead ends: 88 [2024-11-13 14:20:48,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 81 SyntacticMatches, 18 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=413, Invalid=1309, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 14:20:48,377 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 71 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:48,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 39 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:20:48,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-13 14:20:48,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2024-11-13 14:20:48,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 69 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:20:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2024-11-13 14:20:48,467 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 55 [2024-11-13 14:20:48,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:48,467 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2024-11-13 14:20:48,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.46875) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:20:48,467 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2024-11-13 14:20:48,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-13 14:20:48,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:48,468 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:48,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 14:20:48,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:48,668 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:20:48,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:48,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1723190880, now seen corresponding path program 21 times [2024-11-13 14:20:48,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:20:48,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999578726] [2024-11-13 14:20:48,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:48,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:20:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:20:59,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:20:59,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999578726] [2024-11-13 14:20:59,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999578726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:20:59,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863138783] [2024-11-13 14:20:59,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:20:59,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:59,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:59,696 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:59,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61b561e9-dbc3-48fd-9d82-e49a9948130e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 14:21:00,478 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-13 14:21:00,478 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:21:00,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 132 conjuncts are in the unsatisfiable core [2024-11-13 14:21:00,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:21:00,508 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 [2024-11-13 14:21:00,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:21:01,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:21:01,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2024-11-13 14:21:02,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:21:02,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2024-11-13 14:21:02,721 INFO L349 Elim1Store]: treesize reduction 60, result has 36.2 percent of original size [2024-11-13 14:21:02,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 55 [2024-11-13 14:21:03,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:03,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:03,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:03,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:03,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:03,602 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-13 14:21:03,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 61 [2024-11-13 14:21:04,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:04,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:04,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:04,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:04,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:04,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:04,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:04,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:04,986 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-13 14:21:04,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 66 treesize of output 75 [2024-11-13 14:21:05,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:05,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:05,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:06,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:06,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:06,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:06,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:06,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:06,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:06,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:06,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:06,044 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-13 14:21:06,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 77 treesize of output 89 [2024-11-13 14:21:07,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:07,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:07,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:07,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:07,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:07,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:07,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:07,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:07,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:07,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:07,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:07,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:07,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:07,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:07,351 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-13 14:21:07,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 27 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 88 treesize of output 103 [2024-11-13 14:21:08,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:08,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:09,076 INFO L349 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2024-11-13 14:21:09,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 35 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 37 case distinctions, treesize of input 99 treesize of output 117 [2024-11-13 14:21:11,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:21:12,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:21:13,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 19 treesize of output 11 [2024-11-13 14:21:13,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 25 treesize of output 17 [2024-11-13 14:21:14,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 35 treesize of output 23 [2024-11-13 14:21:14,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 40 treesize of output 28 [2024-11-13 14:21:15,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 45 treesize of output 33 [2024-11-13 14:21:16,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 50 treesize of output 38 [2024-11-13 14:21:16,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 55 treesize of output 43 [2024-11-13 14:21:16,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:16,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:16,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:16,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:21:17,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 84 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 126 treesize of output 210 [2024-11-13 14:21:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 52 proven. 134 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 14:21:18,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:21:33,939 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 333 treesize of output 309 [2024-11-13 14:21:34,216 INFO L349 Elim1Store]: treesize reduction 168, result has 24.7 percent of original size [2024-11-13 14:21:34,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 10471 treesize of output 9841 [2024-11-13 14:21:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 14:21:35,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863138783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:21:35,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:21:35,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 45, 43] total 132 [2024-11-13 14:21:35,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25361938] [2024-11-13 14:21:35,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:21:35,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2024-11-13 14:21:35,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:21:35,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2024-11-13 14:21:35,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2030, Invalid=15262, Unknown=0, NotChecked=0, Total=17292 [2024-11-13 14:21:35,358 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 132 states, 132 states have (on average 1.106060606060606) internal successors, (146), 132 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)