./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-73.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-73.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3217b1cd2b9383f0f9bac33b6f497ef2adc5098c2b6d1b194e687fe0da534024 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:07:32,038 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:07:32,146 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:07:32,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:07:32,153 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:07:32,191 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:07:32,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:07:32,193 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:07:32,194 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:07:32,194 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:07:32,195 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:07:32,195 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:07:32,196 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:07:32,196 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:07:32,196 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:07:32,196 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:07:32,197 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:07:32,197 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:07:32,197 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:07:32,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:07:32,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:07:32,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:07:32,198 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:07:32,198 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:07:32,198 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:07:32,198 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:07:32,198 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:07:32,198 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:07:32,199 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:07:32,199 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:07:32,199 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:07:32,199 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:07:32,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:07:32,200 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:07:32,200 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:07:32,200 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:07:32,201 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:07:32,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:07:32,201 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:07:32,201 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:07:32,201 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:07:32,201 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:07:32,201 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:07:32,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:07:32,202 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:07:32,202 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:07:32,202 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:07:32,202 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:07:32,202 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_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3217b1cd2b9383f0f9bac33b6f497ef2adc5098c2b6d1b194e687fe0da534024 [2024-11-28 05:07:32,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:07:32,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:07:32,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:07:32,549 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:07:32,549 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:07:32,551 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-73.i [2024-11-28 05:07:35,588 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/data/d1b2f48d1/95fab9e6487042c09629cae25f14a77f/FLAGd4e986cbe [2024-11-28 05:07:35,992 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:07:35,994 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-73.i [2024-11-28 05:07:36,014 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/data/d1b2f48d1/95fab9e6487042c09629cae25f14a77f/FLAGd4e986cbe [2024-11-28 05:07:36,032 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/data/d1b2f48d1/95fab9e6487042c09629cae25f14a77f [2024-11-28 05:07:36,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:07:36,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:07:36,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:07:36,037 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:07:36,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:07:36,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:36,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26d5bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36, skipping insertion in model container [2024-11-28 05:07:36,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:36,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:07:36,303 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_24afb09f-9582-48d0-9d03-cccebf574ba1/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-73.i[916,929] [2024-11-28 05:07:36,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:07:36,588 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:07:36,599 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_24afb09f-9582-48d0-9d03-cccebf574ba1/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-73.i[916,929] [2024-11-28 05:07:36,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:07:36,780 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:07:36,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36 WrapperNode [2024-11-28 05:07:36,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:07:36,783 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:07:36,783 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:07:36,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:07:36,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:36,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:36,974 INFO L138 Inliner]: procedures = 26, calls = 102, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 789 [2024-11-28 05:07:36,975 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:07:36,976 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:07:36,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:07:36,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:07:36,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:36,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:37,012 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:37,121 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 05:07:37,126 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:37,126 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:37,162 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:37,164 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:37,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:37,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:37,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:37,226 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:07:37,227 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:07:37,228 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:07:37,228 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:07:37,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36" (1/1) ... [2024-11-28 05:07:37,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:07:37,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:37,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:07:37,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:07:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:07:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 05:07:37,301 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 05:07:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:07:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:07:37,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:07:37,507 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:07:37,509 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:07:39,406 INFO L? ?]: Removed 94 outVars from TransFormulas that were not future-live. [2024-11-28 05:07:39,407 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:07:39,434 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:07:39,435 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:07:39,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:07:39 BoogieIcfgContainer [2024-11-28 05:07:39,435 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:07:39,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:07:39,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:07:39,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:07:39,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:07:36" (1/3) ... [2024-11-28 05:07:39,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427b941f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:07:39, skipping insertion in model container [2024-11-28 05:07:39,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:07:36" (2/3) ... [2024-11-28 05:07:39,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427b941f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:07:39, skipping insertion in model container [2024-11-28 05:07:39,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:07:39" (3/3) ... [2024-11-28 05:07:39,448 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-73.i [2024-11-28 05:07:39,465 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:07:39,468 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-73.i that has 2 procedures, 314 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 05:07:39,561 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:07:39,578 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;@6d47dda4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:07:39,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:07:39,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 222 states have (on average 1.5045045045045045) internal successors, (334), 223 states have internal predecessors, (334), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-28 05:07:39,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-11-28 05:07:39,629 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:39,631 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:39,632 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:07:39,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:39,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1534762400, now seen corresponding path program 1 times [2024-11-28 05:07:39,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:39,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835071611] [2024-11-28 05:07:39,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:39,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:40,835 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 15488 trivial. 0 not checked. [2024-11-28 05:07:40,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:40,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835071611] [2024-11-28 05:07:40,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835071611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:07:40,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876892459] [2024-11-28 05:07:40,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:40,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:40,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:40,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:40,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:07:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:41,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:07:41,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 15488 trivial. 0 not checked. [2024-11-28 05:07:41,565 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:07:41,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876892459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:41,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:07:41,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 05:07:41,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129760829] [2024-11-28 05:07:41,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:41,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:07:41,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:41,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:07:41,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:07:41,600 INFO L87 Difference]: Start difference. First operand has 314 states, 222 states have (on average 1.5045045045045045) internal successors, (334), 223 states have internal predecessors, (334), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-28 05:07:41,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:41,667 INFO L93 Difference]: Finished difference Result 619 states and 1103 transitions. [2024-11-28 05:07:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:07:41,669 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) Word has length 591 [2024-11-28 05:07:41,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:41,679 INFO L225 Difference]: With dead ends: 619 [2024-11-28 05:07:41,679 INFO L226 Difference]: Without dead ends: 308 [2024-11-28 05:07:41,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:07:41,689 INFO L435 NwaCegarLoop]: 500 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, 500 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 [2024-11-28 05:07:41,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:07:41,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-11-28 05:07:41,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2024-11-28 05:07:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 217 states have (on average 1.4838709677419355) internal successors, (322), 217 states have internal predecessors, (322), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-28 05:07:41,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 500 transitions. [2024-11-28 05:07:41,780 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 500 transitions. Word has length 591 [2024-11-28 05:07:41,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:41,781 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 500 transitions. [2024-11-28 05:07:41,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2024-11-28 05:07:41,782 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 500 transitions. [2024-11-28 05:07:41,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-11-28 05:07:41,797 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:41,797 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:41,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:07:42,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 05:07:42,002 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:07:42,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:42,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1041151398, now seen corresponding path program 1 times [2024-11-28 05:07:42,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:42,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769403214] [2024-11-28 05:07:42,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:42,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:07:43,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:43,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769403214] [2024-11-28 05:07:43,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769403214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:43,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:43,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:07:43,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758704681] [2024-11-28 05:07:43,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:43,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:07:43,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:43,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:07:43,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:07:43,119 INFO L87 Difference]: Start difference. First operand 308 states and 500 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:07:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:43,301 INFO L93 Difference]: Finished difference Result 890 states and 1446 transitions. [2024-11-28 05:07:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:07:43,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 591 [2024-11-28 05:07:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:43,315 INFO L225 Difference]: With dead ends: 890 [2024-11-28 05:07:43,317 INFO L226 Difference]: Without dead ends: 585 [2024-11-28 05:07:43,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:07:43,319 INFO L435 NwaCegarLoop]: 720 mSDtfsCounter, 446 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:07:43,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 1208 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:07:43,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-11-28 05:07:43,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 582. [2024-11-28 05:07:43,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 405 states have (on average 1.4765432098765432) internal successors, (598), 406 states have internal predecessors, (598), 174 states have call successors, (174), 2 states have call predecessors, (174), 2 states have return successors, (174), 173 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-28 05:07:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 946 transitions. [2024-11-28 05:07:43,462 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 946 transitions. Word has length 591 [2024-11-28 05:07:43,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:43,464 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 946 transitions. [2024-11-28 05:07:43,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:07:43,467 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 946 transitions. [2024-11-28 05:07:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-11-28 05:07:43,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:43,482 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:43,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:07:43,483 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:07:43,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:43,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1342773340, now seen corresponding path program 1 times [2024-11-28 05:07:43,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:43,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055662524] [2024-11-28 05:07:43,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:43,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:07:44,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:44,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055662524] [2024-11-28 05:07:44,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055662524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:44,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:44,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:07:44,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24810161] [2024-11-28 05:07:44,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:44,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:07:44,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:44,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:07:44,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:07:44,147 INFO L87 Difference]: Start difference. First operand 582 states and 946 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:07:45,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:45,125 INFO L93 Difference]: Finished difference Result 1724 states and 2806 transitions. [2024-11-28 05:07:45,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:07:45,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 591 [2024-11-28 05:07:45,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:45,149 INFO L225 Difference]: With dead ends: 1724 [2024-11-28 05:07:45,149 INFO L226 Difference]: Without dead ends: 1145 [2024-11-28 05:07:45,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:07:45,156 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 473 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:07:45,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 985 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:07:45,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2024-11-28 05:07:45,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1143. [2024-11-28 05:07:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 790 states have (on average 1.4632911392405064) internal successors, (1156), 792 states have internal predecessors, (1156), 348 states have call successors, (348), 4 states have call predecessors, (348), 4 states have return successors, (348), 346 states have call predecessors, (348), 348 states have call successors, (348) [2024-11-28 05:07:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1852 transitions. [2024-11-28 05:07:45,491 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1852 transitions. Word has length 591 [2024-11-28 05:07:45,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:45,492 INFO L471 AbstractCegarLoop]: Abstraction has 1143 states and 1852 transitions. [2024-11-28 05:07:45,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:07:45,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1852 transitions. [2024-11-28 05:07:45,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-11-28 05:07:45,513 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:45,513 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:45,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:07:45,513 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:07:45,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:45,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1786674014, now seen corresponding path program 1 times [2024-11-28 05:07:45,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:45,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178054798] [2024-11-28 05:07:45,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:45,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:07:48,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:48,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178054798] [2024-11-28 05:07:48,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178054798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:48,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:48,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:07:48,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372907951] [2024-11-28 05:07:48,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:48,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:48,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:48,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:48,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:48,786 INFO L87 Difference]: Start difference. First operand 1143 states and 1852 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:07:49,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:49,573 INFO L93 Difference]: Finished difference Result 1706 states and 2759 transitions. [2024-11-28 05:07:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:07:49,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 591 [2024-11-28 05:07:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:49,601 INFO L225 Difference]: With dead ends: 1706 [2024-11-28 05:07:49,601 INFO L226 Difference]: Without dead ends: 566 [2024-11-28 05:07:49,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:07:49,606 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 529 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:07:49,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 466 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:07:49,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-28 05:07:49,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-28 05:07:49,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 389 states have (on average 1.4395886889460154) internal successors, (560), 390 states have internal predecessors, (560), 174 states have call successors, (174), 2 states have call predecessors, (174), 2 states have return successors, (174), 173 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-28 05:07:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 908 transitions. [2024-11-28 05:07:49,728 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 908 transitions. Word has length 591 [2024-11-28 05:07:49,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:49,730 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 908 transitions. [2024-11-28 05:07:49,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:07:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 908 transitions. [2024-11-28 05:07:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-11-28 05:07:49,747 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:49,748 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:49,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:07:49,748 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:07:49,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:49,749 INFO L85 PathProgramCache]: Analyzing trace with hash -599835492, now seen corresponding path program 1 times [2024-11-28 05:07:49,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:49,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356450798] [2024-11-28 05:07:49,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:49,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:07:53,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:53,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356450798] [2024-11-28 05:07:53,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356450798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:53,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:53,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:07:53,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185241265] [2024-11-28 05:07:53,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:53,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:07:53,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:53,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:07:53,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:07:53,257 INFO L87 Difference]: Start difference. First operand 566 states and 908 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:07:54,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:54,041 INFO L93 Difference]: Finished difference Result 1749 states and 2777 transitions. [2024-11-28 05:07:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:07:54,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 591 [2024-11-28 05:07:54,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:54,052 INFO L225 Difference]: With dead ends: 1749 [2024-11-28 05:07:54,052 INFO L226 Difference]: Without dead ends: 1186 [2024-11-28 05:07:54,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:07:54,071 INFO L435 NwaCegarLoop]: 559 mSDtfsCounter, 911 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:07:54,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 1342 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:07:54,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2024-11-28 05:07:54,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 706. [2024-11-28 05:07:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 527 states have (on average 1.4876660341555976) internal successors, (784), 528 states have internal predecessors, (784), 174 states have call successors, (174), 4 states have call predecessors, (174), 4 states have return successors, (174), 173 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-28 05:07:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1132 transitions. [2024-11-28 05:07:54,184 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1132 transitions. Word has length 591 [2024-11-28 05:07:54,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:54,186 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 1132 transitions. [2024-11-28 05:07:54,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:07:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1132 transitions. [2024-11-28 05:07:54,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-11-28 05:07:54,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:54,192 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:54,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:07:54,193 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:07:54,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:54,194 INFO L85 PathProgramCache]: Analyzing trace with hash -459286882, now seen corresponding path program 1 times [2024-11-28 05:07:54,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:54,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342792400] [2024-11-28 05:07:54,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:54,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:07:56,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:56,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342792400] [2024-11-28 05:07:56,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342792400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:56,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:56,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:07:56,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885361338] [2024-11-28 05:07:56,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:56,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:07:56,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:56,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:07:56,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:07:56,063 INFO L87 Difference]: Start difference. First operand 706 states and 1132 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:07:56,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:56,371 INFO L93 Difference]: Finished difference Result 1409 states and 2261 transitions. [2024-11-28 05:07:56,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:07:56,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 591 [2024-11-28 05:07:56,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:56,379 INFO L225 Difference]: With dead ends: 1409 [2024-11-28 05:07:56,379 INFO L226 Difference]: Without dead ends: 706 [2024-11-28 05:07:56,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:07:56,382 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 269 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:07:56,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 929 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:07:56,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-28 05:07:56,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2024-11-28 05:07:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 527 states have (on average 1.4838709677419355) internal successors, (782), 528 states have internal predecessors, (782), 174 states have call successors, (174), 4 states have call predecessors, (174), 4 states have return successors, (174), 173 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-28 05:07:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1130 transitions. [2024-11-28 05:07:56,470 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1130 transitions. Word has length 591 [2024-11-28 05:07:56,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:56,471 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 1130 transitions. [2024-11-28 05:07:56,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:07:56,472 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1130 transitions. [2024-11-28 05:07:56,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-28 05:07:56,477 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:56,477 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:56,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:07:56,477 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:07:56,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:56,478 INFO L85 PathProgramCache]: Analyzing trace with hash 984560433, now seen corresponding path program 1 times [2024-11-28 05:07:56,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:56,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375656298] [2024-11-28 05:07:56,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:56,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:07:58,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:58,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375656298] [2024-11-28 05:07:58,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375656298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:58,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:58,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:07:58,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687447690] [2024-11-28 05:07:58,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:58,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:07:58,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:58,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:07:58,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:07:58,356 INFO L87 Difference]: Start difference. First operand 706 states and 1130 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:08:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:08:00,111 INFO L93 Difference]: Finished difference Result 2843 states and 4557 transitions. [2024-11-28 05:08:00,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:08:00,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 593 [2024-11-28 05:08:00,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:08:00,128 INFO L225 Difference]: With dead ends: 2843 [2024-11-28 05:08:00,129 INFO L226 Difference]: Without dead ends: 2140 [2024-11-28 05:08:00,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:08:00,134 INFO L435 NwaCegarLoop]: 782 mSDtfsCounter, 789 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:08:00,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 2068 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 05:08:00,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2024-11-28 05:08:00,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1595. [2024-11-28 05:08:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1238 states have (on average 1.5201938610662358) internal successors, (1882), 1240 states have internal predecessors, (1882), 348 states have call successors, (348), 8 states have call predecessors, (348), 8 states have return successors, (348), 346 states have call predecessors, (348), 348 states have call successors, (348) [2024-11-28 05:08:00,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2578 transitions. [2024-11-28 05:08:00,376 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2578 transitions. Word has length 593 [2024-11-28 05:08:00,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:08:00,377 INFO L471 AbstractCegarLoop]: Abstraction has 1595 states and 2578 transitions. [2024-11-28 05:08:00,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:08:00,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2578 transitions. [2024-11-28 05:08:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-28 05:08:00,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:08:00,384 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:00,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:08:00,385 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:08:00,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:00,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1012606629, now seen corresponding path program 1 times [2024-11-28 05:08:00,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:00,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941352190] [2024-11-28 05:08:00,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:00,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:08:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 36 proven. 228 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:08:04,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:04,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941352190] [2024-11-28 05:08:04,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941352190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:08:04,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429119100] [2024-11-28 05:08:04,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:04,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:04,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:08:04,050 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:08:04,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:08:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:04,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 05:08:04,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:08:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7920 proven. 132 refuted. 0 times theorem prover too weak. 7612 trivial. 0 not checked. [2024-11-28 05:08:05,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:08:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:08:06,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429119100] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:08:06,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:08:06,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 13 [2024-11-28 05:08:06,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992887385] [2024-11-28 05:08:06,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:08:06,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:08:06,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:08:06,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:08:06,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:08:06,587 INFO L87 Difference]: Start difference. First operand 1595 states and 2578 transitions. Second operand has 13 states, 12 states have (on average 22.416666666666668) internal successors, (269), 13 states have internal predecessors, (269), 5 states have call successors, (222), 2 states have call predecessors, (222), 4 states have return successors, (223), 4 states have call predecessors, (223), 5 states have call successors, (223) [2024-11-28 05:08:10,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:08:10,121 INFO L93 Difference]: Finished difference Result 4110 states and 6582 transitions. [2024-11-28 05:08:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 05:08:10,122 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 22.416666666666668) internal successors, (269), 13 states have internal predecessors, (269), 5 states have call successors, (222), 2 states have call predecessors, (222), 4 states have return successors, (223), 4 states have call predecessors, (223), 5 states have call successors, (223) Word has length 593 [2024-11-28 05:08:10,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:08:10,141 INFO L225 Difference]: With dead ends: 4110 [2024-11-28 05:08:10,142 INFO L226 Difference]: Without dead ends: 2518 [2024-11-28 05:08:10,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1221 GetRequests, 1182 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=429, Invalid=1131, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 05:08:10,148 INFO L435 NwaCegarLoop]: 334 mSDtfsCounter, 2120 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 1000 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2165 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1000 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:08:10,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2165 Valid, 1896 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1000 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 05:08:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2024-11-28 05:08:10,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2386. [2024-11-28 05:08:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2386 states, 1927 states have (on average 1.5230928905033732) internal successors, (2935), 1929 states have internal predecessors, (2935), 437 states have call successors, (437), 21 states have call predecessors, (437), 21 states have return successors, (437), 435 states have call predecessors, (437), 437 states have call successors, (437) [2024-11-28 05:08:10,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 3809 transitions. [2024-11-28 05:08:10,415 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 3809 transitions. Word has length 593 [2024-11-28 05:08:10,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:08:10,417 INFO L471 AbstractCegarLoop]: Abstraction has 2386 states and 3809 transitions. [2024-11-28 05:08:10,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 22.416666666666668) internal successors, (269), 13 states have internal predecessors, (269), 5 states have call successors, (222), 2 states have call predecessors, (222), 4 states have return successors, (223), 4 states have call predecessors, (223), 5 states have call successors, (223) [2024-11-28 05:08:10,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 3809 transitions. [2024-11-28 05:08:10,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-28 05:08:10,425 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:08:10,425 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:10,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:08:10,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:10,626 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:08:10,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:10,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1154312335, now seen corresponding path program 1 times [2024-11-28 05:08:10,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:10,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001475387] [2024-11-28 05:08:10,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:10,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:08:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:08:12,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:12,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001475387] [2024-11-28 05:08:12,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001475387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:08:12,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:08:12,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:08:12,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132504109] [2024-11-28 05:08:12,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:08:12,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:08:12,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:08:12,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:08:12,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:08:12,917 INFO L87 Difference]: Start difference. First operand 2386 states and 3809 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:08:13,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:08:13,579 INFO L93 Difference]: Finished difference Result 5762 states and 9175 transitions. [2024-11-28 05:08:13,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:08:13,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 594 [2024-11-28 05:08:13,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:08:13,601 INFO L225 Difference]: With dead ends: 5762 [2024-11-28 05:08:13,601 INFO L226 Difference]: Without dead ends: 3810 [2024-11-28 05:08:13,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:08:13,608 INFO L435 NwaCegarLoop]: 704 mSDtfsCounter, 540 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:08:13,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 1442 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:08:13,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2024-11-28 05:08:13,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 2466. [2024-11-28 05:08:13,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2007 states have (on average 1.5022421524663676) internal successors, (3015), 2009 states have internal predecessors, (3015), 437 states have call successors, (437), 21 states have call predecessors, (437), 21 states have return successors, (437), 435 states have call predecessors, (437), 437 states have call successors, (437) [2024-11-28 05:08:13,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3889 transitions. [2024-11-28 05:08:13,877 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3889 transitions. Word has length 594 [2024-11-28 05:08:13,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:08:13,878 INFO L471 AbstractCegarLoop]: Abstraction has 2466 states and 3889 transitions. [2024-11-28 05:08:13,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:08:13,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3889 transitions. [2024-11-28 05:08:13,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-28 05:08:13,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:08:13,886 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:13,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:08:13,886 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:08:13,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:13,887 INFO L85 PathProgramCache]: Analyzing trace with hash 773960367, now seen corresponding path program 1 times [2024-11-28 05:08:13,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:13,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978459168] [2024-11-28 05:08:13,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:13,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:08:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 228 proven. 36 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:08:19,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:19,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978459168] [2024-11-28 05:08:19,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978459168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:08:19,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912649494] [2024-11-28 05:08:19,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:19,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:19,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:08:19,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:08:19,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:08:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:20,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 05:08:20,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:08:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 3888 proven. 36 refuted. 0 times theorem prover too weak. 11740 trivial. 0 not checked. [2024-11-28 05:08:21,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:08:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 228 proven. 36 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:08:22,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912649494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:08:22,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:08:22,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 10] total 20 [2024-11-28 05:08:22,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886991335] [2024-11-28 05:08:22,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:08:22,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 05:08:22,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:08:22,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 05:08:22,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-11-28 05:08:22,820 INFO L87 Difference]: Start difference. First operand 2466 states and 3889 transitions. Second operand has 20 states, 20 states have (on average 12.95) internal successors, (259), 20 states have internal predecessors, (259), 5 states have call successors, (190), 3 states have call predecessors, (190), 6 states have return successors, (191), 5 states have call predecessors, (191), 5 states have call successors, (191) [2024-11-28 05:08:35,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:08:35,494 INFO L93 Difference]: Finished difference Result 20844 states and 32279 transitions. [2024-11-28 05:08:35,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2024-11-28 05:08:35,495 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.95) internal successors, (259), 20 states have internal predecessors, (259), 5 states have call successors, (190), 3 states have call predecessors, (190), 6 states have return successors, (191), 5 states have call predecessors, (191), 5 states have call successors, (191) Word has length 594 [2024-11-28 05:08:35,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:08:35,586 INFO L225 Difference]: With dead ends: 20844 [2024-11-28 05:08:35,586 INFO L226 Difference]: Without dead ends: 18624 [2024-11-28 05:08:35,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1336 GetRequests, 1197 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7666 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2878, Invalid=16582, Unknown=0, NotChecked=0, Total=19460 [2024-11-28 05:08:35,602 INFO L435 NwaCegarLoop]: 483 mSDtfsCounter, 10684 mSDsluCounter, 5241 mSDsCounter, 0 mSdLazyCounter, 3344 mSolverCounterSat, 4328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10981 SdHoareTripleChecker+Valid, 5724 SdHoareTripleChecker+Invalid, 7672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4328 IncrementalHoareTripleChecker+Valid, 3344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:08:35,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10981 Valid, 5724 Invalid, 7672 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4328 Valid, 3344 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-28 05:08:35,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18624 states. [2024-11-28 05:08:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18624 to 6787. [2024-11-28 05:08:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6787 states, 5664 states have (on average 1.4987641242937852) internal successors, (8489), 5673 states have internal predecessors, (8489), 1061 states have call successors, (1061), 61 states have call predecessors, (1061), 61 states have return successors, (1061), 1052 states have call predecessors, (1061), 1061 states have call successors, (1061) [2024-11-28 05:08:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6787 states to 6787 states and 10611 transitions. [2024-11-28 05:08:36,702 INFO L78 Accepts]: Start accepts. Automaton has 6787 states and 10611 transitions. Word has length 594 [2024-11-28 05:08:36,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:08:36,704 INFO L471 AbstractCegarLoop]: Abstraction has 6787 states and 10611 transitions. [2024-11-28 05:08:36,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.95) internal successors, (259), 20 states have internal predecessors, (259), 5 states have call successors, (190), 3 states have call predecessors, (190), 6 states have return successors, (191), 5 states have call predecessors, (191), 5 states have call successors, (191) [2024-11-28 05:08:36,708 INFO L276 IsEmpty]: Start isEmpty. Operand 6787 states and 10611 transitions. [2024-11-28 05:08:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-28 05:08:36,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:08:36,724 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:36,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:08:36,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 05:08:36,925 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:08:36,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:36,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1249700421, now seen corresponding path program 1 times [2024-11-28 05:08:36,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:36,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834433742] [2024-11-28 05:08:36,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:36,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:08:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:08:37,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:37,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834433742] [2024-11-28 05:08:37,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834433742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:08:37,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:08:37,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:08:37,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819607049] [2024-11-28 05:08:37,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:08:37,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:08:37,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:08:37,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:08:37,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:08:37,320 INFO L87 Difference]: Start difference. First operand 6787 states and 10611 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:08:38,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:08:38,087 INFO L93 Difference]: Finished difference Result 17863 states and 27911 transitions. [2024-11-28 05:08:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:08:38,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 594 [2024-11-28 05:08:38,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:08:38,135 INFO L225 Difference]: With dead ends: 17863 [2024-11-28 05:08:38,135 INFO L226 Difference]: Without dead ends: 11798 [2024-11-28 05:08:38,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:08:38,152 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 449 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:08:38,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 916 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:08:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11798 states. [2024-11-28 05:08:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11798 to 7227. [2024-11-28 05:08:39,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7227 states, 6104 states have (on average 1.4841087811271299) internal successors, (9059), 6113 states have internal predecessors, (9059), 1061 states have call successors, (1061), 61 states have call predecessors, (1061), 61 states have return successors, (1061), 1052 states have call predecessors, (1061), 1061 states have call successors, (1061) [2024-11-28 05:08:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7227 states to 7227 states and 11181 transitions. [2024-11-28 05:08:39,186 INFO L78 Accepts]: Start accepts. Automaton has 7227 states and 11181 transitions. Word has length 594 [2024-11-28 05:08:39,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:08:39,187 INFO L471 AbstractCegarLoop]: Abstraction has 7227 states and 11181 transitions. [2024-11-28 05:08:39,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:08:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 7227 states and 11181 transitions. [2024-11-28 05:08:39,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-28 05:08:39,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:08:39,196 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:39,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 05:08:39,197 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:08:39,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:39,197 INFO L85 PathProgramCache]: Analyzing trace with hash -290091017, now seen corresponding path program 1 times [2024-11-28 05:08:39,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:39,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172735456] [2024-11-28 05:08:39,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:39,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:08:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:43,151 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:08:43,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:43,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172735456] [2024-11-28 05:08:43,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172735456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:08:43,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:08:43,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:08:43,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760715365] [2024-11-28 05:08:43,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:08:43,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:08:43,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:08:43,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:08:43,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:08:43,153 INFO L87 Difference]: Start difference. First operand 7227 states and 11181 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:08:44,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:08:44,867 INFO L93 Difference]: Finished difference Result 21145 states and 32611 transitions. [2024-11-28 05:08:44,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:08:44,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 594 [2024-11-28 05:08:44,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:08:44,932 INFO L225 Difference]: With dead ends: 21145 [2024-11-28 05:08:44,932 INFO L226 Difference]: Without dead ends: 17835 [2024-11-28 05:08:44,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:08:44,946 INFO L435 NwaCegarLoop]: 1249 mSDtfsCounter, 1255 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 4166 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:08:44,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 4166 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:08:44,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17835 states. [2024-11-28 05:08:46,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17835 to 12567. [2024-11-28 05:08:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12567 states, 10760 states have (on average 1.495631970260223) internal successors, (16093), 10775 states have internal predecessors, (16093), 1709 states have call successors, (1709), 97 states have call predecessors, (1709), 97 states have return successors, (1709), 1694 states have call predecessors, (1709), 1709 states have call successors, (1709) [2024-11-28 05:08:46,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12567 states to 12567 states and 19511 transitions. [2024-11-28 05:08:46,393 INFO L78 Accepts]: Start accepts. Automaton has 12567 states and 19511 transitions. Word has length 594 [2024-11-28 05:08:46,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:08:46,394 INFO L471 AbstractCegarLoop]: Abstraction has 12567 states and 19511 transitions. [2024-11-28 05:08:46,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:08:46,395 INFO L276 IsEmpty]: Start isEmpty. Operand 12567 states and 19511 transitions. [2024-11-28 05:08:46,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-28 05:08:46,402 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:08:46,403 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:46,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:08:46,403 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:08:46,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:46,404 INFO L85 PathProgramCache]: Analyzing trace with hash -262044821, now seen corresponding path program 1 times [2024-11-28 05:08:46,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:46,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085272785] [2024-11-28 05:08:46,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:46,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:08:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:51,027 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 102 proven. 162 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:08:51,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:51,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085272785] [2024-11-28 05:08:51,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085272785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:08:51,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166608421] [2024-11-28 05:08:51,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:51,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:51,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:08:51,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:08:51,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:08:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:51,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 05:08:51,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:08:53,161 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7500 proven. 162 refuted. 0 times theorem prover too weak. 8002 trivial. 0 not checked. [2024-11-28 05:08:53,161 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:08:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 102 proven. 162 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:08:54,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166608421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:08:54,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:08:54,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-11-28 05:08:54,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480174704] [2024-11-28 05:08:54,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:08:54,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 05:08:54,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:08:54,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 05:08:54,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-28 05:08:54,306 INFO L87 Difference]: Start difference. First operand 12567 states and 19511 transitions. Second operand has 15 states, 15 states have (on average 24.0) internal successors, (360), 15 states have internal predecessors, (360), 5 states have call successors, (232), 3 states have call predecessors, (232), 6 states have return successors, (233), 5 states have call predecessors, (233), 5 states have call successors, (233) [2024-11-28 05:08:57,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:08:57,750 INFO L93 Difference]: Finished difference Result 22022 states and 33970 transitions. [2024-11-28 05:08:57,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 05:08:57,750 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 24.0) internal successors, (360), 15 states have internal predecessors, (360), 5 states have call successors, (232), 3 states have call predecessors, (232), 6 states have return successors, (233), 5 states have call predecessors, (233), 5 states have call successors, (233) Word has length 594 [2024-11-28 05:08:57,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:08:57,793 INFO L225 Difference]: With dead ends: 22022 [2024-11-28 05:08:57,793 INFO L226 Difference]: Without dead ends: 9727 [2024-11-28 05:08:57,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1214 GetRequests, 1182 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=319, Invalid=737, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 05:08:57,815 INFO L435 NwaCegarLoop]: 763 mSDtfsCounter, 967 mSDsluCounter, 2062 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:08:57,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 2825 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 05:08:57,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9727 states. [2024-11-28 05:08:59,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9727 to 8893. [2024-11-28 05:08:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8893 states, 7065 states have (on average 1.4411889596602971) internal successors, (10182), 7080 states have internal predecessors, (10182), 1709 states have call successors, (1709), 118 states have call predecessors, (1709), 118 states have return successors, (1709), 1694 states have call predecessors, (1709), 1709 states have call successors, (1709) [2024-11-28 05:08:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8893 states to 8893 states and 13600 transitions. [2024-11-28 05:08:59,073 INFO L78 Accepts]: Start accepts. Automaton has 8893 states and 13600 transitions. Word has length 594 [2024-11-28 05:08:59,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:08:59,074 INFO L471 AbstractCegarLoop]: Abstraction has 8893 states and 13600 transitions. [2024-11-28 05:08:59,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.0) internal successors, (360), 15 states have internal predecessors, (360), 5 states have call successors, (232), 3 states have call predecessors, (232), 6 states have return successors, (233), 5 states have call predecessors, (233), 5 states have call successors, (233) [2024-11-28 05:08:59,074 INFO L276 IsEmpty]: Start isEmpty. Operand 8893 states and 13600 transitions. [2024-11-28 05:08:59,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2024-11-28 05:08:59,081 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:08:59,081 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:59,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:08:59,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 05:08:59,282 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:08:59,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:59,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1857216473, now seen corresponding path program 1 times [2024-11-28 05:08:59,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:59,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197576014] [2024-11-28 05:08:59,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:59,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:02,874 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 165 proven. 99 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:09:02,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:02,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197576014] [2024-11-28 05:09:02,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197576014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:02,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513993651] [2024-11-28 05:09:02,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:02,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:02,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:02,876 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:02,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:09:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:03,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 05:09:03,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 9606 proven. 195 refuted. 0 times theorem prover too weak. 5863 trivial. 0 not checked. [2024-11-28 05:09:04,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 327 proven. 198 refuted. 0 times theorem prover too weak. 15139 trivial. 0 not checked. [2024-11-28 05:09:05,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513993651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:09:05,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:09:05,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 19 [2024-11-28 05:09:05,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187709928] [2024-11-28 05:09:05,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:05,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 05:09:05,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:05,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 05:09:05,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:09:05,429 INFO L87 Difference]: Start difference. First operand 8893 states and 13600 transitions. Second operand has 19 states, 19 states have (on average 15.894736842105264) internal successors, (302), 19 states have internal predecessors, (302), 6 states have call successors, (232), 3 states have call predecessors, (232), 7 states have return successors, (233), 6 states have call predecessors, (233), 6 states have call successors, (233) [2024-11-28 05:09:09,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-28 05:09:18,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:18,389 INFO L93 Difference]: Finished difference Result 41529 states and 62759 transitions. [2024-11-28 05:09:18,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-28 05:09:18,389 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 15.894736842105264) internal successors, (302), 19 states have internal predecessors, (302), 6 states have call successors, (232), 3 states have call predecessors, (232), 7 states have return successors, (233), 6 states have call predecessors, (233), 6 states have call successors, (233) Word has length 595 [2024-11-28 05:09:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:18,478 INFO L225 Difference]: With dead ends: 41529 [2024-11-28 05:09:18,478 INFO L226 Difference]: Without dead ends: 33702 [2024-11-28 05:09:18,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1295 GetRequests, 1187 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4140 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2340, Invalid=9216, Unknown=0, NotChecked=0, Total=11556 [2024-11-28 05:09:18,502 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 7017 mSDsluCounter, 3365 mSDsCounter, 0 mSdLazyCounter, 3638 mSolverCounterSat, 2176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7120 SdHoareTripleChecker+Valid, 3867 SdHoareTripleChecker+Invalid, 5814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2176 IncrementalHoareTripleChecker+Valid, 3638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:18,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7120 Valid, 3867 Invalid, 5814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2176 Valid, 3638 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-28 05:09:18,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33702 states. [2024-11-28 05:09:20,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33702 to 14294. [2024-11-28 05:09:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14294 states, 12294 states have (on average 1.4616886285993167) internal successors, (17970), 12304 states have internal predecessors, (17970), 1829 states have call successors, (1829), 170 states have call predecessors, (1829), 170 states have return successors, (1829), 1819 states have call predecessors, (1829), 1829 states have call successors, (1829) [2024-11-28 05:09:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14294 states to 14294 states and 21628 transitions. [2024-11-28 05:09:20,313 INFO L78 Accepts]: Start accepts. Automaton has 14294 states and 21628 transitions. Word has length 595 [2024-11-28 05:09:20,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:09:20,314 INFO L471 AbstractCegarLoop]: Abstraction has 14294 states and 21628 transitions. [2024-11-28 05:09:20,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.894736842105264) internal successors, (302), 19 states have internal predecessors, (302), 6 states have call successors, (232), 3 states have call predecessors, (232), 7 states have return successors, (233), 6 states have call predecessors, (233), 6 states have call successors, (233) [2024-11-28 05:09:20,314 INFO L276 IsEmpty]: Start isEmpty. Operand 14294 states and 21628 transitions. [2024-11-28 05:09:20,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2024-11-28 05:09:20,321 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:20,322 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:20,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:09:20,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 05:09:20,526 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:09:20,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:20,527 INFO L85 PathProgramCache]: Analyzing trace with hash 414147577, now seen corresponding path program 1 times [2024-11-28 05:09:20,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:20,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862184559] [2024-11-28 05:09:20,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:20,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:09:21,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:21,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862184559] [2024-11-28 05:09:21,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862184559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:21,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:21,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:09:21,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103347764] [2024-11-28 05:09:21,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:21,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:09:21,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:21,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:09:21,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:09:21,482 INFO L87 Difference]: Start difference. First operand 14294 states and 21628 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:09:23,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:23,673 INFO L93 Difference]: Finished difference Result 33033 states and 49853 transitions. [2024-11-28 05:09:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:09:23,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 595 [2024-11-28 05:09:23,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:23,719 INFO L225 Difference]: With dead ends: 33033 [2024-11-28 05:09:23,720 INFO L226 Difference]: Without dead ends: 17012 [2024-11-28 05:09:23,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:09:23,741 INFO L435 NwaCegarLoop]: 655 mSDtfsCounter, 894 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:23,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 958 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:09:23,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17012 states. [2024-11-28 05:09:25,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17012 to 14026. [2024-11-28 05:09:25,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14026 states, 12026 states have (on average 1.4443705305172128) internal successors, (17370), 12036 states have internal predecessors, (17370), 1829 states have call successors, (1829), 170 states have call predecessors, (1829), 170 states have return successors, (1829), 1819 states have call predecessors, (1829), 1829 states have call successors, (1829) [2024-11-28 05:09:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14026 states to 14026 states and 21028 transitions. [2024-11-28 05:09:25,657 INFO L78 Accepts]: Start accepts. Automaton has 14026 states and 21028 transitions. Word has length 595 [2024-11-28 05:09:25,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:09:25,658 INFO L471 AbstractCegarLoop]: Abstraction has 14026 states and 21028 transitions. [2024-11-28 05:09:25,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:09:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 14026 states and 21028 transitions. [2024-11-28 05:09:25,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2024-11-28 05:09:25,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:25,670 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:25,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:09:25,670 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:09:25,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:25,671 INFO L85 PathProgramCache]: Analyzing trace with hash -145379977, now seen corresponding path program 1 times [2024-11-28 05:09:25,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:25,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547245636] [2024-11-28 05:09:25,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:25,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:09:27,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:27,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547245636] [2024-11-28 05:09:27,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547245636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:27,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:27,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:09:27,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576326006] [2024-11-28 05:09:27,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:27,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:09:27,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:27,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:09:27,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:27,251 INFO L87 Difference]: Start difference. First operand 14026 states and 21028 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:09:31,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:31,335 INFO L93 Difference]: Finished difference Result 40943 states and 61622 transitions. [2024-11-28 05:09:31,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:09:31,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 595 [2024-11-28 05:09:31,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:31,399 INFO L225 Difference]: With dead ends: 40943 [2024-11-28 05:09:31,399 INFO L226 Difference]: Without dead ends: 32750 [2024-11-28 05:09:31,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:09:31,415 INFO L435 NwaCegarLoop]: 808 mSDtfsCounter, 750 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:31,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1607 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:09:31,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32750 states. [2024-11-28 05:09:33,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32750 to 16372. [2024-11-28 05:09:33,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16372 states, 14372 states have (on average 1.4546340105761202) internal successors, (20906), 14382 states have internal predecessors, (20906), 1829 states have call successors, (1829), 170 states have call predecessors, (1829), 170 states have return successors, (1829), 1819 states have call predecessors, (1829), 1829 states have call successors, (1829) [2024-11-28 05:09:33,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16372 states to 16372 states and 24564 transitions. [2024-11-28 05:09:33,545 INFO L78 Accepts]: Start accepts. Automaton has 16372 states and 24564 transitions. Word has length 595 [2024-11-28 05:09:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:09:33,545 INFO L471 AbstractCegarLoop]: Abstraction has 16372 states and 24564 transitions. [2024-11-28 05:09:33,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:09:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 16372 states and 24564 transitions. [2024-11-28 05:09:33,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2024-11-28 05:09:33,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:33,549 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:33,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 05:09:33,550 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:09:33,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:33,550 INFO L85 PathProgramCache]: Analyzing trace with hash 262271371, now seen corresponding path program 1 times [2024-11-28 05:09:33,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:33,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55381052] [2024-11-28 05:09:33,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:33,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:09:34,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:34,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55381052] [2024-11-28 05:09:34,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55381052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:34,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:34,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:09:34,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320435199] [2024-11-28 05:09:34,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:34,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:09:34,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:34,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:09:34,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:09:34,359 INFO L87 Difference]: Start difference. First operand 16372 states and 24564 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:09:38,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:38,604 INFO L93 Difference]: Finished difference Result 39491 states and 59294 transitions. [2024-11-28 05:09:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:09:38,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 595 [2024-11-28 05:09:38,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:38,646 INFO L225 Difference]: With dead ends: 39491 [2024-11-28 05:09:38,646 INFO L226 Difference]: Without dead ends: 23772 [2024-11-28 05:09:38,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:09:38,670 INFO L435 NwaCegarLoop]: 966 mSDtfsCounter, 703 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:38,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1914 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 05:09:38,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23772 states. [2024-11-28 05:09:40,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23772 to 16652. [2024-11-28 05:09:40,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16652 states, 14652 states have (on average 1.4533169533169532) internal successors, (21294), 14662 states have internal predecessors, (21294), 1829 states have call successors, (1829), 170 states have call predecessors, (1829), 170 states have return successors, (1829), 1819 states have call predecessors, (1829), 1829 states have call successors, (1829) [2024-11-28 05:09:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16652 states to 16652 states and 24952 transitions. [2024-11-28 05:09:40,701 INFO L78 Accepts]: Start accepts. Automaton has 16652 states and 24952 transitions. Word has length 595 [2024-11-28 05:09:40,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:09:40,701 INFO L471 AbstractCegarLoop]: Abstraction has 16652 states and 24952 transitions. [2024-11-28 05:09:40,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:09:40,702 INFO L276 IsEmpty]: Start isEmpty. Operand 16652 states and 24952 transitions. [2024-11-28 05:09:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2024-11-28 05:09:40,706 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:40,706 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:40,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 05:09:40,706 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:09:40,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:40,706 INFO L85 PathProgramCache]: Analyzing trace with hash 463268251, now seen corresponding path program 1 times [2024-11-28 05:09:40,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:40,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954148089] [2024-11-28 05:09:40,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:40,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:09:42,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:42,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954148089] [2024-11-28 05:09:42,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954148089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:42,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:42,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:09:42,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043550693] [2024-11-28 05:09:42,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:42,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:09:42,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:42,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:09:42,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:42,149 INFO L87 Difference]: Start difference. First operand 16652 states and 24952 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:09:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:45,574 INFO L93 Difference]: Finished difference Result 34869 states and 52109 transitions. [2024-11-28 05:09:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:09:45,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 596 [2024-11-28 05:09:45,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:45,607 INFO L225 Difference]: With dead ends: 34869 [2024-11-28 05:09:45,607 INFO L226 Difference]: Without dead ends: 19844 [2024-11-28 05:09:45,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:45,620 INFO L435 NwaCegarLoop]: 661 mSDtfsCounter, 757 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:45,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1255 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:09:45,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19844 states. [2024-11-28 05:09:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19844 to 16618. [2024-11-28 05:09:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16618 states, 14618 states have (on average 1.449719523874675) internal successors, (21192), 14628 states have internal predecessors, (21192), 1829 states have call successors, (1829), 170 states have call predecessors, (1829), 170 states have return successors, (1829), 1819 states have call predecessors, (1829), 1829 states have call successors, (1829) [2024-11-28 05:09:47,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16618 states to 16618 states and 24850 transitions. [2024-11-28 05:09:47,109 INFO L78 Accepts]: Start accepts. Automaton has 16618 states and 24850 transitions. Word has length 596 [2024-11-28 05:09:47,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:09:47,109 INFO L471 AbstractCegarLoop]: Abstraction has 16618 states and 24850 transitions. [2024-11-28 05:09:47,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:09:47,110 INFO L276 IsEmpty]: Start isEmpty. Operand 16618 states and 24850 transitions. [2024-11-28 05:09:47,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2024-11-28 05:09:47,113 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:47,114 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:47,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 05:09:47,114 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:09:47,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash -631902805, now seen corresponding path program 1 times [2024-11-28 05:09:47,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:47,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082056380] [2024-11-28 05:09:47,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:47,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:09:48,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:48,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082056380] [2024-11-28 05:09:48,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082056380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:48,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:48,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:09:48,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113487862] [2024-11-28 05:09:48,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:48,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:09:48,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:48,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:09:48,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:09:48,536 INFO L87 Difference]: Start difference. First operand 16618 states and 24850 transitions. Second operand has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:09:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:53,540 INFO L93 Difference]: Finished difference Result 42971 states and 64644 transitions. [2024-11-28 05:09:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:09:53,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 596 [2024-11-28 05:09:53,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:53,585 INFO L225 Difference]: With dead ends: 42971 [2024-11-28 05:09:53,586 INFO L226 Difference]: Without dead ends: 33382 [2024-11-28 05:09:53,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:09:53,599 INFO L435 NwaCegarLoop]: 1002 mSDtfsCounter, 474 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:53,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 2991 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 05:09:53,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33382 states. [2024-11-28 05:09:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33382 to 16788. [2024-11-28 05:09:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16788 states, 14788 states have (on average 1.4537462807681905) internal successors, (21498), 14798 states have internal predecessors, (21498), 1829 states have call successors, (1829), 170 states have call predecessors, (1829), 170 states have return successors, (1829), 1819 states have call predecessors, (1829), 1829 states have call successors, (1829) [2024-11-28 05:09:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16788 states to 16788 states and 25156 transitions. [2024-11-28 05:09:55,356 INFO L78 Accepts]: Start accepts. Automaton has 16788 states and 25156 transitions. Word has length 596 [2024-11-28 05:09:55,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:09:55,357 INFO L471 AbstractCegarLoop]: Abstraction has 16788 states and 25156 transitions. [2024-11-28 05:09:55,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.666666666666668) internal successors, (154), 6 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:09:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 16788 states and 25156 transitions. [2024-11-28 05:09:55,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2024-11-28 05:09:55,364 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:55,364 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:55,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 05:09:55,364 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:09:55,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:55,365 INFO L85 PathProgramCache]: Analyzing trace with hash -686295703, now seen corresponding path program 1 times [2024-11-28 05:09:55,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:55,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177913841] [2024-11-28 05:09:55,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:55,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:55,902 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:09:55,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:55,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177913841] [2024-11-28 05:09:55,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177913841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:55,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:55,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:09:55,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590365292] [2024-11-28 05:09:55,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:55,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:09:55,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:55,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:09:55,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:09:55,905 INFO L87 Difference]: Start difference. First operand 16788 states and 25156 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:09:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:58,888 INFO L93 Difference]: Finished difference Result 33509 states and 50163 transitions. [2024-11-28 05:09:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:09:58,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 596 [2024-11-28 05:09:58,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:58,918 INFO L225 Difference]: With dead ends: 33509 [2024-11-28 05:09:58,918 INFO L226 Difference]: Without dead ends: 18276 [2024-11-28 05:09:58,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:58,931 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 621 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:58,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 2029 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:09:58,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18276 states. [2024-11-28 05:10:00,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18276 to 15199. [2024-11-28 05:10:00,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15199 states, 13199 states have (on average 1.4454882945677703) internal successors, (19079), 13209 states have internal predecessors, (19079), 1829 states have call successors, (1829), 170 states have call predecessors, (1829), 170 states have return successors, (1829), 1819 states have call predecessors, (1829), 1829 states have call successors, (1829) [2024-11-28 05:10:00,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15199 states to 15199 states and 22737 transitions. [2024-11-28 05:10:00,493 INFO L78 Accepts]: Start accepts. Automaton has 15199 states and 22737 transitions. Word has length 596 [2024-11-28 05:10:00,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:00,493 INFO L471 AbstractCegarLoop]: Abstraction has 15199 states and 22737 transitions. [2024-11-28 05:10:00,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:10:00,493 INFO L276 IsEmpty]: Start isEmpty. Operand 15199 states and 22737 transitions. [2024-11-28 05:10:00,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2024-11-28 05:10:00,500 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:00,500 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:00,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 05:10:00,500 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:10:00,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash 540169049, now seen corresponding path program 1 times [2024-11-28 05:10:00,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:00,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204254128] [2024-11-28 05:10:00,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:00,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:00,748 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:10:00,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:00,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204254128] [2024-11-28 05:10:00,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204254128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:00,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:00,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:10:00,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294614074] [2024-11-28 05:10:00,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:00,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:10:00,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:00,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:10:00,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:10:00,750 INFO L87 Difference]: Start difference. First operand 15199 states and 22737 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:10:03,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:03,362 INFO L93 Difference]: Finished difference Result 32993 states and 49185 transitions. [2024-11-28 05:10:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:10:03,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 596 [2024-11-28 05:10:03,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:03,398 INFO L225 Difference]: With dead ends: 32993 [2024-11-28 05:10:03,398 INFO L226 Difference]: Without dead ends: 19187 [2024-11-28 05:10:03,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:10:03,412 INFO L435 NwaCegarLoop]: 477 mSDtfsCounter, 458 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:03,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 928 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:10:03,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19187 states. [2024-11-28 05:10:05,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19187 to 15199. [2024-11-28 05:10:05,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15199 states, 13199 states have (on average 1.4351844836730054) internal successors, (18943), 13209 states have internal predecessors, (18943), 1829 states have call successors, (1829), 170 states have call predecessors, (1829), 170 states have return successors, (1829), 1819 states have call predecessors, (1829), 1829 states have call successors, (1829) [2024-11-28 05:10:05,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15199 states to 15199 states and 22601 transitions. [2024-11-28 05:10:05,237 INFO L78 Accepts]: Start accepts. Automaton has 15199 states and 22601 transitions. Word has length 596 [2024-11-28 05:10:05,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:05,238 INFO L471 AbstractCegarLoop]: Abstraction has 15199 states and 22601 transitions. [2024-11-28 05:10:05,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:10:05,238 INFO L276 IsEmpty]: Start isEmpty. Operand 15199 states and 22601 transitions. [2024-11-28 05:10:05,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2024-11-28 05:10:05,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:05,242 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:05,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 05:10:05,243 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:10:05,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:05,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1718647205, now seen corresponding path program 1 times [2024-11-28 05:10:05,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:05,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566688541] [2024-11-28 05:10:05,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:05,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:10:07,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:07,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566688541] [2024-11-28 05:10:07,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566688541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:07,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:07,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:10:07,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186641753] [2024-11-28 05:10:07,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:07,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:10:07,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:07,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:10:07,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:10:07,239 INFO L87 Difference]: Start difference. First operand 15199 states and 22601 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:10:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:10,168 INFO L93 Difference]: Finished difference Result 34685 states and 51693 transitions. [2024-11-28 05:10:10,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:10:10,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 596 [2024-11-28 05:10:10,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:10,204 INFO L225 Difference]: With dead ends: 34685 [2024-11-28 05:10:10,204 INFO L226 Difference]: Without dead ends: 21055 [2024-11-28 05:10:10,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:10:10,221 INFO L435 NwaCegarLoop]: 564 mSDtfsCounter, 581 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:10,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1615 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:10:10,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21055 states. [2024-11-28 05:10:11,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21055 to 15131. [2024-11-28 05:10:11,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15131 states, 13131 states have (on average 1.437438123524484) internal successors, (18875), 13141 states have internal predecessors, (18875), 1829 states have call successors, (1829), 170 states have call predecessors, (1829), 170 states have return successors, (1829), 1819 states have call predecessors, (1829), 1829 states have call successors, (1829) [2024-11-28 05:10:11,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15131 states to 15131 states and 22533 transitions. [2024-11-28 05:10:11,975 INFO L78 Accepts]: Start accepts. Automaton has 15131 states and 22533 transitions. Word has length 596 [2024-11-28 05:10:11,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:11,975 INFO L471 AbstractCegarLoop]: Abstraction has 15131 states and 22533 transitions. [2024-11-28 05:10:11,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:10:11,975 INFO L276 IsEmpty]: Start isEmpty. Operand 15131 states and 22533 transitions. [2024-11-28 05:10:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2024-11-28 05:10:11,982 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:11,982 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:11,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 05:10:11,983 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:10:11,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:11,983 INFO L85 PathProgramCache]: Analyzing trace with hash 819999995, now seen corresponding path program 1 times [2024-11-28 05:10:11,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:11,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383005156] [2024-11-28 05:10:11,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:11,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:10:13,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:13,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383005156] [2024-11-28 05:10:13,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383005156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:13,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:13,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:10:13,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363252226] [2024-11-28 05:10:13,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:13,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:10:13,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:13,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:10:13,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:10:13,141 INFO L87 Difference]: Start difference. First operand 15131 states and 22533 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:10:17,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:17,342 INFO L93 Difference]: Finished difference Result 33087 states and 49463 transitions. [2024-11-28 05:10:17,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:10:17,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 596 [2024-11-28 05:10:17,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:17,384 INFO L225 Difference]: With dead ends: 33087 [2024-11-28 05:10:17,384 INFO L226 Difference]: Without dead ends: 24531 [2024-11-28 05:10:17,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:10:17,394 INFO L435 NwaCegarLoop]: 660 mSDtfsCounter, 815 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:17,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1252 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:10:17,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24531 states. [2024-11-28 05:10:19,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24531 to 14347. [2024-11-28 05:10:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14347 states, 12347 states have (on average 1.4371912205394022) internal successors, (17745), 12357 states have internal predecessors, (17745), 1829 states have call successors, (1829), 170 states have call predecessors, (1829), 170 states have return successors, (1829), 1819 states have call predecessors, (1829), 1829 states have call successors, (1829) [2024-11-28 05:10:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14347 states to 14347 states and 21403 transitions. [2024-11-28 05:10:19,165 INFO L78 Accepts]: Start accepts. Automaton has 14347 states and 21403 transitions. Word has length 596 [2024-11-28 05:10:19,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:19,165 INFO L471 AbstractCegarLoop]: Abstraction has 14347 states and 21403 transitions. [2024-11-28 05:10:19,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:10:19,165 INFO L276 IsEmpty]: Start isEmpty. Operand 14347 states and 21403 transitions. [2024-11-28 05:10:19,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2024-11-28 05:10:19,169 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:19,170 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:19,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 05:10:19,170 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:10:19,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:19,170 INFO L85 PathProgramCache]: Analyzing trace with hash -953601051, now seen corresponding path program 1 times [2024-11-28 05:10:19,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:10:19,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618921066] [2024-11-28 05:10:19,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:19,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:10:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 48 proven. 216 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:10:23,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:10:23,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618921066] [2024-11-28 05:10:23,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618921066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:10:23,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213559376] [2024-11-28 05:10:23,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:23,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:23,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:23,899 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:23,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:10:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:24,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 05:10:24,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 3888 proven. 36 refuted. 0 times theorem prover too weak. 11740 trivial. 0 not checked. [2024-11-28 05:10:25,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:10:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 228 proven. 36 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:10:26,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213559376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:10:26,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:10:26,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 21 [2024-11-28 05:10:26,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571033516] [2024-11-28 05:10:26,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:10:26,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 05:10:26,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:10:26,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 05:10:26,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:10:26,318 INFO L87 Difference]: Start difference. First operand 14347 states and 21403 transitions. Second operand has 21 states, 20 states have (on average 20.6) internal successors, (412), 21 states have internal predecessors, (412), 8 states have call successors, (267), 3 states have call predecessors, (267), 6 states have return successors, (267), 7 states have call predecessors, (267), 8 states have call successors, (267) [2024-11-28 05:10:56,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:56,162 INFO L93 Difference]: Finished difference Result 105096 states and 157191 transitions. [2024-11-28 05:10:56,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-28 05:10:56,163 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 20.6) internal successors, (412), 21 states have internal predecessors, (412), 8 states have call successors, (267), 3 states have call predecessors, (267), 6 states have return successors, (267), 7 states have call predecessors, (267), 8 states have call successors, (267) Word has length 596 [2024-11-28 05:10:56,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:56,290 INFO L225 Difference]: With dead ends: 105096 [2024-11-28 05:10:56,290 INFO L226 Difference]: Without dead ends: 92425 [2024-11-28 05:10:56,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1298 GetRequests, 1201 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3198 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2098, Invalid=7604, Unknown=0, NotChecked=0, Total=9702 [2024-11-28 05:10:56,317 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 5430 mSDsluCounter, 6224 mSDsCounter, 0 mSdLazyCounter, 6864 mSolverCounterSat, 1798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5430 SdHoareTripleChecker+Valid, 7187 SdHoareTripleChecker+Invalid, 8662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1798 IncrementalHoareTripleChecker+Valid, 6864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:56,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5430 Valid, 7187 Invalid, 8662 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1798 Valid, 6864 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2024-11-28 05:10:56,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92425 states. [2024-11-28 05:11:00,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92425 to 32791. [2024-11-28 05:11:00,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32791 states, 28849 states have (on average 1.441644424416791) internal successors, (41590), 28869 states have internal predecessors, (41590), 3569 states have call successors, (3569), 372 states have call predecessors, (3569), 372 states have return successors, (3569), 3549 states have call predecessors, (3569), 3569 states have call successors, (3569) [2024-11-28 05:11:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32791 states to 32791 states and 48728 transitions. [2024-11-28 05:11:00,734 INFO L78 Accepts]: Start accepts. Automaton has 32791 states and 48728 transitions. Word has length 596 [2024-11-28 05:11:00,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:00,735 INFO L471 AbstractCegarLoop]: Abstraction has 32791 states and 48728 transitions. [2024-11-28 05:11:00,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 20.6) internal successors, (412), 21 states have internal predecessors, (412), 8 states have call successors, (267), 3 states have call predecessors, (267), 6 states have return successors, (267), 7 states have call predecessors, (267), 8 states have call successors, (267) [2024-11-28 05:11:00,735 INFO L276 IsEmpty]: Start isEmpty. Operand 32791 states and 48728 transitions. [2024-11-28 05:11:00,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2024-11-28 05:11:00,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:00,741 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:00,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:11:00,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 05:11:00,942 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:11:00,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:00,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1531570469, now seen corresponding path program 1 times [2024-11-28 05:11:00,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:00,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902247073] [2024-11-28 05:11:00,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:00,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:11:02,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:02,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902247073] [2024-11-28 05:11:02,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902247073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:02,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:02,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:11:02,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853389365] [2024-11-28 05:11:02,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:02,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:11:02,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:02,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:11:02,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:11:02,323 INFO L87 Difference]: Start difference. First operand 32791 states and 48728 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:11:09,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:09,250 INFO L93 Difference]: Finished difference Result 63205 states and 93629 transitions. [2024-11-28 05:11:09,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:11:09,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 597 [2024-11-28 05:11:09,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:09,313 INFO L225 Difference]: With dead ends: 63205 [2024-11-28 05:11:09,313 INFO L226 Difference]: Without dead ends: 31908 [2024-11-28 05:11:09,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:11:09,347 INFO L435 NwaCegarLoop]: 804 mSDtfsCounter, 753 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:09,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 2420 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 05:11:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31908 states. [2024-11-28 05:11:13,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31908 to 28314. [2024-11-28 05:11:13,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28314 states, 24748 states have (on average 1.4361564570874414) internal successors, (35542), 24764 states have internal predecessors, (35542), 3229 states have call successors, (3229), 336 states have call predecessors, (3229), 336 states have return successors, (3229), 3213 states have call predecessors, (3229), 3229 states have call successors, (3229) [2024-11-28 05:11:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28314 states to 28314 states and 42000 transitions. [2024-11-28 05:11:13,618 INFO L78 Accepts]: Start accepts. Automaton has 28314 states and 42000 transitions. Word has length 597 [2024-11-28 05:11:13,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:13,618 INFO L471 AbstractCegarLoop]: Abstraction has 28314 states and 42000 transitions. [2024-11-28 05:11:13,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:11:13,619 INFO L276 IsEmpty]: Start isEmpty. Operand 28314 states and 42000 transitions. [2024-11-28 05:11:13,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2024-11-28 05:11:13,625 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:13,625 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:13,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 05:11:13,625 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:11:13,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:13,626 INFO L85 PathProgramCache]: Analyzing trace with hash -976006761, now seen corresponding path program 1 times [2024-11-28 05:11:13,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:13,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119494151] [2024-11-28 05:11:13,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:13,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:14,407 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:11:14,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:14,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119494151] [2024-11-28 05:11:14,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119494151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:14,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:14,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:11:14,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319194998] [2024-11-28 05:11:14,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:14,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:11:14,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:14,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:11:14,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:11:14,409 INFO L87 Difference]: Start difference. First operand 28314 states and 42000 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:11:16,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:16,423 INFO L93 Difference]: Finished difference Result 28316 states and 42001 transitions. [2024-11-28 05:11:16,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:11:16,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 597 [2024-11-28 05:11:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:16,452 INFO L225 Difference]: With dead ends: 28316 [2024-11-28 05:11:16,452 INFO L226 Difference]: Without dead ends: 11545 [2024-11-28 05:11:16,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:11:16,469 INFO L435 NwaCegarLoop]: 769 mSDtfsCounter, 707 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:16,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 1503 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:11:16,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11545 states. [2024-11-28 05:11:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11545 to 7620. [2024-11-28 05:11:17,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7620 states, 6750 states have (on average 1.442074074074074) internal successors, (9734), 6754 states have internal predecessors, (9734), 785 states have call successors, (785), 84 states have call predecessors, (785), 84 states have return successors, (785), 781 states have call predecessors, (785), 785 states have call successors, (785) [2024-11-28 05:11:17,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7620 states to 7620 states and 11304 transitions. [2024-11-28 05:11:17,362 INFO L78 Accepts]: Start accepts. Automaton has 7620 states and 11304 transitions. Word has length 597 [2024-11-28 05:11:17,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:17,362 INFO L471 AbstractCegarLoop]: Abstraction has 7620 states and 11304 transitions. [2024-11-28 05:11:17,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:11:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 7620 states and 11304 transitions. [2024-11-28 05:11:17,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2024-11-28 05:11:17,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:17,369 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:17,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 05:11:17,369 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:11:17,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:17,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1323345943, now seen corresponding path program 1 times [2024-11-28 05:11:17,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:17,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422084309] [2024-11-28 05:11:17,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:17,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 66 proven. 198 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:11:23,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:23,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422084309] [2024-11-28 05:11:23,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422084309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:23,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93316387] [2024-11-28 05:11:23,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:23,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:23,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:23,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:23,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:11:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:24,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:11:24,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 1278 proven. 9 refuted. 0 times theorem prover too weak. 14377 trivial. 0 not checked. [2024-11-28 05:11:24,171 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 255 proven. 9 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:11:24,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93316387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:11:24,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:11:24,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-28 05:11:24,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33131386] [2024-11-28 05:11:24,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:11:24,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:11:24,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:24,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:11:24,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:11:24,530 INFO L87 Difference]: Start difference. First operand 7620 states and 11304 transitions. Second operand has 9 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 4 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 4 states have call predecessors, (182), 4 states have call successors, (182) [2024-11-28 05:11:26,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:26,801 INFO L93 Difference]: Finished difference Result 10825 states and 16016 transitions. [2024-11-28 05:11:26,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 05:11:26,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 4 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 4 states have call predecessors, (182), 4 states have call successors, (182) Word has length 597 [2024-11-28 05:11:26,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:26,817 INFO L225 Difference]: With dead ends: 10825 [2024-11-28 05:11:26,817 INFO L226 Difference]: Without dead ends: 4564 [2024-11-28 05:11:26,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1213 GetRequests, 1193 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:11:26,824 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 1827 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 1055 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1912 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1055 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:26,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1912 Valid, 1380 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1055 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 05:11:26,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2024-11-28 05:11:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 3304. [2024-11-28 05:11:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3304 states, 2802 states have (on average 1.4193433261955746) internal successors, (3977), 2802 states have internal predecessors, (3977), 445 states have call successors, (445), 56 states have call predecessors, (445), 56 states have return successors, (445), 445 states have call predecessors, (445), 445 states have call successors, (445) [2024-11-28 05:11:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 4867 transitions. [2024-11-28 05:11:27,342 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 4867 transitions. Word has length 597 [2024-11-28 05:11:27,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:27,343 INFO L471 AbstractCegarLoop]: Abstraction has 3304 states and 4867 transitions. [2024-11-28 05:11:27,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.333333333333336) internal successors, (300), 9 states have internal predecessors, (300), 4 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (182), 4 states have call predecessors, (182), 4 states have call successors, (182) [2024-11-28 05:11:27,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 4867 transitions. [2024-11-28 05:11:27,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2024-11-28 05:11:27,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:27,347 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:27,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:11:27,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 05:11:27,547 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:11:27,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:27,548 INFO L85 PathProgramCache]: Analyzing trace with hash 882776391, now seen corresponding path program 1 times [2024-11-28 05:11:27,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:27,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202748196] [2024-11-28 05:11:27,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:27,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:11:27,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:27,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202748196] [2024-11-28 05:11:27,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202748196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:27,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:27,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:11:27,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015692690] [2024-11-28 05:11:27,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:27,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:11:27,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:27,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:11:27,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:11:27,934 INFO L87 Difference]: Start difference. First operand 3304 states and 4867 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:11:28,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:28,996 INFO L93 Difference]: Finished difference Result 6157 states and 9067 transitions. [2024-11-28 05:11:28,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:11:28,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 598 [2024-11-28 05:11:28,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:29,011 INFO L225 Difference]: With dead ends: 6157 [2024-11-28 05:11:29,012 INFO L226 Difference]: Without dead ends: 3097 [2024-11-28 05:11:29,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:11:29,016 INFO L435 NwaCegarLoop]: 458 mSDtfsCounter, 307 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:29,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1820 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:11:29,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2024-11-28 05:11:29,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 3032. [2024-11-28 05:11:29,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 2530 states have (on average 1.407114624505929) internal successors, (3560), 2530 states have internal predecessors, (3560), 445 states have call successors, (445), 56 states have call predecessors, (445), 56 states have return successors, (445), 445 states have call predecessors, (445), 445 states have call successors, (445) [2024-11-28 05:11:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 4450 transitions. [2024-11-28 05:11:29,635 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 4450 transitions. Word has length 598 [2024-11-28 05:11:29,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:29,635 INFO L471 AbstractCegarLoop]: Abstraction has 3032 states and 4450 transitions. [2024-11-28 05:11:29,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:11:29,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 4450 transitions. [2024-11-28 05:11:29,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2024-11-28 05:11:29,638 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:29,638 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:29,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 05:11:29,638 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:11:29,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1389129488, now seen corresponding path program 1 times [2024-11-28 05:11:29,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:29,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633208767] [2024-11-28 05:11:29,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:29,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:11:29,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:29,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633208767] [2024-11-28 05:11:29,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633208767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:29,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:29,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:11:29,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712591744] [2024-11-28 05:11:29,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:29,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:11:29,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:29,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:11:29,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:11:29,818 INFO L87 Difference]: Start difference. First operand 3032 states and 4450 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:11:30,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:30,785 INFO L93 Difference]: Finished difference Result 5524 states and 8102 transitions. [2024-11-28 05:11:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:11:30,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 598 [2024-11-28 05:11:30,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:30,802 INFO L225 Difference]: With dead ends: 5524 [2024-11-28 05:11:30,802 INFO L226 Difference]: Without dead ends: 4439 [2024-11-28 05:11:30,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:11:30,806 INFO L435 NwaCegarLoop]: 748 mSDtfsCounter, 430 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:30,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1194 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:11:30,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4439 states. [2024-11-28 05:11:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4439 to 2966. [2024-11-28 05:11:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2464 states have (on average 1.3965097402597402) internal successors, (3441), 2464 states have internal predecessors, (3441), 445 states have call successors, (445), 56 states have call predecessors, (445), 56 states have return successors, (445), 445 states have call predecessors, (445), 445 states have call successors, (445) [2024-11-28 05:11:31,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 4331 transitions. [2024-11-28 05:11:31,341 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 4331 transitions. Word has length 598 [2024-11-28 05:11:31,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:31,341 INFO L471 AbstractCegarLoop]: Abstraction has 2966 states and 4331 transitions. [2024-11-28 05:11:31,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:11:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 4331 transitions. [2024-11-28 05:11:31,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2024-11-28 05:11:31,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:31,345 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:31,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 05:11:31,345 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:11:31,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:31,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1412638934, now seen corresponding path program 1 times [2024-11-28 05:11:31,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:31,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780454100] [2024-11-28 05:11:31,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:31,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:34,970 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 66 proven. 198 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:11:34,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:34,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780454100] [2024-11-28 05:11:34,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780454100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:34,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142186991] [2024-11-28 05:11:34,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:34,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:34,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:34,973 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:34,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:11:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:35,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 05:11:35,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 3888 proven. 36 refuted. 0 times theorem prover too weak. 11740 trivial. 0 not checked. [2024-11-28 05:11:36,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 228 proven. 36 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:11:36,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142186991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:11:36,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:11:36,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 17 [2024-11-28 05:11:36,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801424250] [2024-11-28 05:11:36,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:11:36,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 05:11:36,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:36,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 05:11:36,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:11:36,870 INFO L87 Difference]: Start difference. First operand 2966 states and 4331 transitions. Second operand has 17 states, 17 states have (on average 19.88235294117647) internal successors, (338), 17 states have internal predecessors, (338), 4 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 4 states have call predecessors, (191), 4 states have call successors, (191) [2024-11-28 05:11:42,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:42,587 INFO L93 Difference]: Finished difference Result 6418 states and 9364 transitions. [2024-11-28 05:11:42,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-28 05:11:42,587 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 19.88235294117647) internal successors, (338), 17 states have internal predecessors, (338), 4 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 4 states have call predecessors, (191), 4 states have call successors, (191) Word has length 598 [2024-11-28 05:11:42,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:42,604 INFO L225 Difference]: With dead ends: 6418 [2024-11-28 05:11:42,605 INFO L226 Difference]: Without dead ends: 3498 [2024-11-28 05:11:42,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1255 GetRequests, 1193 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=921, Invalid=2985, Unknown=0, NotChecked=0, Total=3906 [2024-11-28 05:11:42,610 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 4566 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 1770 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4606 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 3427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1770 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:42,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4606 Valid, 2487 Invalid, 3427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1770 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 05:11:42,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2024-11-28 05:11:43,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 2123. [2024-11-28 05:11:43,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 1621 states have (on average 1.3423812461443554) internal successors, (2176), 1621 states have internal predecessors, (2176), 445 states have call successors, (445), 56 states have call predecessors, (445), 56 states have return successors, (445), 445 states have call predecessors, (445), 445 states have call successors, (445) [2024-11-28 05:11:43,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3066 transitions. [2024-11-28 05:11:43,261 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3066 transitions. Word has length 598 [2024-11-28 05:11:43,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:43,261 INFO L471 AbstractCegarLoop]: Abstraction has 2123 states and 3066 transitions. [2024-11-28 05:11:43,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.88235294117647) internal successors, (338), 17 states have internal predecessors, (338), 4 states have call successors, (190), 2 states have call predecessors, (190), 4 states have return successors, (191), 4 states have call predecessors, (191), 4 states have call successors, (191) [2024-11-28 05:11:43,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3066 transitions. [2024-11-28 05:11:43,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2024-11-28 05:11:43,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:43,265 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:43,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 05:11:43,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:43,465 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:11:43,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:43,466 INFO L85 PathProgramCache]: Analyzing trace with hash 958796634, now seen corresponding path program 1 times [2024-11-28 05:11:43,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:43,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418165591] [2024-11-28 05:11:43,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:43,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:11:45,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:45,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418165591] [2024-11-28 05:11:45,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418165591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:45,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:45,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:11:45,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160070154] [2024-11-28 05:11:45,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:45,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:11:45,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:45,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:11:45,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:11:45,378 INFO L87 Difference]: Start difference. First operand 2123 states and 3066 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:11:47,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:47,588 INFO L93 Difference]: Finished difference Result 5124 states and 7447 transitions. [2024-11-28 05:11:47,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:11:47,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 598 [2024-11-28 05:11:47,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:47,605 INFO L225 Difference]: With dead ends: 5124 [2024-11-28 05:11:47,605 INFO L226 Difference]: Without dead ends: 3108 [2024-11-28 05:11:47,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:11:47,608 INFO L435 NwaCegarLoop]: 680 mSDtfsCounter, 533 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:47,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1851 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 05:11:47,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2024-11-28 05:11:48,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2123. [2024-11-28 05:11:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 1621 states have (on average 1.3423812461443554) internal successors, (2176), 1621 states have internal predecessors, (2176), 445 states have call successors, (445), 56 states have call predecessors, (445), 56 states have return successors, (445), 445 states have call predecessors, (445), 445 states have call successors, (445) [2024-11-28 05:11:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3066 transitions. [2024-11-28 05:11:48,230 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3066 transitions. Word has length 598 [2024-11-28 05:11:48,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:48,230 INFO L471 AbstractCegarLoop]: Abstraction has 2123 states and 3066 transitions. [2024-11-28 05:11:48,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:11:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3066 transitions. [2024-11-28 05:11:48,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2024-11-28 05:11:48,233 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:48,233 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:48,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 05:11:48,233 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:11:48,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:48,234 INFO L85 PathProgramCache]: Analyzing trace with hash 226829208, now seen corresponding path program 1 times [2024-11-28 05:11:48,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:48,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185734600] [2024-11-28 05:11:48,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:48,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2024-11-28 05:11:49,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:49,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185734600] [2024-11-28 05:11:49,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185734600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:49,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:49,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:11:49,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010261957] [2024-11-28 05:11:49,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:49,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:11:49,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:49,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:11:49,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:11:49,232 INFO L87 Difference]: Start difference. First operand 2123 states and 3066 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:11:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:51,022 INFO L93 Difference]: Finished difference Result 4929 states and 7147 transitions. [2024-11-28 05:11:51,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:11:51,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 598 [2024-11-28 05:11:51,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:51,038 INFO L225 Difference]: With dead ends: 4929 [2024-11-28 05:11:51,038 INFO L226 Difference]: Without dead ends: 2901 [2024-11-28 05:11:51,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:11:51,042 INFO L435 NwaCegarLoop]: 700 mSDtfsCounter, 598 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:51,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 1634 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 05:11:51,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2024-11-28 05:11:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1916. [2024-11-28 05:11:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1409 states have (on average 1.3193754435770049) internal successors, (1859), 1409 states have internal predecessors, (1859), 445 states have call successors, (445), 61 states have call predecessors, (445), 61 states have return successors, (445), 445 states have call predecessors, (445), 445 states have call successors, (445) [2024-11-28 05:11:51,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2749 transitions. [2024-11-28 05:11:51,621 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2749 transitions. Word has length 598 [2024-11-28 05:11:51,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:51,621 INFO L471 AbstractCegarLoop]: Abstraction has 1916 states and 2749 transitions. [2024-11-28 05:11:51,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2024-11-28 05:11:51,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2749 transitions. [2024-11-28 05:11:51,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2024-11-28 05:11:51,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:51,625 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:11:51,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 05:11:51,625 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:11:51,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:51,625 INFO L85 PathProgramCache]: Analyzing trace with hash -785202514, now seen corresponding path program 1 times [2024-11-28 05:11:51,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:51,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774835759] [2024-11-28 05:11:51,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:51,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:11:54,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:54,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774835759] [2024-11-28 05:11:54,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774835759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:54,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798903147] [2024-11-28 05:11:54,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:54,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:54,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:54,296 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:54,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:11:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:55,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 05:11:55,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 10422 proven. 360 refuted. 0 times theorem prover too weak. 4882 trivial. 0 not checked. [2024-11-28 05:11:57,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 165 proven. 99 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:11:57,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798903147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:11:57,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:11:57,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 8] total 22 [2024-11-28 05:11:57,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485607865] [2024-11-28 05:11:57,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:11:57,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 05:11:57,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:57,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 05:11:57,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2024-11-28 05:11:57,928 INFO L87 Difference]: Start difference. First operand 1916 states and 2749 transitions. Second operand has 22 states, 22 states have (on average 19.0) internal successors, (418), 21 states have internal predecessors, (418), 7 states have call successors, (235), 4 states have call predecessors, (235), 7 states have return successors, (237), 7 states have call predecessors, (237), 7 states have call successors, (237) [2024-11-28 05:12:12,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:12:12,879 INFO L93 Difference]: Finished difference Result 7952 states and 11072 transitions. [2024-11-28 05:12:12,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2024-11-28 05:12:12,880 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 19.0) internal successors, (418), 21 states have internal predecessors, (418), 7 states have call successors, (235), 4 states have call predecessors, (235), 7 states have return successors, (237), 7 states have call predecessors, (237), 7 states have call successors, (237) Word has length 599 [2024-11-28 05:12:12,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:12:12,902 INFO L225 Difference]: With dead ends: 7952 [2024-11-28 05:12:12,902 INFO L226 Difference]: Without dead ends: 6329 [2024-11-28 05:12:12,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1354 GetRequests, 1195 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10431 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3908, Invalid=21852, Unknown=0, NotChecked=0, Total=25760 [2024-11-28 05:12:12,910 INFO L435 NwaCegarLoop]: 819 mSDtfsCounter, 4006 mSDsluCounter, 4011 mSDsCounter, 0 mSdLazyCounter, 4920 mSolverCounterSat, 2404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4007 SdHoareTripleChecker+Valid, 4830 SdHoareTripleChecker+Invalid, 7324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2404 IncrementalHoareTripleChecker+Valid, 4920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:12:12,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4007 Valid, 4830 Invalid, 7324 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2404 Valid, 4920 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-28 05:12:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6329 states. [2024-11-28 05:12:14,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6329 to 3291. [2024-11-28 05:12:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 2542 states have (on average 1.3135326514555468) internal successors, (3339), 2542 states have internal predecessors, (3339), 623 states have call successors, (623), 125 states have call predecessors, (623), 125 states have return successors, (623), 623 states have call predecessors, (623), 623 states have call successors, (623) [2024-11-28 05:12:14,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 4585 transitions. [2024-11-28 05:12:14,024 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 4585 transitions. Word has length 599 [2024-11-28 05:12:14,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:12:14,024 INFO L471 AbstractCegarLoop]: Abstraction has 3291 states and 4585 transitions. [2024-11-28 05:12:14,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 19.0) internal successors, (418), 21 states have internal predecessors, (418), 7 states have call successors, (235), 4 states have call predecessors, (235), 7 states have return successors, (237), 7 states have call predecessors, (237), 7 states have call successors, (237) [2024-11-28 05:12:14,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 4585 transitions. [2024-11-28 05:12:14,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-11-28 05:12:14,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:12:14,027 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:14,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:12:14,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:14,228 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:12:14,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:14,228 INFO L85 PathProgramCache]: Analyzing trace with hash 573237831, now seen corresponding path program 1 times [2024-11-28 05:12:14,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:14,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735717910] [2024-11-28 05:12:14,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:14,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:16,440 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 231 proven. 33 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:12:16,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:16,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735717910] [2024-11-28 05:12:16,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735717910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:12:16,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844941071] [2024-11-28 05:12:16,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:16,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:16,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:16,442 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:12:16,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:12:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:17,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 05:12:17,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:17,730 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 3643 proven. 60 refuted. 0 times theorem prover too weak. 11961 trivial. 0 not checked. [2024-11-28 05:12:17,731 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:12:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 462 proven. 63 refuted. 0 times theorem prover too weak. 15139 trivial. 0 not checked. [2024-11-28 05:12:18,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844941071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:12:18,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:12:18,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 22 [2024-11-28 05:12:18,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88848063] [2024-11-28 05:12:18,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:12:18,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 05:12:18,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:18,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 05:12:18,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2024-11-28 05:12:18,455 INFO L87 Difference]: Start difference. First operand 3291 states and 4585 transitions. Second operand has 22 states, 20 states have (on average 14.1) internal successors, (282), 20 states have internal predecessors, (282), 7 states have call successors, (112), 3 states have call predecessors, (112), 6 states have return successors, (113), 6 states have call predecessors, (113), 7 states have call successors, (113) [2024-11-28 05:12:22,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:12:22,491 INFO L93 Difference]: Finished difference Result 6424 states and 8905 transitions. [2024-11-28 05:12:22,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 05:12:22,492 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 14.1) internal successors, (282), 20 states have internal predecessors, (282), 7 states have call successors, (112), 3 states have call predecessors, (112), 6 states have return successors, (113), 6 states have call predecessors, (113), 7 states have call successors, (113) Word has length 600 [2024-11-28 05:12:22,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:12:22,508 INFO L225 Difference]: With dead ends: 6424 [2024-11-28 05:12:22,508 INFO L226 Difference]: Without dead ends: 3417 [2024-11-28 05:12:22,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 1191 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=500, Invalid=1306, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 05:12:22,513 INFO L435 NwaCegarLoop]: 554 mSDtfsCounter, 1537 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 2620 mSolverCounterSat, 1143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 3763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1143 IncrementalHoareTripleChecker+Valid, 2620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:12:22,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 2903 Invalid, 3763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1143 Valid, 2620 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 05:12:22,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2024-11-28 05:12:23,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 3347. [2024-11-28 05:12:23,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3347 states, 2584 states have (on average 1.3018575851393188) internal successors, (3364), 2584 states have internal predecessors, (3364), 623 states have call successors, (623), 139 states have call predecessors, (623), 139 states have return successors, (623), 623 states have call predecessors, (623), 623 states have call successors, (623) [2024-11-28 05:12:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 4610 transitions. [2024-11-28 05:12:23,629 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 4610 transitions. Word has length 600 [2024-11-28 05:12:23,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:12:23,630 INFO L471 AbstractCegarLoop]: Abstraction has 3347 states and 4610 transitions. [2024-11-28 05:12:23,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 14.1) internal successors, (282), 20 states have internal predecessors, (282), 7 states have call successors, (112), 3 states have call predecessors, (112), 6 states have return successors, (113), 6 states have call predecessors, (113), 7 states have call successors, (113) [2024-11-28 05:12:23,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 4610 transitions. [2024-11-28 05:12:23,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-11-28 05:12:23,633 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:12:23,633 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:23,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 05:12:23,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-28 05:12:23,833 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:12:23,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:23,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1455348279, now seen corresponding path program 1 times [2024-11-28 05:12:23,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:23,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101596261] [2024-11-28 05:12:23,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:23,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 255 proven. 267 refuted. 0 times theorem prover too weak. 15142 trivial. 0 not checked. [2024-11-28 05:12:26,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:26,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101596261] [2024-11-28 05:12:26,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101596261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:12:26,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761941734] [2024-11-28 05:12:26,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:26,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:26,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:26,895 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:12:26,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:12:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:28,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 05:12:28,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 10657 proven. 621 refuted. 0 times theorem prover too weak. 4386 trivial. 0 not checked. [2024-11-28 05:12:32,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:12:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 300 proven. 483 refuted. 0 times theorem prover too weak. 14881 trivial. 0 not checked. [2024-11-28 05:12:34,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761941734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:12:34,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:12:34,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 21, 19] total 45 [2024-11-28 05:12:34,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327179979] [2024-11-28 05:12:34,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:12:34,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 05:12:34,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:12:34,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 05:12:34,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1656, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 05:12:34,341 INFO L87 Difference]: Start difference. First operand 3347 states and 4610 transitions. Second operand has 45 states, 44 states have (on average 9.204545454545455) internal successors, (405), 43 states have internal predecessors, (405), 11 states have call successors, (214), 5 states have call predecessors, (214), 11 states have return successors, (216), 11 states have call predecessors, (216), 11 states have call successors, (216) [2024-11-28 05:12:44,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:12:44,360 INFO L93 Difference]: Finished difference Result 14612 states and 20197 transitions. [2024-11-28 05:12:44,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-28 05:12:44,360 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 9.204545454545455) internal successors, (405), 43 states have internal predecessors, (405), 11 states have call successors, (214), 5 states have call predecessors, (214), 11 states have return successors, (216), 11 states have call predecessors, (216), 11 states have call successors, (216) Word has length 600 [2024-11-28 05:12:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:12:44,385 INFO L225 Difference]: With dead ends: 14612 [2024-11-28 05:12:44,385 INFO L226 Difference]: Without dead ends: 11614 [2024-11-28 05:12:44,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1279 GetRequests, 1182 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2278 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2249, Invalid=7257, Unknown=0, NotChecked=0, Total=9506 [2024-11-28 05:12:44,393 INFO L435 NwaCegarLoop]: 331 mSDtfsCounter, 5281 mSDsluCounter, 3882 mSDsCounter, 0 mSdLazyCounter, 4145 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5297 SdHoareTripleChecker+Valid, 4213 SdHoareTripleChecker+Invalid, 4880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 4145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:12:44,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5297 Valid, 4213 Invalid, 4880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 4145 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-28 05:12:44,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11614 states. [2024-11-28 05:12:45,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11614 to 5754. [2024-11-28 05:12:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5754 states, 4916 states have (on average 1.3482506102522376) internal successors, (6628), 4922 states have internal predecessors, (6628), 647 states have call successors, (647), 190 states have call predecessors, (647), 190 states have return successors, (647), 641 states have call predecessors, (647), 647 states have call successors, (647) [2024-11-28 05:12:45,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5754 states to 5754 states and 7922 transitions. [2024-11-28 05:12:45,912 INFO L78 Accepts]: Start accepts. Automaton has 5754 states and 7922 transitions. Word has length 600 [2024-11-28 05:12:45,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:12:45,912 INFO L471 AbstractCegarLoop]: Abstraction has 5754 states and 7922 transitions. [2024-11-28 05:12:45,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 9.204545454545455) internal successors, (405), 43 states have internal predecessors, (405), 11 states have call successors, (214), 5 states have call predecessors, (214), 11 states have return successors, (216), 11 states have call predecessors, (216), 11 states have call successors, (216) [2024-11-28 05:12:45,912 INFO L276 IsEmpty]: Start isEmpty. Operand 5754 states and 7922 transitions. [2024-11-28 05:12:45,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-11-28 05:12:45,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:12:45,915 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:12:45,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 05:12:46,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 05:12:46,116 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:12:46,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:46,116 INFO L85 PathProgramCache]: Analyzing trace with hash -272757699, now seen corresponding path program 1 times [2024-11-28 05:12:46,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:12:46,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683685797] [2024-11-28 05:12:46,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:46,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:12:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 66 proven. 198 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2024-11-28 05:12:49,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:12:49,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683685797] [2024-11-28 05:12:49,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683685797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:12:49,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942308188] [2024-11-28 05:12:49,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:49,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:12:49,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:49,620 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:12:49,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:12:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:50,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 05:12:50,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:56,136 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 8703 proven. 986 refuted. 0 times theorem prover too weak. 5975 trivial. 0 not checked. [2024-11-28 05:12:56,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:13:02,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 414 proven. 876 refuted. 0 times theorem prover too weak. 14374 trivial. 0 not checked. [2024-11-28 05:13:02,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942308188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:13:02,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:13:02,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 23, 23] total 53 [2024-11-28 05:13:02,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572901089] [2024-11-28 05:13:02,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:13:02,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-28 05:13:02,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:13:02,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-28 05:13:02,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=2278, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 05:13:02,112 INFO L87 Difference]: Start difference. First operand 5754 states and 7922 transitions. Second operand has 53 states, 50 states have (on average 9.02) internal successors, (451), 47 states have internal predecessors, (451), 15 states have call successors, (267), 7 states have call predecessors, (267), 16 states have return successors, (267), 15 states have call predecessors, (267), 15 states have call successors, (267) [2024-11-28 05:14:12,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:12,108 INFO L93 Difference]: Finished difference Result 26000 states and 35561 transitions. [2024-11-28 05:14:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2024-11-28 05:14:12,109 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 50 states have (on average 9.02) internal successors, (451), 47 states have internal predecessors, (451), 15 states have call successors, (267), 7 states have call predecessors, (267), 16 states have return successors, (267), 15 states have call predecessors, (267), 15 states have call successors, (267) Word has length 600 [2024-11-28 05:14:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:12,149 INFO L225 Difference]: With dead ends: 26000 [2024-11-28 05:14:12,149 INFO L226 Difference]: Without dead ends: 20728 [2024-11-28 05:14:12,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1473 GetRequests, 1171 SyntacticMatches, 0 SemanticMatches, 302 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39825 ImplicationChecksByTransitivity, 40.3s TimeCoverageRelationStatistics Valid=12318, Invalid=79794, Unknown=0, NotChecked=0, Total=92112 [2024-11-28 05:14:12,169 INFO L435 NwaCegarLoop]: 454 mSDtfsCounter, 19980 mSDsluCounter, 6459 mSDsCounter, 0 mSdLazyCounter, 10671 mSolverCounterSat, 7127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19980 SdHoareTripleChecker+Valid, 6913 SdHoareTripleChecker+Invalid, 17798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7127 IncrementalHoareTripleChecker+Valid, 10671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:12,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19980 Valid, 6913 Invalid, 17798 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7127 Valid, 10671 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time] [2024-11-28 05:14:12,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20728 states. [2024-11-28 05:14:14,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20728 to 8942. [2024-11-28 05:14:14,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8942 states, 7791 states have (on average 1.3493774868437942) internal successors, (10513), 7803 states have internal predecessors, (10513), 873 states have call successors, (873), 277 states have call predecessors, (873), 277 states have return successors, (873), 861 states have call predecessors, (873), 873 states have call successors, (873) [2024-11-28 05:14:14,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8942 states to 8942 states and 12259 transitions. [2024-11-28 05:14:14,921 INFO L78 Accepts]: Start accepts. Automaton has 8942 states and 12259 transitions. Word has length 600 [2024-11-28 05:14:14,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:14,922 INFO L471 AbstractCegarLoop]: Abstraction has 8942 states and 12259 transitions. [2024-11-28 05:14:14,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 50 states have (on average 9.02) internal successors, (451), 47 states have internal predecessors, (451), 15 states have call successors, (267), 7 states have call predecessors, (267), 16 states have return successors, (267), 15 states have call predecessors, (267), 15 states have call successors, (267) [2024-11-28 05:14:14,922 INFO L276 IsEmpty]: Start isEmpty. Operand 8942 states and 12259 transitions. [2024-11-28 05:14:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-11-28 05:14:14,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:14,926 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:14:14,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 05:14:15,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 05:14:15,126 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:15,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:15,127 INFO L85 PathProgramCache]: Analyzing trace with hash 425419387, now seen corresponding path program 1 times [2024-11-28 05:14:15,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:15,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851504884] [2024-11-28 05:14:15,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:15,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 321 proven. 699 refuted. 0 times theorem prover too weak. 14644 trivial. 0 not checked. [2024-11-28 05:14:21,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:21,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851504884] [2024-11-28 05:14:21,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851504884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:14:21,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754339239] [2024-11-28 05:14:21,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:21,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:21,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:21,520 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:21,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 05:14:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:24,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 05:14:24,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 9951 proven. 1212 refuted. 0 times theorem prover too weak. 4501 trivial. 0 not checked. [2024-11-28 05:14:28,793 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:14:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 321 proven. 717 refuted. 0 times theorem prover too weak. 14626 trivial. 0 not checked. [2024-11-28 05:14:38,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754339239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:14:38,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:14:38,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 20, 17] total 40 [2024-11-28 05:14:38,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073003202] [2024-11-28 05:14:38,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:14:38,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 05:14:38,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:38,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 05:14:38,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1198, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 05:14:38,806 INFO L87 Difference]: Start difference. First operand 8942 states and 12259 transitions. Second operand has 40 states, 39 states have (on average 10.58974358974359) internal successors, (413), 37 states have internal predecessors, (413), 12 states have call successors, (234), 6 states have call predecessors, (234), 13 states have return successors, (236), 12 states have call predecessors, (236), 12 states have call successors, (236) [2024-11-28 05:14:49,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:49,701 INFO L93 Difference]: Finished difference Result 23762 states and 32724 transitions. [2024-11-28 05:14:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-28 05:14:49,701 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 10.58974358974359) internal successors, (413), 37 states have internal predecessors, (413), 12 states have call successors, (234), 6 states have call predecessors, (234), 13 states have return successors, (236), 12 states have call predecessors, (236), 12 states have call successors, (236) Word has length 600 [2024-11-28 05:14:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:49,735 INFO L225 Difference]: With dead ends: 23762 [2024-11-28 05:14:49,735 INFO L226 Difference]: Without dead ends: 14253 [2024-11-28 05:14:49,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1260 GetRequests, 1184 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1397 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1506, Invalid=4500, Unknown=0, NotChecked=0, Total=6006 [2024-11-28 05:14:49,748 INFO L435 NwaCegarLoop]: 295 mSDtfsCounter, 2005 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 3095 mSolverCounterSat, 653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 3748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 3095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:49,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2006 Valid, 2757 Invalid, 3748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 3095 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 05:14:49,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14253 states. [2024-11-28 05:14:52,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14253 to 8108. [2024-11-28 05:14:52,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8108 states, 6930 states have (on average 1.3271284271284272) internal successors, (9197), 6942 states have internal predecessors, (9197), 873 states have call successors, (873), 304 states have call predecessors, (873), 304 states have return successors, (873), 861 states have call predecessors, (873), 873 states have call successors, (873) [2024-11-28 05:14:52,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8108 states to 8108 states and 10943 transitions. [2024-11-28 05:14:52,651 INFO L78 Accepts]: Start accepts. Automaton has 8108 states and 10943 transitions. Word has length 600 [2024-11-28 05:14:52,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:52,652 INFO L471 AbstractCegarLoop]: Abstraction has 8108 states and 10943 transitions. [2024-11-28 05:14:52,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 10.58974358974359) internal successors, (413), 37 states have internal predecessors, (413), 12 states have call successors, (234), 6 states have call predecessors, (234), 13 states have return successors, (236), 12 states have call predecessors, (236), 12 states have call successors, (236) [2024-11-28 05:14:52,652 INFO L276 IsEmpty]: Start isEmpty. Operand 8108 states and 10943 transitions. [2024-11-28 05:14:52,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-11-28 05:14:52,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:52,656 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:14:52,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 05:14:52,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:52,856 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:52,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:52,857 INFO L85 PathProgramCache]: Analyzing trace with hash 826433855, now seen corresponding path program 1 times [2024-11-28 05:14:52,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:52,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308536575] [2024-11-28 05:14:52,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:52,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:14:55,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485886494] [2024-11-28 05:14:55,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:55,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:55,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:55,251 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:55,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:14:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:57,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 05:14:57,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 3414 proven. 960 refuted. 0 times theorem prover too weak. 11290 trivial. 0 not checked. [2024-11-28 05:15:02,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:15:04,619 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 72 proven. 453 refuted. 0 times theorem prover too weak. 15139 trivial. 0 not checked. [2024-11-28 05:15:04,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:04,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308536575] [2024-11-28 05:15:04,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:15:04,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485886494] [2024-11-28 05:15:04,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485886494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:15:04,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:15:04,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2024-11-28 05:15:04,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461929035] [2024-11-28 05:15:04,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:15:04,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 05:15:04,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:04,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 05:15:04,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:15:04,624 INFO L87 Difference]: Start difference. First operand 8108 states and 10943 transitions. Second operand has 23 states, 22 states have (on average 13.409090909090908) internal successors, (295), 20 states have internal predecessors, (295), 7 states have call successors, (177), 5 states have call predecessors, (177), 9 states have return successors, (178), 7 states have call predecessors, (178), 7 states have call successors, (178) [2024-11-28 05:15:09,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:09,825 INFO L93 Difference]: Finished difference Result 16097 states and 21655 transitions. [2024-11-28 05:15:09,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 05:15:09,826 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 13.409090909090908) internal successors, (295), 20 states have internal predecessors, (295), 7 states have call successors, (177), 5 states have call predecessors, (177), 9 states have return successors, (178), 7 states have call predecessors, (178), 7 states have call successors, (178) Word has length 600 [2024-11-28 05:15:09,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:09,849 INFO L225 Difference]: With dead ends: 16097 [2024-11-28 05:15:09,850 INFO L226 Difference]: Without dead ends: 8338 [2024-11-28 05:15:09,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1176 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=508, Unknown=0, NotChecked=0, Total=756 [2024-11-28 05:15:09,858 INFO L435 NwaCegarLoop]: 330 mSDtfsCounter, 1173 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:09,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 2204 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 05:15:09,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8338 states. [2024-11-28 05:15:12,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8338 to 7874. [2024-11-28 05:15:12,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7874 states, 6721 states have (on average 1.318256211873233) internal successors, (8860), 6729 states have internal predecessors, (8860), 833 states have call successors, (833), 319 states have call predecessors, (833), 319 states have return successors, (833), 825 states have call predecessors, (833), 833 states have call successors, (833) [2024-11-28 05:15:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7874 states to 7874 states and 10526 transitions. [2024-11-28 05:15:12,652 INFO L78 Accepts]: Start accepts. Automaton has 7874 states and 10526 transitions. Word has length 600 [2024-11-28 05:15:12,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:12,653 INFO L471 AbstractCegarLoop]: Abstraction has 7874 states and 10526 transitions. [2024-11-28 05:15:12,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 13.409090909090908) internal successors, (295), 20 states have internal predecessors, (295), 7 states have call successors, (177), 5 states have call predecessors, (177), 9 states have return successors, (178), 7 states have call predecessors, (178), 7 states have call successors, (178) [2024-11-28 05:15:12,653 INFO L276 IsEmpty]: Start isEmpty. Operand 7874 states and 10526 transitions. [2024-11-28 05:15:12,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-11-28 05:15:12,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:12,656 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:12,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 05:15:12,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 05:15:12,856 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:12,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:12,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1713656701, now seen corresponding path program 1 times [2024-11-28 05:15:12,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:12,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686163698] [2024-11-28 05:15:12,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:12,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:15:17,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549351498] [2024-11-28 05:15:17,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:17,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:17,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:17,453 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:17,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 05:15:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:19,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 05:15:19,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 178 proven. 522 refuted. 0 times theorem prover too weak. 14964 trivial. 0 not checked. [2024-11-28 05:15:25,569 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:15:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 15139 trivial. 0 not checked. [2024-11-28 05:15:28,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:28,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686163698] [2024-11-28 05:15:28,258 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:15:28,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549351498] [2024-11-28 05:15:28,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549351498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:15:28,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:15:28,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 21 [2024-11-28 05:15:28,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690249798] [2024-11-28 05:15:28,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:15:28,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 05:15:28,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:28,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 05:15:28,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:15:28,261 INFO L87 Difference]: Start difference. First operand 7874 states and 10526 transitions. Second operand has 21 states, 20 states have (on average 14.55) internal successors, (291), 19 states have internal predecessors, (291), 6 states have call successors, (178), 4 states have call predecessors, (178), 6 states have return successors, (178), 4 states have call predecessors, (178), 6 states have call successors, (178) [2024-11-28 05:15:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:35,326 INFO L93 Difference]: Finished difference Result 19976 states and 26992 transitions. [2024-11-28 05:15:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 05:15:35,326 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 14.55) internal successors, (291), 19 states have internal predecessors, (291), 6 states have call successors, (178), 4 states have call predecessors, (178), 6 states have return successors, (178), 4 states have call predecessors, (178), 6 states have call successors, (178) Word has length 600 [2024-11-28 05:15:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:35,354 INFO L225 Difference]: With dead ends: 19976 [2024-11-28 05:15:35,354 INFO L226 Difference]: Without dead ends: 12399 [2024-11-28 05:15:35,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1219 GetRequests, 1183 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=478, Invalid=928, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 05:15:35,364 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 1467 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 2636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:35,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 3085 Invalid, 2636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 05:15:35,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12399 states. [2024-11-28 05:15:38,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12399 to 7876. [2024-11-28 05:15:38,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7876 states, 6723 states have (on average 1.318161535029005) internal successors, (8862), 6731 states have internal predecessors, (8862), 833 states have call successors, (833), 319 states have call predecessors, (833), 319 states have return successors, (833), 825 states have call predecessors, (833), 833 states have call successors, (833) [2024-11-28 05:15:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7876 states to 7876 states and 10528 transitions. [2024-11-28 05:15:38,253 INFO L78 Accepts]: Start accepts. Automaton has 7876 states and 10528 transitions. Word has length 600 [2024-11-28 05:15:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:38,254 INFO L471 AbstractCegarLoop]: Abstraction has 7876 states and 10528 transitions. [2024-11-28 05:15:38,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 14.55) internal successors, (291), 19 states have internal predecessors, (291), 6 states have call successors, (178), 4 states have call predecessors, (178), 6 states have return successors, (178), 4 states have call predecessors, (178), 6 states have call successors, (178) [2024-11-28 05:15:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 7876 states and 10528 transitions. [2024-11-28 05:15:38,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-11-28 05:15:38,257 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:38,257 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:15:38,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 05:15:38,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 05:15:38,458 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:38,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:38,458 INFO L85 PathProgramCache]: Analyzing trace with hash -704247365, now seen corresponding path program 1 times [2024-11-28 05:15:38,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:38,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582006441] [2024-11-28 05:15:38,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:38,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:15:42,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686804996] [2024-11-28 05:15:42,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:42,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:42,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:42,187 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:42,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 05:15:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:46,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-28 05:15:46,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 8107 proven. 1635 refuted. 0 times theorem prover too weak. 5922 trivial. 0 not checked. [2024-11-28 05:16:02,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:19:52,502 WARN L286 SmtUtils]: Spent 1.58m on a formula simplification. DAG size of input: 100 DAG size of output: 96 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 05:19:52,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:19:52,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582006441] [2024-11-28 05:19:52,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:19:52,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686804996] [2024-11-28 05:19:52,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686804996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:19:52,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:19:52,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2024-11-28 05:19:52,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754291388] [2024-11-28 05:19:52,505 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:19:52,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 05:19:52,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:19:52,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 05:19:52,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=2223, Unknown=4, NotChecked=0, Total=2756 [2024-11-28 05:19:52,507 INFO L87 Difference]: Start difference. First operand 7876 states and 10528 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 35 states have internal predecessors, (194), 9 states have call successors, (89), 9 states have call predecessors, (89), 13 states have return successors, (89), 8 states have call predecessors, (89), 9 states have call successors, (89) [2024-11-28 05:20:15,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:20:15,321 INFO L93 Difference]: Finished difference Result 17767 states and 23725 transitions. [2024-11-28 05:20:15,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-28 05:20:15,322 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 35 states have internal predecessors, (194), 9 states have call successors, (89), 9 states have call predecessors, (89), 13 states have return successors, (89), 8 states have call predecessors, (89), 9 states have call successors, (89) Word has length 600 [2024-11-28 05:20:15,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:20:15,347 INFO L225 Difference]: With dead ends: 17767 [2024-11-28 05:20:15,347 INFO L226 Difference]: Without dead ends: 10680 [2024-11-28 05:20:15,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1043 GetRequests, 938 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3124 ImplicationChecksByTransitivity, 135.1s TimeCoverageRelationStatistics Valid=2292, Invalid=9045, Unknown=5, NotChecked=0, Total=11342 [2024-11-28 05:20:15,356 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 5342 mSDsluCounter, 5254 mSDsCounter, 0 mSdLazyCounter, 5530 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5342 SdHoareTripleChecker+Valid, 5686 SdHoareTripleChecker+Invalid, 5733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 5530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:20:15,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5342 Valid, 5686 Invalid, 5733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 5530 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-28 05:20:15,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10680 states. [2024-11-28 05:20:18,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10680 to 8904. [2024-11-28 05:20:18,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8904 states, 7751 states have (on average 1.3265385111598504) internal successors, (10282), 7759 states have internal predecessors, (10282), 833 states have call successors, (833), 319 states have call predecessors, (833), 319 states have return successors, (833), 825 states have call predecessors, (833), 833 states have call successors, (833) [2024-11-28 05:20:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8904 states to 8904 states and 11948 transitions. [2024-11-28 05:20:18,292 INFO L78 Accepts]: Start accepts. Automaton has 8904 states and 11948 transitions. Word has length 600 [2024-11-28 05:20:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:20:18,293 INFO L471 AbstractCegarLoop]: Abstraction has 8904 states and 11948 transitions. [2024-11-28 05:20:18,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 35 states have internal predecessors, (194), 9 states have call successors, (89), 9 states have call predecessors, (89), 13 states have return successors, (89), 8 states have call predecessors, (89), 9 states have call successors, (89) [2024-11-28 05:20:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 8904 states and 11948 transitions. [2024-11-28 05:20:18,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-11-28 05:20:18,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:20:18,298 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:20:18,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 05:20:18,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 05:20:18,498 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:20:18,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:20:18,499 INFO L85 PathProgramCache]: Analyzing trace with hash -681615111, now seen corresponding path program 1 times [2024-11-28 05:20:18,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:20:18,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904943596] [2024-11-28 05:20:18,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:20:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:20:23,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406718527] [2024-11-28 05:20:23,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:20:23,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:20:23,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:20:23,581 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:20:23,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24afb09f-9582-48d0-9d03-cccebf574ba1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 05:20:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:20:26,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-28 05:20:26,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:20:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 11996 proven. 768 refuted. 0 times theorem prover too weak. 2900 trivial. 0 not checked. [2024-11-28 05:20:36,499 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:20:52,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:20:52,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904943596] [2024-11-28 05:20:52,132 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:20:52,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406718527] [2024-11-28 05:20:52,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406718527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:20:52,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:20:52,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2024-11-28 05:20:52,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341054872] [2024-11-28 05:20:52,133 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:20:52,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 05:20:52,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:20:52,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 05:20:52,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-11-28 05:20:52,135 INFO L87 Difference]: Start difference. First operand 8904 states and 11948 transitions. Second operand has 23 states, 23 states have (on average 8.173913043478262) internal successors, (188), 21 states have internal predecessors, (188), 7 states have call successors, (89), 7 states have call predecessors, (89), 11 states have return successors, (89), 7 states have call predecessors, (89), 7 states have call successors, (89)