./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.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_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/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_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/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_9f02593d-00fd-4348-ad95-1850eebf076a/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 11fbe230916924754384b4d5f209e2f8e8933dc585a70287035d014e0032f60d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:49:27,744 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:49:27,823 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:49:27,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:49:27,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:49:27,853 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:49:27,854 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:49:27,854 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:49:27,854 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:49:27,854 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:49:27,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:49:27,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:49:27,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:49:27,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:49:27,855 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:49:27,855 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:49:27,856 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:49:27,856 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:49:27,856 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:49:27,856 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:49:27,856 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:49:27,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:49:27,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:49:27,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:49:27,856 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:49:27,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:49:27,856 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:49:27,856 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:49:27,857 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:49:27,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:49:27,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:49:27,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:49:27,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:49:27,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:49:27,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:49:27,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:49:27,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:49:27,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:49:27,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:49:27,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:49:27,858 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:49:27,858 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:49:27,858 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:49:27,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:49:27,859 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:49:27,859 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:49:27,859 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:49:27,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:49:27,859 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_9f02593d-00fd-4348-ad95-1850eebf076a/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 -> 11fbe230916924754384b4d5f209e2f8e8933dc585a70287035d014e0032f60d [2024-11-28 04:49:28,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:49:28,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:49:28,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:49:28,153 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:49:28,153 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:49:28,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2024-11-28 04:49:31,155 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/data/a3618e26c/e1acb27c0b614a6c88a64bca1dd256d2/FLAG393459d41 [2024-11-28 04:49:31,528 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:49:31,529 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i [2024-11-28 04:49:31,548 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/data/a3618e26c/e1acb27c0b614a6c88a64bca1dd256d2/FLAG393459d41 [2024-11-28 04:49:31,570 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/data/a3618e26c/e1acb27c0b614a6c88a64bca1dd256d2 [2024-11-28 04:49:31,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:49:31,575 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:49:31,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:49:31,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:49:31,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:49:31,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:31" (1/1) ... [2024-11-28 04:49:31,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@169c3e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:31, skipping insertion in model container [2024-11-28 04:49:31,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:31" (1/1) ... [2024-11-28 04:49:31,630 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:49:31,800 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_9f02593d-00fd-4348-ad95-1850eebf076a/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i[916,929] [2024-11-28 04:49:31,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:49:32,002 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:49:32,012 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_9f02593d-00fd-4348-ad95-1850eebf076a/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-24.i[916,929] [2024-11-28 04:49:32,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:49:32,108 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:49:32,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32 WrapperNode [2024-11-28 04:49:32,109 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:49:32,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:49:32,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:49:32,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:49:32,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32" (1/1) ... [2024-11-28 04:49:32,144 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32" (1/1) ... [2024-11-28 04:49:32,191 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 431 [2024-11-28 04:49:32,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:49:32,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:49:32,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:49:32,192 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:49:32,201 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32" (1/1) ... [2024-11-28 04:49:32,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32" (1/1) ... [2024-11-28 04:49:32,206 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32" (1/1) ... [2024-11-28 04:49:32,230 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 04:49:32,234 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32" (1/1) ... [2024-11-28 04:49:32,234 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32" (1/1) ... [2024-11-28 04:49:32,260 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32" (1/1) ... [2024-11-28 04:49:32,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32" (1/1) ... [2024-11-28 04:49:32,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32" (1/1) ... [2024-11-28 04:49:32,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32" (1/1) ... [2024-11-28 04:49:32,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32" (1/1) ... [2024-11-28 04:49:32,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:49:32,299 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:49:32,300 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:49:32,300 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:49:32,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32" (1/1) ... [2024-11-28 04:49:32,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:49:32,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:32,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:49:32,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:49:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:49:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:49:32,372 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:49:32,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:49:32,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:49:32,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:49:32,521 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:49:32,523 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:49:33,582 INFO L? ?]: Removed 63 outVars from TransFormulas that were not future-live. [2024-11-28 04:49:33,582 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:49:33,601 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:49:33,602 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:49:33,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:33 BoogieIcfgContainer [2024-11-28 04:49:33,602 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:49:33,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:49:33,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:49:33,611 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:49:33,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:49:31" (1/3) ... [2024-11-28 04:49:33,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb2a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:33, skipping insertion in model container [2024-11-28 04:49:33,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:32" (2/3) ... [2024-11-28 04:49:33,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb2a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:33, skipping insertion in model container [2024-11-28 04:49:33,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:33" (3/3) ... [2024-11-28 04:49:33,614 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-24.i [2024-11-28 04:49:33,634 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:49:33,636 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-24.i that has 2 procedures, 182 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:49:33,712 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:49:33,726 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;@cabfd8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:49:33,726 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:49:33,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 136 states have internal predecessors, (205), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-28 04:49:33,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-28 04:49:33,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:33,754 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:33,755 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:33,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:33,761 INFO L85 PathProgramCache]: Analyzing trace with hash 999308583, now seen corresponding path program 1 times [2024-11-28 04:49:33,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:33,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475413011] [2024-11-28 04:49:33,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:33,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-28 04:49:35,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:35,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475413011] [2024-11-28 04:49:35,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475413011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:35,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:35,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:49:35,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724412246] [2024-11-28 04:49:35,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:35,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:49:35,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:35,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:49:35,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:49:35,077 INFO L87 Difference]: Start difference. First operand has 182 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 136 states have internal predecessors, (205), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 04:49:35,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:35,571 INFO L93 Difference]: Finished difference Result 533 states and 958 transitions. [2024-11-28 04:49:35,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:49:35,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 298 [2024-11-28 04:49:35,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:35,585 INFO L225 Difference]: With dead ends: 533 [2024-11-28 04:49:35,585 INFO L226 Difference]: Without dead ends: 354 [2024-11-28 04:49:35,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:49:35,593 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 219 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:35,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 827 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:49:35,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-28 04:49:35,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 263. [2024-11-28 04:49:35,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 172 states have (on average 1.4127906976744187) internal successors, (243), 172 states have internal predecessors, (243), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-28 04:49:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 419 transitions. [2024-11-28 04:49:35,739 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 419 transitions. Word has length 298 [2024-11-28 04:49:35,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:35,743 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 419 transitions. [2024-11-28 04:49:35,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 04:49:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 419 transitions. [2024-11-28 04:49:35,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-28 04:49:35,756 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:35,756 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:35,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:49:35,757 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:35,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:35,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1950101936, now seen corresponding path program 1 times [2024-11-28 04:49:35,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:35,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957421157] [2024-11-28 04:49:35,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:35,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-28 04:49:36,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:36,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957421157] [2024-11-28 04:49:36,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957421157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:36,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:36,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:49:36,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450657588] [2024-11-28 04:49:36,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:36,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:49:36,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:36,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:49:36,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:49:36,159 INFO L87 Difference]: Start difference. First operand 263 states and 419 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 04:49:36,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:36,369 INFO L93 Difference]: Finished difference Result 597 states and 955 transitions. [2024-11-28 04:49:36,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:49:36,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 299 [2024-11-28 04:49:36,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:36,376 INFO L225 Difference]: With dead ends: 597 [2024-11-28 04:49:36,376 INFO L226 Difference]: Without dead ends: 422 [2024-11-28 04:49:36,377 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 04:49:36,378 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 250 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:36,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 676 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:49:36,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-28 04:49:36,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 318. [2024-11-28 04:49:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 227 states have (on average 1.4361233480176212) internal successors, (326), 227 states have internal predecessors, (326), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-28 04:49:36,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 502 transitions. [2024-11-28 04:49:36,462 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 502 transitions. Word has length 299 [2024-11-28 04:49:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:36,463 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 502 transitions. [2024-11-28 04:49:36,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 04:49:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 502 transitions. [2024-11-28 04:49:36,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2024-11-28 04:49:36,472 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:36,472 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:36,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:49:36,473 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:36,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:36,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1250126474, now seen corresponding path program 1 times [2024-11-28 04:49:36,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:36,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489135283] [2024-11-28 04:49:36,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:36,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-28 04:49:36,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:36,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489135283] [2024-11-28 04:49:36,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489135283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:36,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:36,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:49:36,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707435541] [2024-11-28 04:49:36,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:36,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:49:36,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:36,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:49:36,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:49:36,805 INFO L87 Difference]: Start difference. First operand 318 states and 502 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 04:49:36,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:36,979 INFO L93 Difference]: Finished difference Result 652 states and 1028 transitions. [2024-11-28 04:49:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:49:36,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 299 [2024-11-28 04:49:36,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:36,986 INFO L225 Difference]: With dead ends: 652 [2024-11-28 04:49:36,986 INFO L226 Difference]: Without dead ends: 422 [2024-11-28 04:49:36,987 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 04:49:36,988 INFO L435 NwaCegarLoop]: 263 mSDtfsCounter, 248 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:36,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 500 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:49:36,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-28 04:49:37,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 318. [2024-11-28 04:49:37,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 227 states have (on average 1.3920704845814977) internal successors, (316), 227 states have internal predecessors, (316), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-28 04:49:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 492 transitions. [2024-11-28 04:49:37,048 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 492 transitions. Word has length 299 [2024-11-28 04:49:37,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:37,050 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 492 transitions. [2024-11-28 04:49:37,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 04:49:37,050 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 492 transitions. [2024-11-28 04:49:37,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-28 04:49:37,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:37,055 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:37,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:49:37,055 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:37,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:37,057 INFO L85 PathProgramCache]: Analyzing trace with hash 103102257, now seen corresponding path program 1 times [2024-11-28 04:49:37,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:37,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396078544] [2024-11-28 04:49:37,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:37,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-28 04:49:37,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:37,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396078544] [2024-11-28 04:49:37,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396078544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:37,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:37,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:49:37,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250008338] [2024-11-28 04:49:37,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:37,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:49:37,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:37,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:49:37,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:49:37,465 INFO L87 Difference]: Start difference. First operand 318 states and 492 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 04:49:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:37,565 INFO L93 Difference]: Finished difference Result 779 states and 1205 transitions. [2024-11-28 04:49:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:49:37,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2024-11-28 04:49:37,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:37,569 INFO L225 Difference]: With dead ends: 779 [2024-11-28 04:49:37,570 INFO L226 Difference]: Without dead ends: 549 [2024-11-28 04:49:37,570 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 04:49:37,571 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 187 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:37,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 535 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:49:37,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-28 04:49:37,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 545. [2024-11-28 04:49:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 409 states have (on average 1.41320293398533) internal successors, (578), 409 states have internal predecessors, (578), 132 states have call successors, (132), 3 states have call predecessors, (132), 3 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2024-11-28 04:49:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 842 transitions. [2024-11-28 04:49:37,638 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 842 transitions. Word has length 300 [2024-11-28 04:49:37,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:37,639 INFO L471 AbstractCegarLoop]: Abstraction has 545 states and 842 transitions. [2024-11-28 04:49:37,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 04:49:37,639 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 842 transitions. [2024-11-28 04:49:37,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-28 04:49:37,644 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:37,644 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:37,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:49:37,645 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:37,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:37,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2140881041, now seen corresponding path program 1 times [2024-11-28 04:49:37,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:37,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13075561] [2024-11-28 04:49:37,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:37,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-28 04:49:40,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:40,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13075561] [2024-11-28 04:49:40,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13075561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:40,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:40,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:49:40,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090588564] [2024-11-28 04:49:40,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:40,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:49:40,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:40,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:49:40,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:49:40,417 INFO L87 Difference]: Start difference. First operand 545 states and 842 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2024-11-28 04:49:41,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:41,737 INFO L93 Difference]: Finished difference Result 1495 states and 2294 transitions. [2024-11-28 04:49:41,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:49:41,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 300 [2024-11-28 04:49:41,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:41,746 INFO L225 Difference]: With dead ends: 1495 [2024-11-28 04:49:41,746 INFO L226 Difference]: Without dead ends: 1039 [2024-11-28 04:49:41,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:49:41,752 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 825 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:41,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1583 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:49:41,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2024-11-28 04:49:41,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 899. [2024-11-28 04:49:41,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 735 states have (on average 1.4489795918367347) internal successors, (1065), 737 states have internal predecessors, (1065), 158 states have call successors, (158), 5 states have call predecessors, (158), 5 states have return successors, (158), 156 states have call predecessors, (158), 158 states have call successors, (158) [2024-11-28 04:49:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1381 transitions. [2024-11-28 04:49:41,939 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1381 transitions. Word has length 300 [2024-11-28 04:49:41,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:41,940 INFO L471 AbstractCegarLoop]: Abstraction has 899 states and 1381 transitions. [2024-11-28 04:49:41,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2024-11-28 04:49:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1381 transitions. [2024-11-28 04:49:41,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-28 04:49:41,950 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:41,950 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:41,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:49:41,951 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:41,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2078841427, now seen corresponding path program 1 times [2024-11-28 04:49:41,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:41,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836491287] [2024-11-28 04:49:41,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:41,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-28 04:49:43,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:43,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836491287] [2024-11-28 04:49:43,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836491287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:43,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742041806] [2024-11-28 04:49:43,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:43,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:43,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:43,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:43,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:49:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:43,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:49:43,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1629 proven. 90 refuted. 0 times theorem prover too weak. 2065 trivial. 0 not checked. [2024-11-28 04:49:44,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 39 proven. 90 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-28 04:49:45,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742041806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:45,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:45,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 16 [2024-11-28 04:49:45,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090149386] [2024-11-28 04:49:45,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:45,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:49:45,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:45,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:49:45,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:49:45,092 INFO L87 Difference]: Start difference. First operand 899 states and 1381 transitions. Second operand has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) [2024-11-28 04:49:46,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:46,547 INFO L93 Difference]: Finished difference Result 1807 states and 2764 transitions. [2024-11-28 04:49:46,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:49:46,548 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) Word has length 300 [2024-11-28 04:49:46,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:46,554 INFO L225 Difference]: With dead ends: 1807 [2024-11-28 04:49:46,554 INFO L226 Difference]: Without dead ends: 1151 [2024-11-28 04:49:46,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:49:46,557 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 519 mSDsluCounter, 2127 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:46,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 2345 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:49:46,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2024-11-28 04:49:46,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 703. [2024-11-28 04:49:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 566 states have (on average 1.4505300353356891) internal successors, (821), 566 states have internal predecessors, (821), 132 states have call successors, (132), 4 states have call predecessors, (132), 4 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2024-11-28 04:49:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1085 transitions. [2024-11-28 04:49:46,641 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1085 transitions. Word has length 300 [2024-11-28 04:49:46,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:46,642 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1085 transitions. [2024-11-28 04:49:46,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 11.2) internal successors, (168), 16 states have internal predecessors, (168), 6 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 5 states have call predecessors, (132), 6 states have call successors, (132) [2024-11-28 04:49:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1085 transitions. [2024-11-28 04:49:46,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-28 04:49:46,648 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:46,648 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:46,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:49:46,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:46,849 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:46,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:46,850 INFO L85 PathProgramCache]: Analyzing trace with hash 782278957, now seen corresponding path program 1 times [2024-11-28 04:49:46,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:46,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451779657] [2024-11-28 04:49:46,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:46,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:47,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-28 04:49:47,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:47,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451779657] [2024-11-28 04:49:47,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451779657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:47,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:49:47,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:49:47,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273429973] [2024-11-28 04:49:47,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:47,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:49:47,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:47,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:49:47,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:49:47,989 INFO L87 Difference]: Start difference. First operand 703 states and 1085 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-28 04:49:48,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:48,426 INFO L93 Difference]: Finished difference Result 1647 states and 2543 transitions. [2024-11-28 04:49:48,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:49:48,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 300 [2024-11-28 04:49:48,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:48,436 INFO L225 Difference]: With dead ends: 1647 [2024-11-28 04:49:48,436 INFO L226 Difference]: Without dead ends: 1159 [2024-11-28 04:49:48,438 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 04:49:48,440 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 228 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:48,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 960 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:49:48,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-28 04:49:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1013. [2024-11-28 04:49:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 786 states have (on average 1.4236641221374047) internal successors, (1119), 786 states have internal predecessors, (1119), 220 states have call successors, (220), 6 states have call predecessors, (220), 6 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2024-11-28 04:49:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1559 transitions. [2024-11-28 04:49:48,541 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1559 transitions. Word has length 300 [2024-11-28 04:49:48,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:48,542 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 1559 transitions. [2024-11-28 04:49:48,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-28 04:49:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1559 transitions. [2024-11-28 04:49:48,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-28 04:49:48,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:48,549 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:49:48,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:49:48,550 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:48,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:48,550 INFO L85 PathProgramCache]: Analyzing trace with hash 844318571, now seen corresponding path program 1 times [2024-11-28 04:49:48,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:48,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575874103] [2024-11-28 04:49:48,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:48,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 81 proven. 171 refuted. 0 times theorem prover too weak. 3532 trivial. 0 not checked. [2024-11-28 04:49:52,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:52,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575874103] [2024-11-28 04:49:52,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575874103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:52,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697464134] [2024-11-28 04:49:52,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:52,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:52,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:52,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:52,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:49:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:53,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:49:53,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2596 proven. 111 refuted. 0 times theorem prover too weak. 1077 trivial. 0 not checked. [2024-11-28 04:49:56,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 141 proven. 114 refuted. 0 times theorem prover too weak. 3529 trivial. 0 not checked. [2024-11-28 04:49:57,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697464134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:57,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:57,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 37 [2024-11-28 04:49:57,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189268157] [2024-11-28 04:49:57,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:57,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-28 04:49:57,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:57,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-28 04:49:57,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 04:49:57,346 INFO L87 Difference]: Start difference. First operand 1013 states and 1559 transitions. Second operand has 37 states, 33 states have (on average 6.636363636363637) internal successors, (219), 36 states have internal predecessors, (219), 15 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 11 states have call predecessors, (132), 15 states have call successors, (132) [2024-11-28 04:50:13,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:13,242 INFO L93 Difference]: Finished difference Result 7229 states and 10784 transitions. [2024-11-28 04:50:13,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-28 04:50:13,243 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 6.636363636363637) internal successors, (219), 36 states have internal predecessors, (219), 15 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 11 states have call predecessors, (132), 15 states have call successors, (132) Word has length 300 [2024-11-28 04:50:13,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:13,275 INFO L225 Difference]: With dead ends: 7229 [2024-11-28 04:50:13,276 INFO L226 Difference]: Without dead ends: 6317 [2024-11-28 04:50:13,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4987 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=2660, Invalid=12592, Unknown=0, NotChecked=0, Total=15252 [2024-11-28 04:50:13,283 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 7233 mSDsluCounter, 3078 mSDsCounter, 0 mSdLazyCounter, 3469 mSolverCounterSat, 2386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7284 SdHoareTripleChecker+Valid, 3280 SdHoareTripleChecker+Invalid, 5855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2386 IncrementalHoareTripleChecker+Valid, 3469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:13,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7284 Valid, 3280 Invalid, 5855 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2386 Valid, 3469 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-28 04:50:13,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2024-11-28 04:50:13,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 2431. [2024-11-28 04:50:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 1951 states have (on average 1.4085084572014352) internal successors, (2748), 1955 states have internal predecessors, (2748), 448 states have call successors, (448), 31 states have call predecessors, (448), 31 states have return successors, (448), 444 states have call predecessors, (448), 448 states have call successors, (448) [2024-11-28 04:50:13,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3644 transitions. [2024-11-28 04:50:13,789 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3644 transitions. Word has length 300 [2024-11-28 04:50:13,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:13,790 INFO L471 AbstractCegarLoop]: Abstraction has 2431 states and 3644 transitions. [2024-11-28 04:50:13,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 6.636363636363637) internal successors, (219), 36 states have internal predecessors, (219), 15 states have call successors, (132), 6 states have call predecessors, (132), 10 states have return successors, (132), 11 states have call predecessors, (132), 15 states have call successors, (132) [2024-11-28 04:50:13,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3644 transitions. [2024-11-28 04:50:13,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-28 04:50:13,794 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:50:13,795 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:50:13,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:50:13,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:13,999 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:50:14,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:50:14,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1793529643, now seen corresponding path program 1 times [2024-11-28 04:50:14,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:50:14,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966507712] [2024-11-28 04:50:14,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:14,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:50:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 51 proven. 78 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-28 04:50:15,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:15,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966507712] [2024-11-28 04:50:15,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966507712] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:15,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946469473] [2024-11-28 04:50:15,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:50:15,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:15,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:15,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:15,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:50:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:50:15,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:50:15,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:17,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2001 proven. 324 refuted. 0 times theorem prover too weak. 1459 trivial. 0 not checked. [2024-11-28 04:50:17,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:44,753 WARN L286 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 15 DAG size of output: 1 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:51:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 156 proven. 342 refuted. 0 times theorem prover too weak. 3286 trivial. 0 not checked. [2024-11-28 04:51:12,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946469473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:12,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:12,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 17] total 39 [2024-11-28 04:51:12,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133845644] [2024-11-28 04:51:12,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:12,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 04:51:12,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:12,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 04:51:12,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1175, Unknown=1, NotChecked=0, Total=1482 [2024-11-28 04:51:12,021 INFO L87 Difference]: Start difference. First operand 2431 states and 3644 transitions. Second operand has 39 states, 36 states have (on average 5.888888888888889) internal successors, (212), 35 states have internal predecessors, (212), 13 states have call successors, (132), 6 states have call predecessors, (132), 13 states have return successors, (132), 12 states have call predecessors, (132), 13 states have call successors, (132) [2024-11-28 04:51:34,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:34,550 INFO L93 Difference]: Finished difference Result 18527 states and 27456 transitions. [2024-11-28 04:51:34,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-28 04:51:34,552 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 5.888888888888889) internal successors, (212), 35 states have internal predecessors, (212), 13 states have call successors, (132), 6 states have call predecessors, (132), 13 states have return successors, (132), 12 states have call predecessors, (132), 13 states have call successors, (132) Word has length 300 [2024-11-28 04:51:34,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:34,625 INFO L225 Difference]: With dead ends: 18527 [2024-11-28 04:51:34,625 INFO L226 Difference]: Without dead ends: 16221 [2024-11-28 04:51:34,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5747 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=2980, Invalid=12769, Unknown=1, NotChecked=0, Total=15750 [2024-11-28 04:51:34,640 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 6089 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 4984 mSolverCounterSat, 1437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6114 SdHoareTripleChecker+Valid, 4001 SdHoareTripleChecker+Invalid, 6421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1437 IncrementalHoareTripleChecker+Valid, 4984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:34,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6114 Valid, 4001 Invalid, 6421 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1437 Valid, 4984 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2024-11-28 04:51:34,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16221 states. [2024-11-28 04:51:37,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16221 to 8857. [2024-11-28 04:51:37,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8857 states, 7191 states have (on average 1.379224030037547) internal successors, (9918), 7213 states have internal predecessors, (9918), 1538 states have call successors, (1538), 127 states have call predecessors, (1538), 127 states have return successors, (1538), 1516 states have call predecessors, (1538), 1538 states have call successors, (1538) [2024-11-28 04:51:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8857 states to 8857 states and 12994 transitions. [2024-11-28 04:51:37,402 INFO L78 Accepts]: Start accepts. Automaton has 8857 states and 12994 transitions. Word has length 300 [2024-11-28 04:51:37,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:37,403 INFO L471 AbstractCegarLoop]: Abstraction has 8857 states and 12994 transitions. [2024-11-28 04:51:37,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 5.888888888888889) internal successors, (212), 35 states have internal predecessors, (212), 13 states have call successors, (132), 6 states have call predecessors, (132), 13 states have return successors, (132), 12 states have call predecessors, (132), 13 states have call successors, (132) [2024-11-28 04:51:37,404 INFO L276 IsEmpty]: Start isEmpty. Operand 8857 states and 12994 transitions. [2024-11-28 04:51:37,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-11-28 04:51:37,410 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:37,410 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:37,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:51:37,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:51:37,615 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:37,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:37,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1867588926, now seen corresponding path program 1 times [2024-11-28 04:51:37,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:37,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227080407] [2024-11-28 04:51:37,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:37,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:37,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-28 04:51:37,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:37,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227080407] [2024-11-28 04:51:37,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227080407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:37,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:37,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:51:37,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204164719] [2024-11-28 04:51:37,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:37,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:51:37,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:37,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:51:37,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:51:37,867 INFO L87 Difference]: Start difference. First operand 8857 states and 12994 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 04:51:40,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:40,118 INFO L93 Difference]: Finished difference Result 18489 states and 27159 transitions. [2024-11-28 04:51:40,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:51:40,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 300 [2024-11-28 04:51:40,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:40,162 INFO L225 Difference]: With dead ends: 18489 [2024-11-28 04:51:40,162 INFO L226 Difference]: Without dead ends: 10299 [2024-11-28 04:51:40,181 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 04:51:40,182 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 58 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:40,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 536 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:51:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10299 states. [2024-11-28 04:51:41,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10299 to 8857. [2024-11-28 04:51:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8857 states, 7191 states have (on average 1.372827145042414) internal successors, (9872), 7213 states have internal predecessors, (9872), 1538 states have call successors, (1538), 127 states have call predecessors, (1538), 127 states have return successors, (1538), 1516 states have call predecessors, (1538), 1538 states have call successors, (1538) [2024-11-28 04:51:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8857 states to 8857 states and 12948 transitions. [2024-11-28 04:51:42,040 INFO L78 Accepts]: Start accepts. Automaton has 8857 states and 12948 transitions. Word has length 300 [2024-11-28 04:51:42,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:42,041 INFO L471 AbstractCegarLoop]: Abstraction has 8857 states and 12948 transitions. [2024-11-28 04:51:42,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 04:51:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 8857 states and 12948 transitions. [2024-11-28 04:51:42,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-28 04:51:42,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:42,048 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:42,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:51:42,048 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:42,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:42,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2029659106, now seen corresponding path program 1 times [2024-11-28 04:51:42,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:42,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650364259] [2024-11-28 04:51:42,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:42,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-28 04:51:43,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:43,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650364259] [2024-11-28 04:51:43,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650364259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:43,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:43,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:51:43,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060972381] [2024-11-28 04:51:43,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:43,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:51:43,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:43,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:51:43,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:51:43,297 INFO L87 Difference]: Start difference. First operand 8857 states and 12948 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 04:51:47,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:47,353 INFO L93 Difference]: Finished difference Result 32757 states and 47841 transitions. [2024-11-28 04:51:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:51:47,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 301 [2024-11-28 04:51:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:47,431 INFO L225 Difference]: With dead ends: 32757 [2024-11-28 04:51:47,431 INFO L226 Difference]: Without dead ends: 24343 [2024-11-28 04:51:47,454 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:51:47,455 INFO L435 NwaCegarLoop]: 346 mSDtfsCounter, 577 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:47,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1743 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:51:47,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24343 states. [2024-11-28 04:51:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24343 to 14503. [2024-11-28 04:51:49,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14503 states, 12310 states have (on average 1.3709179528838342) internal successors, (16876), 12386 states have internal predecessors, (16876), 1984 states have call successors, (1984), 208 states have call predecessors, (1984), 208 states have return successors, (1984), 1908 states have call predecessors, (1984), 1984 states have call successors, (1984) [2024-11-28 04:51:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14503 states to 14503 states and 20844 transitions. [2024-11-28 04:51:49,841 INFO L78 Accepts]: Start accepts. Automaton has 14503 states and 20844 transitions. Word has length 301 [2024-11-28 04:51:49,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:49,841 INFO L471 AbstractCegarLoop]: Abstraction has 14503 states and 20844 transitions. [2024-11-28 04:51:49,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 04:51:49,842 INFO L276 IsEmpty]: Start isEmpty. Operand 14503 states and 20844 transitions. [2024-11-28 04:51:49,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-28 04:51:49,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:49,852 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:49,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:51:49,852 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:49,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:49,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1518630526, now seen corresponding path program 1 times [2024-11-28 04:51:49,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:49,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380912632] [2024-11-28 04:51:49,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:49,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-28 04:51:50,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:50,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380912632] [2024-11-28 04:51:50,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380912632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:50,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:50,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:51:50,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352542427] [2024-11-28 04:51:50,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:50,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:51:50,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:50,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:51:50,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:51:50,796 INFO L87 Difference]: Start difference. First operand 14503 states and 20844 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-28 04:51:53,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:53,501 INFO L93 Difference]: Finished difference Result 24251 states and 34930 transitions. [2024-11-28 04:51:53,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:51:53,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 301 [2024-11-28 04:51:53,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:53,565 INFO L225 Difference]: With dead ends: 24251 [2024-11-28 04:51:53,565 INFO L226 Difference]: Without dead ends: 17721 [2024-11-28 04:51:53,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:51:53,584 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 522 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:53,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1373 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:51:53,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17721 states. [2024-11-28 04:51:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17721 to 14503. [2024-11-28 04:51:55,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14503 states, 12310 states have (on average 1.3707554833468725) internal successors, (16874), 12386 states have internal predecessors, (16874), 1984 states have call successors, (1984), 208 states have call predecessors, (1984), 208 states have return successors, (1984), 1908 states have call predecessors, (1984), 1984 states have call successors, (1984) [2024-11-28 04:51:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14503 states to 14503 states and 20842 transitions. [2024-11-28 04:51:56,021 INFO L78 Accepts]: Start accepts. Automaton has 14503 states and 20842 transitions. Word has length 301 [2024-11-28 04:51:56,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:56,022 INFO L471 AbstractCegarLoop]: Abstraction has 14503 states and 20842 transitions. [2024-11-28 04:51:56,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-28 04:51:56,022 INFO L276 IsEmpty]: Start isEmpty. Operand 14503 states and 20842 transitions. [2024-11-28 04:51:56,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-28 04:51:56,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:56,030 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:51:56,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:51:56,030 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:56,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:56,031 INFO L85 PathProgramCache]: Analyzing trace with hash -530757316, now seen corresponding path program 1 times [2024-11-28 04:51:56,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:56,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616954430] [2024-11-28 04:51:56,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:56,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-28 04:51:57,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:57,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616954430] [2024-11-28 04:51:57,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616954430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:57,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:57,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:51:57,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736373206] [2024-11-28 04:51:57,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:57,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:51:57,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:57,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:51:57,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:51:57,545 INFO L87 Difference]: Start difference. First operand 14503 states and 20842 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-28 04:52:00,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:00,242 INFO L93 Difference]: Finished difference Result 23579 states and 33946 transitions. [2024-11-28 04:52:00,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:52:00,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 301 [2024-11-28 04:52:00,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:00,294 INFO L225 Difference]: With dead ends: 23579 [2024-11-28 04:52:00,294 INFO L226 Difference]: Without dead ends: 17057 [2024-11-28 04:52:00,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:52:00,313 INFO L435 NwaCegarLoop]: 373 mSDtfsCounter, 528 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:00,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1403 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:52:00,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17057 states. [2024-11-28 04:52:02,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17057 to 15049. [2024-11-28 04:52:02,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15049 states, 12856 states have (on average 1.3747666459240822) internal successors, (17674), 12932 states have internal predecessors, (17674), 1984 states have call successors, (1984), 208 states have call predecessors, (1984), 208 states have return successors, (1984), 1908 states have call predecessors, (1984), 1984 states have call successors, (1984) [2024-11-28 04:52:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15049 states to 15049 states and 21642 transitions. [2024-11-28 04:52:02,432 INFO L78 Accepts]: Start accepts. Automaton has 15049 states and 21642 transitions. Word has length 301 [2024-11-28 04:52:02,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:02,433 INFO L471 AbstractCegarLoop]: Abstraction has 15049 states and 21642 transitions. [2024-11-28 04:52:02,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-11-28 04:52:02,433 INFO L276 IsEmpty]: Start isEmpty. Operand 15049 states and 21642 transitions. [2024-11-28 04:52:02,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-28 04:52:02,439 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:02,439 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:02,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:52:02,439 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:02,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:02,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1382374907, now seen corresponding path program 1 times [2024-11-28 04:52:02,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:02,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491545629] [2024-11-28 04:52:02,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:02,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 99 proven. 30 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-28 04:52:03,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491545629] [2024-11-28 04:52:03,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491545629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696471008] [2024-11-28 04:52:03,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:03,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:03,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:03,425 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:03,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:52:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:03,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:52:03,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1429 proven. 30 refuted. 0 times theorem prover too weak. 2325 trivial. 0 not checked. [2024-11-28 04:52:04,028 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 99 proven. 30 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-28 04:52:04,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696471008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:52:04,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:52:04,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2024-11-28 04:52:04,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011612197] [2024-11-28 04:52:04,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:04,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:52:04,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:04,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:52:04,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:52:04,400 INFO L87 Difference]: Start difference. First operand 15049 states and 21642 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2024-11-28 04:52:07,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:07,189 INFO L93 Difference]: Finished difference Result 25914 states and 37029 transitions. [2024-11-28 04:52:07,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:52:07,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 302 [2024-11-28 04:52:07,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:07,227 INFO L225 Difference]: With dead ends: 25914 [2024-11-28 04:52:07,227 INFO L226 Difference]: Without dead ends: 11521 [2024-11-28 04:52:07,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:52:07,250 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 687 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:07,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 476 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:52:07,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11521 states. [2024-11-28 04:52:09,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11521 to 11251. [2024-11-28 04:52:09,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11251 states, 9093 states have (on average 1.3302540415704387) internal successors, (12096), 9161 states have internal predecessors, (12096), 1920 states have call successors, (1920), 237 states have call predecessors, (1920), 237 states have return successors, (1920), 1852 states have call predecessors, (1920), 1920 states have call successors, (1920) [2024-11-28 04:52:09,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11251 states to 11251 states and 15936 transitions. [2024-11-28 04:52:09,385 INFO L78 Accepts]: Start accepts. Automaton has 11251 states and 15936 transitions. Word has length 302 [2024-11-28 04:52:09,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:09,386 INFO L471 AbstractCegarLoop]: Abstraction has 11251 states and 15936 transitions. [2024-11-28 04:52:09,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 2 states have call successors, (54), 2 states have call predecessors, (54), 4 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2024-11-28 04:52:09,386 INFO L276 IsEmpty]: Start isEmpty. Operand 11251 states and 15936 transitions. [2024-11-28 04:52:09,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-28 04:52:09,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:09,389 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:52:09,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:52:09,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:52:09,589 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:09,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:09,590 INFO L85 PathProgramCache]: Analyzing trace with hash 589737518, now seen corresponding path program 1 times [2024-11-28 04:52:09,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:09,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725773593] [2024-11-28 04:52:09,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:09,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 87 proven. 165 refuted. 0 times theorem prover too weak. 3532 trivial. 0 not checked. [2024-11-28 04:52:32,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:32,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725773593] [2024-11-28 04:52:32,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725773593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:32,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512872100] [2024-11-28 04:52:32,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:32,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:32,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:32,690 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:32,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:52:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:33,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-28 04:52:33,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2232 proven. 450 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2024-11-28 04:52:39,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:53:15,751 WARN L286 SmtUtils]: Spent 9.22s on a formula simplification. DAG size of input: 84 DAG size of output: 52 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-28 04:53:59,336 WARN L286 SmtUtils]: Spent 32.36s on a formula simplification. DAG size of input: 156 DAG size of output: 64 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-28 04:54:14,194 WARN L286 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:54:32,751 WARN L286 SmtUtils]: Spent 18.48s on a formula simplification. DAG size of input: 133 DAG size of output: 64 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-28 04:54:42,382 WARN L286 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 101 DAG size of output: 45 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-28 04:58:24,412 WARN L286 SmtUtils]: Spent 2.95m on a formula simplification. DAG size of input: 487 DAG size of output: 428 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:58:24,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512872100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:58:24,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:58:24,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 33] total 56 [2024-11-28 04:58:24,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804162847] [2024-11-28 04:58:24,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:58:24,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-28 04:58:24,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:58:24,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-28 04:58:24,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=4126, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 04:58:24,424 INFO L87 Difference]: Start difference. First operand 11251 states and 15936 transitions. Second operand has 56 states, 54 states have (on average 3.7222222222222223) internal successors, (201), 51 states have internal predecessors, (201), 17 states have call successors, (88), 10 states have call predecessors, (88), 14 states have return successors, (88), 15 states have call predecessors, (88), 17 states have call successors, (88) [2024-11-28 04:58:49,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:58:49,109 INFO L93 Difference]: Finished difference Result 25470 states and 35704 transitions. [2024-11-28 04:58:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-28 04:58:49,109 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 54 states have (on average 3.7222222222222223) internal successors, (201), 51 states have internal predecessors, (201), 17 states have call successors, (88), 10 states have call predecessors, (88), 14 states have return successors, (88), 15 states have call predecessors, (88), 17 states have call successors, (88) Word has length 302 [2024-11-28 04:58:49,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:58:49,152 INFO L225 Difference]: With dead ends: 25470 [2024-11-28 04:58:49,152 INFO L226 Difference]: Without dead ends: 14880 [2024-11-28 04:58:49,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4233 ImplicationChecksByTransitivity, 211.7s TimeCoverageRelationStatistics Valid=2657, Invalid=14899, Unknown=0, NotChecked=0, Total=17556 [2024-11-28 04:58:49,178 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 6749 mSDsluCounter, 4428 mSDsCounter, 0 mSdLazyCounter, 5706 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6749 SdHoareTripleChecker+Valid, 4598 SdHoareTripleChecker+Invalid, 6449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 5706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:58:49,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6749 Valid, 4598 Invalid, 6449 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [743 Valid, 5706 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2024-11-28 04:58:49,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14880 states. [2024-11-28 04:58:51,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14880 to 10341. [2024-11-28 04:58:51,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10341 states, 8350 states have (on average 1.3253892215568863) internal successors, (11067), 8418 states have internal predecessors, (11067), 1768 states have call successors, (1768), 222 states have call predecessors, (1768), 222 states have return successors, (1768), 1700 states have call predecessors, (1768), 1768 states have call successors, (1768) [2024-11-28 04:58:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10341 states to 10341 states and 14603 transitions. [2024-11-28 04:58:51,179 INFO L78 Accepts]: Start accepts. Automaton has 10341 states and 14603 transitions. Word has length 302 [2024-11-28 04:58:51,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:58:51,179 INFO L471 AbstractCegarLoop]: Abstraction has 10341 states and 14603 transitions. [2024-11-28 04:58:51,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 54 states have (on average 3.7222222222222223) internal successors, (201), 51 states have internal predecessors, (201), 17 states have call successors, (88), 10 states have call predecessors, (88), 14 states have return successors, (88), 15 states have call predecessors, (88), 17 states have call successors, (88) [2024-11-28 04:58:51,180 INFO L276 IsEmpty]: Start isEmpty. Operand 10341 states and 14603 transitions. [2024-11-28 04:58:51,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-28 04:58:51,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:58:51,182 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:58:51,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:58:51,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:58:51,383 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:58:51,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:58:51,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1699674962, now seen corresponding path program 1 times [2024-11-28 04:58:51,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:58:51,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654990349] [2024-11-28 04:58:51,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:51,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:58:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:58:51,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [169802839] [2024-11-28 04:58:51,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:58:51,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:58:51,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:58:51,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:58:51,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:58:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:58:52,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-28 04:58:52,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:58:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2232 proven. 450 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2024-11-28 04:58:57,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:59:45,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:59:45,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654990349] [2024-11-28 04:59:45,098 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:59:45,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169802839] [2024-11-28 04:59:45,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169802839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:59:45,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:59:45,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2024-11-28 04:59:45,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106690869] [2024-11-28 04:59:45,099 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:59:45,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 04:59:45,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:59:45,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 04:59:45,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1584, Unknown=9, NotChecked=0, Total=1892 [2024-11-28 04:59:45,101 INFO L87 Difference]: Start difference. First operand 10341 states and 14603 transitions. Second operand has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 31 states have internal predecessors, (118), 9 states have call successors, (44), 9 states have call predecessors, (44), 12 states have return successors, (44), 9 states have call predecessors, (44), 9 states have call successors, (44) [2024-11-28 05:00:04,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:04,919 INFO L93 Difference]: Finished difference Result 23283 states and 32778 transitions. [2024-11-28 05:00:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 05:00:04,920 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 31 states have internal predecessors, (118), 9 states have call successors, (44), 9 states have call predecessors, (44), 12 states have return successors, (44), 9 states have call predecessors, (44), 9 states have call successors, (44) Word has length 302 [2024-11-28 05:00:04,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:04,965 INFO L225 Difference]: With dead ends: 23283 [2024-11-28 05:00:04,965 INFO L226 Difference]: Without dead ends: 13791 [2024-11-28 05:00:04,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1926 ImplicationChecksByTransitivity, 50.6s TimeCoverageRelationStatistics Valid=1184, Invalid=5947, Unknown=9, NotChecked=0, Total=7140 [2024-11-28 05:00:04,992 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 1426 mSDsluCounter, 3707 mSDsCounter, 0 mSdLazyCounter, 3243 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 4023 SdHoareTripleChecker+Invalid, 3637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 3243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:04,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1426 Valid, 4023 Invalid, 3637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 3243 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2024-11-28 05:00:05,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13791 states. [2024-11-28 05:00:08,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13791 to 11059. [2024-11-28 05:00:08,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11059 states, 8890 states have (on average 1.3200224971878516) internal successors, (11735), 8962 states have internal predecessors, (11735), 1928 states have call successors, (1928), 240 states have call predecessors, (1928), 240 states have return successors, (1928), 1856 states have call predecessors, (1928), 1928 states have call successors, (1928) [2024-11-28 05:00:08,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11059 states to 11059 states and 15591 transitions. [2024-11-28 05:00:08,232 INFO L78 Accepts]: Start accepts. Automaton has 11059 states and 15591 transitions. Word has length 302 [2024-11-28 05:00:08,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:08,233 INFO L471 AbstractCegarLoop]: Abstraction has 11059 states and 15591 transitions. [2024-11-28 05:00:08,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2777777777777777) internal successors, (118), 31 states have internal predecessors, (118), 9 states have call successors, (44), 9 states have call predecessors, (44), 12 states have return successors, (44), 9 states have call predecessors, (44), 9 states have call successors, (44) [2024-11-28 05:00:08,233 INFO L276 IsEmpty]: Start isEmpty. Operand 11059 states and 15591 transitions. [2024-11-28 05:00:08,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-28 05:00:08,236 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:08,236 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:08,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:00:08,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 05:00:08,437 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:08,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:08,437 INFO L85 PathProgramCache]: Analyzing trace with hash 500760822, now seen corresponding path program 1 times [2024-11-28 05:00:08,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:08,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856986005] [2024-11-28 05:00:08,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:08,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-28 05:00:09,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:09,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856986005] [2024-11-28 05:00:09,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856986005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:09,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:09,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:00:09,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909921614] [2024-11-28 05:00:09,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:09,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:00:09,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:09,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:00:09,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:00:09,479 INFO L87 Difference]: Start difference. First operand 11059 states and 15591 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 05:00:15,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:15,073 INFO L93 Difference]: Finished difference Result 28153 states and 39673 transitions. [2024-11-28 05:00:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:00:15,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 302 [2024-11-28 05:00:15,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:15,123 INFO L225 Difference]: With dead ends: 28153 [2024-11-28 05:00:15,123 INFO L226 Difference]: Without dead ends: 17801 [2024-11-28 05:00:15,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:00:15,140 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 423 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:15,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1594 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 05:00:15,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17801 states. [2024-11-28 05:00:17,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17801 to 9643. [2024-11-28 05:00:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9643 states, 7724 states have (on average 1.3126618332470223) internal successors, (10139), 7746 states have internal predecessors, (10139), 1678 states have call successors, (1678), 240 states have call predecessors, (1678), 240 states have return successors, (1678), 1656 states have call predecessors, (1678), 1678 states have call successors, (1678) [2024-11-28 05:00:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9643 states to 9643 states and 13495 transitions. [2024-11-28 05:00:17,615 INFO L78 Accepts]: Start accepts. Automaton has 9643 states and 13495 transitions. Word has length 302 [2024-11-28 05:00:17,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:17,616 INFO L471 AbstractCegarLoop]: Abstraction has 9643 states and 13495 transitions. [2024-11-28 05:00:17,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 05:00:17,616 INFO L276 IsEmpty]: Start isEmpty. Operand 9643 states and 13495 transitions. [2024-11-28 05:00:17,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-28 05:00:17,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:17,621 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:17,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 05:00:17,622 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:17,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:17,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1199733763, now seen corresponding path program 1 times [2024-11-28 05:00:17,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:17,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108813400] [2024-11-28 05:00:17,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:17,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 33 proven. 96 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-28 05:00:18,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:18,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108813400] [2024-11-28 05:00:18,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108813400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:18,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834098920] [2024-11-28 05:00:18,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:18,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:18,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:18,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:18,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:00:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:19,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:00:19,079 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:21,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1473 proven. 96 refuted. 0 times theorem prover too weak. 2215 trivial. 0 not checked. [2024-11-28 05:00:21,616 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:00:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 33 proven. 96 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-28 05:00:22,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834098920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:00:22,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:00:22,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 16 [2024-11-28 05:00:22,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821315595] [2024-11-28 05:00:22,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:00:22,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 05:00:22,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:22,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 05:00:22,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:00:22,856 INFO L87 Difference]: Start difference. First operand 9643 states and 13495 transitions. Second operand has 16 states, 15 states have (on average 10.666666666666666) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) [2024-11-28 05:00:28,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:28,510 INFO L93 Difference]: Finished difference Result 20486 states and 28699 transitions. [2024-11-28 05:00:28,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:00:28,511 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 10.666666666666666) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) Word has length 302 [2024-11-28 05:00:28,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:28,553 INFO L225 Difference]: With dead ends: 20486 [2024-11-28 05:00:28,553 INFO L226 Difference]: Without dead ends: 12343 [2024-11-28 05:00:28,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2024-11-28 05:00:28,571 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 841 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:28,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 1413 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 05:00:28,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12343 states. [2024-11-28 05:00:30,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12343 to 9423. [2024-11-28 05:00:30,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9423 states, 7543 states have (on average 1.309028238101551) internal successors, (9874), 7561 states have internal predecessors, (9874), 1630 states have call successors, (1630), 249 states have call predecessors, (1630), 249 states have return successors, (1630), 1612 states have call predecessors, (1630), 1630 states have call successors, (1630) [2024-11-28 05:00:30,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9423 states to 9423 states and 13134 transitions. [2024-11-28 05:00:30,844 INFO L78 Accepts]: Start accepts. Automaton has 9423 states and 13134 transitions. Word has length 302 [2024-11-28 05:00:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:30,845 INFO L471 AbstractCegarLoop]: Abstraction has 9423 states and 13134 transitions. [2024-11-28 05:00:30,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 10.666666666666666) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (132), 3 states have call predecessors, (132), 6 states have return successors, (132), 4 states have call predecessors, (132), 5 states have call successors, (132) [2024-11-28 05:00:30,845 INFO L276 IsEmpty]: Start isEmpty. Operand 9423 states and 13134 transitions. [2024-11-28 05:00:30,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2024-11-28 05:00:30,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:30,848 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:00:30,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 05:00:31,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 05:00:31,048 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:31,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1177101509, now seen corresponding path program 1 times [2024-11-28 05:00:31,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:31,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347582377] [2024-11-28 05:00:31,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:31,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:00:31,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40602759] [2024-11-28 05:00:31,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:31,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:31,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:31,458 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:31,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:00:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:31,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 05:00:31,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:46,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2030 proven. 420 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2024-11-28 05:00:46,200 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:00:56,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:56,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347582377] [2024-11-28 05:00:56,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:00:56,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40602759] [2024-11-28 05:00:56,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40602759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:56,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:00:56,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2024-11-28 05:00:56,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799137898] [2024-11-28 05:00:56,664 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:00:56,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 05:00:56,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:56,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 05:00:56,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1007, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 05:00:56,666 INFO L87 Difference]: Start difference. First operand 9423 states and 13134 transitions. Second operand has 28 states, 28 states have (on average 3.892857142857143) internal successors, (109), 25 states have internal predecessors, (109), 6 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2024-11-28 05:01:08,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:24,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:28,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:41,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:42,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:47,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:49,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:54,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:56,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:01:58,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:02:00,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:02:00,351 INFO L93 Difference]: Finished difference Result 24700 states and 34195 transitions. [2024-11-28 05:02:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 05:02:00,351 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.892857142857143) internal successors, (109), 25 states have internal predecessors, (109), 6 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) Word has length 302 [2024-11-28 05:02:00,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:02:00,380 INFO L225 Difference]: With dead ends: 24700 [2024-11-28 05:02:00,380 INFO L226 Difference]: Without dead ends: 16088 [2024-11-28 05:02:00,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 318 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=706, Invalid=3584, Unknown=0, NotChecked=0, Total=4290 [2024-11-28 05:02:00,392 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 2278 mSDsluCounter, 3402 mSDsCounter, 0 mSdLazyCounter, 2874 mSolverCounterSat, 154 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 3773 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2874 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:02:00,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 3773 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2874 Invalid, 5 Unknown, 0 Unchecked, 51.1s Time] [2024-11-28 05:02:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16088 states. [2024-11-28 05:02:03,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16088 to 13149. [2024-11-28 05:02:03,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13149 states, 10356 states have (on average 1.2917149478563152) internal successors, (13377), 10384 states have internal predecessors, (13377), 2408 states have call successors, (2408), 384 states have call predecessors, (2408), 384 states have return successors, (2408), 2380 states have call predecessors, (2408), 2408 states have call successors, (2408) [2024-11-28 05:02:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13149 states to 13149 states and 18193 transitions. [2024-11-28 05:02:03,162 INFO L78 Accepts]: Start accepts. Automaton has 13149 states and 18193 transitions. Word has length 302 [2024-11-28 05:02:03,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:02:03,162 INFO L471 AbstractCegarLoop]: Abstraction has 13149 states and 18193 transitions. [2024-11-28 05:02:03,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.892857142857143) internal successors, (109), 25 states have internal predecessors, (109), 6 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 6 states have call predecessors, (44), 6 states have call successors, (44) [2024-11-28 05:02:03,163 INFO L276 IsEmpty]: Start isEmpty. Operand 13149 states and 18193 transitions. [2024-11-28 05:02:03,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-28 05:02:03,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:02:03,167 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:03,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 05:02:03,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:02:03,368 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:02:03,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:03,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1730298315, now seen corresponding path program 1 times [2024-11-28 05:02:03,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:03,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491825657] [2024-11-28 05:02:03,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:03,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-28 05:02:05,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:02:05,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491825657] [2024-11-28 05:02:05,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491825657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:02:05,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:02:05,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:02:05,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35327517] [2024-11-28 05:02:05,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:02:05,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:02:05,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:02:05,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:02:05,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:02:05,966 INFO L87 Difference]: Start difference. First operand 13149 states and 18193 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 05:02:13,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:02:13,498 INFO L93 Difference]: Finished difference Result 39594 states and 54705 transitions. [2024-11-28 05:02:13,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:02:13,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 303 [2024-11-28 05:02:13,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:02:13,558 INFO L225 Difference]: With dead ends: 39594 [2024-11-28 05:02:13,558 INFO L226 Difference]: Without dead ends: 27660 [2024-11-28 05:02:13,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:02:13,578 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 713 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:02:13,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 869 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 05:02:13,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27660 states. [2024-11-28 05:02:18,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27660 to 21546. [2024-11-28 05:02:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21546 states, 17157 states have (on average 1.3001690272192108) internal successors, (22307), 17215 states have internal predecessors, (22307), 3794 states have call successors, (3794), 594 states have call predecessors, (3794), 594 states have return successors, (3794), 3736 states have call predecessors, (3794), 3794 states have call successors, (3794) [2024-11-28 05:02:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21546 states to 21546 states and 29895 transitions. [2024-11-28 05:02:18,641 INFO L78 Accepts]: Start accepts. Automaton has 21546 states and 29895 transitions. Word has length 303 [2024-11-28 05:02:18,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:02:18,641 INFO L471 AbstractCegarLoop]: Abstraction has 21546 states and 29895 transitions. [2024-11-28 05:02:18,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-28 05:02:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 21546 states and 29895 transitions. [2024-11-28 05:02:18,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-28 05:02:18,648 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:02:18,648 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:02:18,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 05:02:18,649 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:02:18,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:02:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1511443597, now seen corresponding path program 1 times [2024-11-28 05:02:18,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:02:18,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253418907] [2024-11-28 05:02:18,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:18,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:02:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 05:02:19,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859902671] [2024-11-28 05:02:19,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:02:19,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:02:19,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:02:19,229 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:02:19,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f02593d-00fd-4348-ad95-1850eebf076a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:02:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:02:20,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-28 05:02:20,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:02:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2190 proven. 300 refuted. 0 times theorem prover too weak. 1294 trivial. 0 not checked. [2024-11-28 05:02:29,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:03:21,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:03:21,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253418907] [2024-11-28 05:03:21,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 05:03:21,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859902671] [2024-11-28 05:03:21,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859902671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:03:21,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:03:21,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2024-11-28 05:03:21,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099900165] [2024-11-28 05:03:21,162 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 05:03:21,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 05:03:21,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:03:21,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 05:03:21,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1378, Unknown=6, NotChecked=0, Total=1640 [2024-11-28 05:03:21,164 INFO L87 Difference]: Start difference. First operand 21546 states and 29895 transitions. Second operand has 28 states, 28 states have (on average 3.9285714285714284) internal successors, (110), 24 states have internal predecessors, (110), 6 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 7 states have call predecessors, (44), 6 states have call successors, (44)