./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl --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 9a16e358cfe89c56ff212fd47034f5c1550027d42d4d56ed5c454e284a697aae --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:11:57,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:11:57,158 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:11:57,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:11:57,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:11:57,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:11:57,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:11:57,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:11:57,213 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:11:57,218 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:11:57,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:11:57,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:11:57,221 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:11:57,223 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:11:57,223 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:11:57,224 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:11:57,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:11:57,225 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:11:57,225 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:11:57,226 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:11:57,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:11:57,227 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:11:57,227 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:11:57,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:11:57,228 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:11:57,229 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:11:57,229 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:11:57,230 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:11:57,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:57,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:11:57,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:11:57,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:11:57,232 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:11:57,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:11:57,233 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:11:57,233 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:11:57,233 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:11:57,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:11:57,234 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:11:57,234 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a16e358cfe89c56ff212fd47034f5c1550027d42d4d56ed5c454e284a697aae [2023-11-12 02:11:57,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:11:57,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:11:57,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:11:57,576 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:11:57,576 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:11:57,577 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c [2023-11-12 02:12:00,622 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:12:01,354 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:12:01,355 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c [2023-11-12 02:12:01,411 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/data/ce7ac1cfe/b63b4bcf8ea044b3bb5851691f6d030f/FLAG27d258d5a [2023-11-12 02:12:01,428 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/data/ce7ac1cfe/b63b4bcf8ea044b3bb5851691f6d030f [2023-11-12 02:12:01,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:12:01,437 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:12:01,442 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:01,442 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:12:01,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:12:01,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:01" (1/1) ... [2023-11-12 02:12:01,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33fb099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:01, skipping insertion in model container [2023-11-12 02:12:01,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:01" (1/1) ... [2023-11-12 02:12:01,809 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:12:04,024 WARN L240 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_cd0d0611-4f06-4032-9f19-bdf7b350148d/sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c[377340,377353] [2023-11-12 02:12:04,058 WARN L240 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_cd0d0611-4f06-4032-9f19-bdf7b350148d/sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c[383339,383352] [2023-11-12 02:12:04,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:04,288 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:12:05,483 WARN L240 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_cd0d0611-4f06-4032-9f19-bdf7b350148d/sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c[377340,377353] [2023-11-12 02:12:05,492 WARN L240 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_cd0d0611-4f06-4032-9f19-bdf7b350148d/sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c[383339,383352] [2023-11-12 02:12:05,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:05,656 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:12:05,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:05 WrapperNode [2023-11-12 02:12:05,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:05,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:05,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:12:05,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:12:05,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:05" (1/1) ... [2023-11-12 02:12:05,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:05" (1/1) ... [2023-11-12 02:12:06,056 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12688 [2023-11-12 02:12:06,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:06,058 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:12:06,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:12:06,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:12:06,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:05" (1/1) ... [2023-11-12 02:12:06,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:05" (1/1) ... [2023-11-12 02:12:06,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:05" (1/1) ... [2023-11-12 02:12:06,253 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:05" (1/1) ... [2023-11-12 02:12:06,413 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:05" (1/1) ... [2023-11-12 02:12:06,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:05" (1/1) ... [2023-11-12 02:12:06,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:05" (1/1) ... [2023-11-12 02:12:06,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:05" (1/1) ... [2023-11-12 02:12:06,663 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:12:06,664 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:12:06,664 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:12:06,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:12:06,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:05" (1/1) ... [2023-11-12 02:12:06,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:06,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:06,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:12:06,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:12:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:12:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-12 02:12:06,737 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-12 02:12:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-12 02:12:06,738 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-12 02:12:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-12 02:12:06,738 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-12 02:12:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-12 02:12:06,738 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-12 02:12:06,740 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-12 02:12:06,740 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-12 02:12:06,740 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-12 02:12:06,741 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-12 02:12:06,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:12:06,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:12:06,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:12:06,885 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:12:06,887 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:12:16,415 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:12:16,451 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:12:16,451 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-12 02:12:16,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:16 BoogieIcfgContainer [2023-11-12 02:12:16,459 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:12:16,462 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:12:16,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:12:16,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:12:16,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:12:01" (1/3) ... [2023-11-12 02:12:16,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ae2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:16, skipping insertion in model container [2023-11-12 02:12:16,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:05" (2/3) ... [2023-11-12 02:12:16,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ae2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:16, skipping insertion in model container [2023-11-12 02:12:16,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:16" (3/3) ... [2023-11-12 02:12:16,478 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.03.cil-2.c [2023-11-12 02:12:16,499 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:12:16,500 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:12:16,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:12:16,629 INFO L357 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, mHoare=true, 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;@4eead7b4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:12:16,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 02:12:16,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 2344 states, 2318 states have (on average 1.8541846419327006) internal successors, (4298), 2321 states have internal predecessors, (4298), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-12 02:12:16,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:12:16,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:16,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:16,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:16,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:16,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1659781244, now seen corresponding path program 1 times [2023-11-12 02:12:16,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:16,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508043493] [2023-11-12 02:12:16,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:16,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:12:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:17,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:12:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:17,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:12:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:17,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:17,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:12:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:17,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:17,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508043493] [2023-11-12 02:12:17,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508043493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:17,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:17,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:12:17,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704687851] [2023-11-12 02:12:17,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:17,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:12:17,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:17,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:12:17,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:12:17,445 INFO L87 Difference]: Start difference. First operand has 2344 states, 2318 states have (on average 1.8541846419327006) internal successors, (4298), 2321 states have internal predecessors, (4298), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:18,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:18,992 INFO L93 Difference]: Finished difference Result 4911 states and 9024 transitions. [2023-11-12 02:12:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:12:18,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2023-11-12 02:12:18,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:19,025 INFO L225 Difference]: With dead ends: 4911 [2023-11-12 02:12:19,026 INFO L226 Difference]: Without dead ends: 2508 [2023-11-12 02:12:19,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:12:19,039 INFO L413 NwaCegarLoop]: 4166 mSDtfsCounter, 4555 mSDsluCounter, 12484 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4565 SdHoareTripleChecker+Valid, 16650 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:19,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4565 Valid, 16650 Invalid, 826 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [72 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 02:12:19,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2023-11-12 02:12:19,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2423. [2023-11-12 02:12:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2379 states have (on average 1.8263976460697773) internal successors, (4345), 2382 states have internal predecessors, (4345), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2023-11-12 02:12:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4406 transitions. [2023-11-12 02:12:19,328 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4406 transitions. Word has length 79 [2023-11-12 02:12:19,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:19,329 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 4406 transitions. [2023-11-12 02:12:19,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:19,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4406 transitions. [2023-11-12 02:12:19,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:12:19,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:19,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:19,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:12:19,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:19,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:19,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1422733048, now seen corresponding path program 1 times [2023-11-12 02:12:19,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:19,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413694949] [2023-11-12 02:12:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:19,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:12:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:12:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:12:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:12:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:19,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:19,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413694949] [2023-11-12 02:12:19,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413694949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:19,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:19,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:19,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948053012] [2023-11-12 02:12:19,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:19,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:19,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:19,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:19,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:19,597 INFO L87 Difference]: Start difference. First operand 2423 states and 4406 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:21,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:21,202 INFO L93 Difference]: Finished difference Result 2989 states and 5264 transitions. [2023-11-12 02:12:21,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:12:21,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2023-11-12 02:12:21,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:21,221 INFO L225 Difference]: With dead ends: 2989 [2023-11-12 02:12:21,222 INFO L226 Difference]: Without dead ends: 2698 [2023-11-12 02:12:21,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:12:21,226 INFO L413 NwaCegarLoop]: 4194 mSDtfsCounter, 4485 mSDsluCounter, 16591 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4495 SdHoareTripleChecker+Valid, 20785 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:21,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4495 Valid, 20785 Invalid, 1267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 02:12:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2023-11-12 02:12:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2560. [2023-11-12 02:12:21,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2560 states, 2497 states have (on average 1.8093712454945936) internal successors, (4518), 2501 states have internal predecessors, (4518), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2023-11-12 02:12:21,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 4605 transitions. [2023-11-12 02:12:21,340 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 4605 transitions. Word has length 79 [2023-11-12 02:12:21,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:21,340 INFO L495 AbstractCegarLoop]: Abstraction has 2560 states and 4605 transitions. [2023-11-12 02:12:21,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:21,341 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 4605 transitions. [2023-11-12 02:12:21,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:12:21,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:21,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:21,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:12:21,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:21,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:21,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1477125946, now seen corresponding path program 1 times [2023-11-12 02:12:21,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:21,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728557808] [2023-11-12 02:12:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:21,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:12:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:12:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:12:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:12:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:21,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:21,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728557808] [2023-11-12 02:12:21,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728557808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:21,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:21,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:21,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301673914] [2023-11-12 02:12:21,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:21,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:21,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:21,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:21,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:21,549 INFO L87 Difference]: Start difference. First operand 2560 states and 4605 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:23,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:23,258 INFO L93 Difference]: Finished difference Result 3483 states and 5999 transitions. [2023-11-12 02:12:23,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:12:23,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2023-11-12 02:12:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:23,280 INFO L225 Difference]: With dead ends: 3483 [2023-11-12 02:12:23,280 INFO L226 Difference]: Without dead ends: 3055 [2023-11-12 02:12:23,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:12:23,284 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4483 mSDsluCounter, 16591 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 20783 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:23,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4493 Valid, 20783 Invalid, 1265 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [45 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 02:12:23,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2023-11-12 02:12:23,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 2835. [2023-11-12 02:12:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2734 states have (on average 1.7794440380395025) internal successors, (4865), 2740 states have internal predecessors, (4865), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2023-11-12 02:12:23,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5008 transitions. [2023-11-12 02:12:23,407 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5008 transitions. Word has length 79 [2023-11-12 02:12:23,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:23,408 INFO L495 AbstractCegarLoop]: Abstraction has 2835 states and 5008 transitions. [2023-11-12 02:12:23,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:23,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5008 transitions. [2023-11-12 02:12:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:12:23,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:23,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:23,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:12:23,411 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:23,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:23,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1894522552, now seen corresponding path program 1 times [2023-11-12 02:12:23,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:23,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291135420] [2023-11-12 02:12:23,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:23,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:12:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:12:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:12:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:12:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:23,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:23,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291135420] [2023-11-12 02:12:23,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291135420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:23,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:23,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:23,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146118196] [2023-11-12 02:12:23,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:23,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:23,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:23,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:23,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:23,584 INFO L87 Difference]: Start difference. First operand 2835 states and 5008 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:25,217 INFO L93 Difference]: Finished difference Result 4438 states and 7418 transitions. [2023-11-12 02:12:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:12:25,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2023-11-12 02:12:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:25,241 INFO L225 Difference]: With dead ends: 4438 [2023-11-12 02:12:25,242 INFO L226 Difference]: Without dead ends: 3735 [2023-11-12 02:12:25,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-12 02:12:25,247 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4479 mSDsluCounter, 16591 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 20783 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:25,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 20783 Invalid, 1256 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 02:12:25,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2023-11-12 02:12:25,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3386. [2023-11-12 02:12:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3209 states have (on average 1.7323153630414458) internal successors, (5559), 3219 states have internal predecessors, (5559), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2023-11-12 02:12:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 5820 transitions. [2023-11-12 02:12:25,393 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 5820 transitions. Word has length 79 [2023-11-12 02:12:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:25,393 INFO L495 AbstractCegarLoop]: Abstraction has 3386 states and 5820 transitions. [2023-11-12 02:12:25,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:25,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 5820 transitions. [2023-11-12 02:12:25,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:12:25,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:25,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:25,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:12:25,397 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:25,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:25,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1215250298, now seen corresponding path program 1 times [2023-11-12 02:12:25,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:25,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425143904] [2023-11-12 02:12:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:25,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:12:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:25,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:12:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:12:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:25,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:25,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:12:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:25,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:25,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:25,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425143904] [2023-11-12 02:12:25,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425143904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:25,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:25,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:25,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494001898] [2023-11-12 02:12:25,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:25,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:25,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:25,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:25,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:25,550 INFO L87 Difference]: Start difference. First operand 3386 states and 5820 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:27,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:27,258 INFO L93 Difference]: Finished difference Result 6755 states and 10866 transitions. [2023-11-12 02:12:27,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:12:27,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2023-11-12 02:12:27,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:27,293 INFO L225 Difference]: With dead ends: 6755 [2023-11-12 02:12:27,294 INFO L226 Difference]: Without dead ends: 5501 [2023-11-12 02:12:27,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:12:27,301 INFO L413 NwaCegarLoop]: 4190 mSDtfsCounter, 4610 mSDsluCounter, 16583 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4624 SdHoareTripleChecker+Valid, 20773 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:27,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4624 Valid, 20773 Invalid, 1243 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 02:12:27,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5501 states. [2023-11-12 02:12:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5501 to 4469. [2023-11-12 02:12:27,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4148 states have (on average 1.6723722275795565) internal successors, (6937), 4166 states have internal predecessors, (6937), 201 states have call successors, (201), 102 states have call predecessors, (201), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2023-11-12 02:12:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7436 transitions. [2023-11-12 02:12:27,521 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7436 transitions. Word has length 79 [2023-11-12 02:12:27,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:27,521 INFO L495 AbstractCegarLoop]: Abstraction has 4469 states and 7436 transitions. [2023-11-12 02:12:27,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:27,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7436 transitions. [2023-11-12 02:12:27,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:12:27,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:27,526 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:27,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:12:27,526 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:27,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:27,527 INFO L85 PathProgramCache]: Analyzing trace with hash 746324360, now seen corresponding path program 1 times [2023-11-12 02:12:27,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:27,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599450252] [2023-11-12 02:12:27,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:27,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:27,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:12:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:12:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:27,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:12:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:27,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:12:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:27,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:27,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:27,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599450252] [2023-11-12 02:12:27,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599450252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:27,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:27,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:27,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679018776] [2023-11-12 02:12:27,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:27,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:27,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:27,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:27,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:27,680 INFO L87 Difference]: Start difference. First operand 4469 states and 7436 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:29,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:29,487 INFO L93 Difference]: Finished difference Result 10716 states and 16824 transitions. [2023-11-12 02:12:29,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:12:29,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2023-11-12 02:12:29,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:29,572 INFO L225 Difference]: With dead ends: 10716 [2023-11-12 02:12:29,573 INFO L226 Difference]: Without dead ends: 8379 [2023-11-12 02:12:29,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:12:29,591 INFO L413 NwaCegarLoop]: 4189 mSDtfsCounter, 4499 mSDsluCounter, 16580 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4508 SdHoareTripleChecker+Valid, 20769 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:29,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4508 Valid, 20769 Invalid, 1415 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 02:12:29,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8379 states. [2023-11-12 02:12:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8379 to 6544. [2023-11-12 02:12:30,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6544 states, 5943 states have (on average 1.6097930338213025) internal successors, (9567), 5977 states have internal predecessors, (9567), 369 states have call successors, (369), 198 states have call predecessors, (369), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2023-11-12 02:12:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6544 states to 6544 states and 10580 transitions. [2023-11-12 02:12:30,119 INFO L78 Accepts]: Start accepts. Automaton has 6544 states and 10580 transitions. Word has length 79 [2023-11-12 02:12:30,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:30,120 INFO L495 AbstractCegarLoop]: Abstraction has 6544 states and 10580 transitions. [2023-11-12 02:12:30,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:30,121 INFO L276 IsEmpty]: Start isEmpty. Operand 6544 states and 10580 transitions. [2023-11-12 02:12:30,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:12:30,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:30,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:30,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:12:30,130 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:30,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:30,131 INFO L85 PathProgramCache]: Analyzing trace with hash 948148294, now seen corresponding path program 1 times [2023-11-12 02:12:30,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:30,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529568413] [2023-11-12 02:12:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:30,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:30,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:12:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:30,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:12:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:30,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:12:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:30,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:30,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:12:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:30,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:30,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529568413] [2023-11-12 02:12:30,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529568413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:30,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:30,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:12:30,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602969236] [2023-11-12 02:12:30,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:30,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:12:30,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:30,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:12:30,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:12:30,335 INFO L87 Difference]: Start difference. First operand 6544 states and 10580 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:32,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:32,269 INFO L93 Difference]: Finished difference Result 17622 states and 27382 transitions. [2023-11-12 02:12:32,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:12:32,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2023-11-12 02:12:32,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:32,336 INFO L225 Difference]: With dead ends: 17622 [2023-11-12 02:12:32,337 INFO L226 Difference]: Without dead ends: 13210 [2023-11-12 02:12:32,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:12:32,361 INFO L413 NwaCegarLoop]: 4190 mSDtfsCounter, 4488 mSDsluCounter, 16583 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 20773 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:32,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4502 Valid, 20773 Invalid, 1200 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 02:12:32,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13210 states. [2023-11-12 02:12:33,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13210 to 10788. [2023-11-12 02:12:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10788 states, 9643 states have (on average 1.5587472778181064) internal successors, (15031), 9709 states have internal predecessors, (15031), 689 states have call successors, (689), 390 states have call predecessors, (689), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2023-11-12 02:12:33,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10788 states to 10788 states and 17202 transitions. [2023-11-12 02:12:33,105 INFO L78 Accepts]: Start accepts. Automaton has 10788 states and 17202 transitions. Word has length 79 [2023-11-12 02:12:33,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:33,107 INFO L495 AbstractCegarLoop]: Abstraction has 10788 states and 17202 transitions. [2023-11-12 02:12:33,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:33,108 INFO L276 IsEmpty]: Start isEmpty. Operand 10788 states and 17202 transitions. [2023-11-12 02:12:33,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:12:33,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:33,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:33,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:12:33,125 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:33,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:33,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1381877380, now seen corresponding path program 1 times [2023-11-12 02:12:33,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:33,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229730111] [2023-11-12 02:12:33,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:33,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:33,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:12:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:33,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:12:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:33,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:12:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:33,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:12:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:33,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:33,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229730111] [2023-11-12 02:12:33,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229730111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:33,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:33,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:12:33,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709786541] [2023-11-12 02:12:33,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:33,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:12:33,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:33,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:12:33,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:12:33,251 INFO L87 Difference]: Start difference. First operand 10788 states and 17202 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:34,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:34,956 INFO L93 Difference]: Finished difference Result 26631 states and 41350 transitions. [2023-11-12 02:12:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:12:34,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2023-11-12 02:12:34,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:35,032 INFO L225 Difference]: With dead ends: 26631 [2023-11-12 02:12:35,033 INFO L226 Difference]: Without dead ends: 17976 [2023-11-12 02:12:35,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:12:35,074 INFO L413 NwaCegarLoop]: 4222 mSDtfsCounter, 4656 mSDsluCounter, 12352 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 16574 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:35,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 16574 Invalid, 1080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 02:12:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17976 states. [2023-11-12 02:12:35,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17976 to 15113. [2023-11-12 02:12:35,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15113 states, 13373 states have (on average 1.5226949824272789) internal successors, (20363), 13504 states have internal predecessors, (20363), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2023-11-12 02:12:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15113 states to 15113 states and 23508 transitions. [2023-11-12 02:12:35,987 INFO L78 Accepts]: Start accepts. Automaton has 15113 states and 23508 transitions. Word has length 79 [2023-11-12 02:12:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:35,988 INFO L495 AbstractCegarLoop]: Abstraction has 15113 states and 23508 transitions. [2023-11-12 02:12:35,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:12:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 15113 states and 23508 transitions. [2023-11-12 02:12:36,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-12 02:12:36,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:36,035 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:36,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:12:36,036 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:36,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:36,036 INFO L85 PathProgramCache]: Analyzing trace with hash 372870207, now seen corresponding path program 1 times [2023-11-12 02:12:36,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:36,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604314810] [2023-11-12 02:12:36,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:36,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:36,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:12:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:12:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:36,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:12:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:36,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:36,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:12:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:36,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-12 02:12:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:36,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:12:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:36,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-12 02:12:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-12 02:12:36,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:36,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604314810] [2023-11-12 02:12:36,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604314810] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:12:36,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893956088] [2023-11-12 02:12:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:36,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:36,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:36,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:36,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:12:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:36,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:12:36,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:36,463 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-12 02:12:36,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:36,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893956088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:36,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:12:36,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-12 02:12:36,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017724835] [2023-11-12 02:12:36,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:36,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:36,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:36,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:36,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:12:36,466 INFO L87 Difference]: Start difference. First operand 15113 states and 23508 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:12:37,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:12:37,669 INFO L93 Difference]: Finished difference Result 40726 states and 62424 transitions. [2023-11-12 02:12:37,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:37,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2023-11-12 02:12:37,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:12:37,778 INFO L225 Difference]: With dead ends: 40726 [2023-11-12 02:12:37,779 INFO L226 Difference]: Without dead ends: 27746 [2023-11-12 02:12:37,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:12:37,817 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4140 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4140 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:12:37,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4140 Valid, 4386 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:12:37,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27746 states. [2023-11-12 02:12:39,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27746 to 27548. [2023-11-12 02:12:39,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27548 states, 24124 states have (on average 1.4909633559940307) internal successors, (35968), 24384 states have internal predecessors, (35968), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2023-11-12 02:12:39,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27548 states to 27548 states and 42087 transitions. [2023-11-12 02:12:39,404 INFO L78 Accepts]: Start accepts. Automaton has 27548 states and 42087 transitions. Word has length 129 [2023-11-12 02:12:39,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:12:39,404 INFO L495 AbstractCegarLoop]: Abstraction has 27548 states and 42087 transitions. [2023-11-12 02:12:39,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:12:39,405 INFO L276 IsEmpty]: Start isEmpty. Operand 27548 states and 42087 transitions. [2023-11-12 02:12:39,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-12 02:12:39,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:12:39,482 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:39,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:12:39,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:39,691 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:12:39,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:39,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1742173535, now seen corresponding path program 1 times [2023-11-12 02:12:39,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:39,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109306233] [2023-11-12 02:12:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:39,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:39,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:12:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:39,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-12 02:12:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:39,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-12 02:12:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:39,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:12:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:12:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:39,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-12 02:12:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:39,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-12 02:12:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:39,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-12 02:12:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-12 02:12:39,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:39,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109306233] [2023-11-12 02:12:39,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109306233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:12:39,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675739231] [2023-11-12 02:12:39,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:39,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:12:39,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:39,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:12:39,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd0d0611-4f06-4032-9f19-bdf7b350148d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:12:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:40,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:12:40,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:12:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-12 02:12:40,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:12:40,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675739231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:40,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:12:40,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-12 02:12:40,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191748616] [2023-11-12 02:12:40,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:40,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:40,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:40,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:40,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:12:40,172 INFO L87 Difference]: Start difference. First operand 27548 states and 42087 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)