./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.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_e3668172-b840-404f-8e4c-c5ad6312a337/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3668172-b840-404f-8e4c-c5ad6312a337/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_e3668172-b840-404f-8e4c-c5ad6312a337/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3668172-b840-404f-8e4c-c5ad6312a337/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3668172-b840-404f-8e4c-c5ad6312a337/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_e3668172-b840-404f-8e4c-c5ad6312a337/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 62eecaab9c99f0fa1c059eddca8c27b38035ebb18e1472cebfbee2848ace27b1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:05:24,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:05:24,188 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3668172-b840-404f-8e4c-c5ad6312a337/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:05:24,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:05:24,199 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:05:24,240 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:05:24,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:05:24,242 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:05:24,243 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:05:24,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:05:24,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:05:24,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:05:24,251 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:05:24,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:05:24,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:05:24,254 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:05:24,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:05:24,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:05:24,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:05:24,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:05:24,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:05:24,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:05:24,257 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:05:24,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:05:24,259 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:05:24,270 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:05:24,271 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:05:24,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:05:24,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:05:24,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:05:24,274 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:05:24,274 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:05:24,274 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:05:24,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:05:24,275 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:05:24,275 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:05:24,275 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:05:24,275 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:05:24,276 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:05:24,276 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_e3668172-b840-404f-8e4c-c5ad6312a337/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3668172-b840-404f-8e4c-c5ad6312a337/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62eecaab9c99f0fa1c059eddca8c27b38035ebb18e1472cebfbee2848ace27b1 [2023-11-12 02:05:24,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:05:24,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:05:24,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:05:24,667 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:05:24,668 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:05:24,669 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3668172-b840-404f-8e4c-c5ad6312a337/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c [2023-11-12 02:05:27,712 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:05:28,521 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:05:28,522 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3668172-b840-404f-8e4c-c5ad6312a337/sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c [2023-11-12 02:05:28,579 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3668172-b840-404f-8e4c-c5ad6312a337/bin/uautomizer-verify-uTZkv6EMXl/data/6e7d552d0/ae9ded30fe0d4329b51f26bac35ef1a2/FLAG358133dbe [2023-11-12 02:05:28,598 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3668172-b840-404f-8e4c-c5ad6312a337/bin/uautomizer-verify-uTZkv6EMXl/data/6e7d552d0/ae9ded30fe0d4329b51f26bac35ef1a2 [2023-11-12 02:05:28,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:05:28,602 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:05:28,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:05:28,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:05:28,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:05:28,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:05:28" (1/1) ... [2023-11-12 02:05:28,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552a028b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:28, skipping insertion in model container [2023-11-12 02:05:28,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:05:28" (1/1) ... [2023-11-12 02:05:28,945 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:05:31,364 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_e3668172-b840-404f-8e4c-c5ad6312a337/sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c[375709,375722] [2023-11-12 02:05:31,408 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_e3668172-b840-404f-8e4c-c5ad6312a337/sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c[383339,383352] [2023-11-12 02:05:31,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:05:31,637 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:05:32,823 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_e3668172-b840-404f-8e4c-c5ad6312a337/sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c[375709,375722] [2023-11-12 02:05:32,840 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_e3668172-b840-404f-8e4c-c5ad6312a337/sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c[383339,383352] [2023-11-12 02:05:32,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:05:32,948 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:05:32,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:32 WrapperNode [2023-11-12 02:05:32,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:05:32,950 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:05:32,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:05:32,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:05:32,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:32" (1/1) ... [2023-11-12 02:05:33,043 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:32" (1/1) ... [2023-11-12 02:05:33,545 INFO L138 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12748 [2023-11-12 02:05:33,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:05:33,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:05:33,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:05:33,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:05:33,571 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:32" (1/1) ... [2023-11-12 02:05:33,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:32" (1/1) ... [2023-11-12 02:05:33,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:32" (1/1) ... [2023-11-12 02:05:33,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:32" (1/1) ... [2023-11-12 02:05:33,995 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:32" (1/1) ... [2023-11-12 02:05:34,181 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:32" (1/1) ... [2023-11-12 02:05:34,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:32" (1/1) ... [2023-11-12 02:05:34,267 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:32" (1/1) ... [2023-11-12 02:05:34,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:05:34,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:05:34,357 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:05:34,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:05:34,361 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:32" (1/1) ... [2023-11-12 02:05:34,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:05:34,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3668172-b840-404f-8e4c-c5ad6312a337/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:05:34,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3668172-b840-404f-8e4c-c5ad6312a337/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:05:34,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3668172-b840-404f-8e4c-c5ad6312a337/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:05:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:05:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-12 02:05:34,494 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-12 02:05:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-12 02:05:34,494 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-12 02:05:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-12 02:05:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-12 02:05:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-12 02:05:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-12 02:05:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-12 02:05:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-12 02:05:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-12 02:05:34,498 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-12 02:05:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:05:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:05:34,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:05:34,661 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:05:34,663 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:05:45,146 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:05:45,180 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:05:45,180 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-12 02:05:45,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:05:45 BoogieIcfgContainer [2023-11-12 02:05:45,187 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:05:45,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:05:45,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:05:45,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:05:45,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:05:28" (1/3) ... [2023-11-12 02:05:45,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277b3bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:05:45, skipping insertion in model container [2023-11-12 02:05:45,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:05:32" (2/3) ... [2023-11-12 02:05:45,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277b3bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:05:45, skipping insertion in model container [2023-11-12 02:05:45,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:05:45" (3/3) ... [2023-11-12 02:05:45,201 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.04.cil-1.c [2023-11-12 02:05:45,223 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:05:45,223 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:05:45,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:05:45,341 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;@71e5ae88, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:05:45,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 02:05:45,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 2370 states, 2343 states have (on average 1.8523260776781905) internal successors, (4340), 2346 states have internal predecessors, (4340), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-12 02:05:45,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:05:45,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:05:45,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:05:45,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:05:45,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:45,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1995785756, now seen corresponding path program 1 times [2023-11-12 02:05:45,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:45,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401244568] [2023-11-12 02:05:45,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:45,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:45,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:05:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:45,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:05:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:45,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:05:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:45,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:05:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:45,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:05:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:45,918 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 02:05:45,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:45,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401244568] [2023-11-12 02:05:45,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401244568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:05:45,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:05:45,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:05:45,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320806273] [2023-11-12 02:05:45,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:05:45,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:05:45,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:45,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:05:45,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:05:45,967 INFO L87 Difference]: Start difference. First operand has 2370 states, 2343 states have (on average 1.8523260776781905) internal successors, (4340), 2346 states have internal predecessors, (4340), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:05:47,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:05:47,055 INFO L93 Difference]: Finished difference Result 4788 states and 8834 transitions. [2023-11-12 02:05:47,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:05:47,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2023-11-12 02:05:47,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:05:47,086 INFO L225 Difference]: With dead ends: 4788 [2023-11-12 02:05:47,087 INFO L226 Difference]: Without dead ends: 2357 [2023-11-12 02:05:47,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:05:47,100 INFO L413 NwaCegarLoop]: 4199 mSDtfsCounter, 443 mSDsluCounter, 12267 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 16466 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:05:47,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 16466 Invalid, 460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 02:05:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2023-11-12 02:05:47,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2303. [2023-11-12 02:05:47,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2277 states have (on average 1.8414580588493632) internal successors, (4193), 2279 states have internal predecessors, (4193), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-12 02:05:47,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 4229 transitions. [2023-11-12 02:05:47,263 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 4229 transitions. Word has length 90 [2023-11-12 02:05:47,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:05:47,264 INFO L495 AbstractCegarLoop]: Abstraction has 2303 states and 4229 transitions. [2023-11-12 02:05:47,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:05:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 4229 transitions. [2023-11-12 02:05:47,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:05:47,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:05:47,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:05:47,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:05:47,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:05:47,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:47,280 INFO L85 PathProgramCache]: Analyzing trace with hash -937947678, now seen corresponding path program 1 times [2023-11-12 02:05:47,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:47,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411639648] [2023-11-12 02:05:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:47,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:05:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:05:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:47,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:05:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:47,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:05:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:47,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:05:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:47,582 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 02:05:47,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:47,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411639648] [2023-11-12 02:05:47,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411639648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:05:47,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:05:47,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:05:47,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109106033] [2023-11-12 02:05:47,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:05:47,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:05:47,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:47,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:05:47,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:05:47,588 INFO L87 Difference]: Start difference. First operand 2303 states and 4229 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 02:05:49,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:05:49,243 INFO L93 Difference]: Finished difference Result 2753 states and 4926 transitions. [2023-11-12 02:05:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:05:49,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2023-11-12 02:05:49,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:05:49,262 INFO L225 Difference]: With dead ends: 2753 [2023-11-12 02:05:49,262 INFO L226 Difference]: Without dead ends: 2583 [2023-11-12 02:05:49,264 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 02:05:49,266 INFO L413 NwaCegarLoop]: 4116 mSDtfsCounter, 4603 mSDsluCounter, 12334 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 16450 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:05:49,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4614 Valid, 16450 Invalid, 997 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [76 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 02:05:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2023-11-12 02:05:49,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 2476. [2023-11-12 02:05:49,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2430 states have (on average 1.8213991769547324) internal successors, (4426), 2433 states have internal predecessors, (4426), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-11-12 02:05:49,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4491 transitions. [2023-11-12 02:05:49,358 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4491 transitions. Word has length 90 [2023-11-12 02:05:49,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:05:49,359 INFO L495 AbstractCegarLoop]: Abstraction has 2476 states and 4491 transitions. [2023-11-12 02:05:49,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 02:05:49,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4491 transitions. [2023-11-12 02:05:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:05:49,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:05:49,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:05:49,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:05:49,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:05:49,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:49,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2112607130, now seen corresponding path program 1 times [2023-11-12 02:05:49,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:49,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500065006] [2023-11-12 02:05:49,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:49,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:49,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:05:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:49,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:05:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:05:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:49,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:05:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:49,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:05:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:49,646 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 02:05:49,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:49,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500065006] [2023-11-12 02:05:49,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500065006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:05:49,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:05:49,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:05:49,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60574115] [2023-11-12 02:05:49,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:05:49,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:05:49,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:49,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:05:49,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:05:49,654 INFO L87 Difference]: Start difference. First operand 2476 states and 4491 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 02:05:51,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:05:51,727 INFO L93 Difference]: Finished difference Result 3156 states and 5538 transitions. [2023-11-12 02:05:51,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:05:51,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2023-11-12 02:05:51,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:05:51,747 INFO L225 Difference]: With dead ends: 3156 [2023-11-12 02:05:51,747 INFO L226 Difference]: Without dead ends: 2813 [2023-11-12 02:05:51,754 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 02:05:51,755 INFO L413 NwaCegarLoop]: 4231 mSDtfsCounter, 4606 mSDsluCounter, 16725 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 20956 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:05:51,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 20956 Invalid, 1524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 02:05:51,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2023-11-12 02:05:51,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2638. [2023-11-12 02:05:51,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2572 states have (on average 1.802877138413686) internal successors, (4637), 2576 states have internal predecessors, (4637), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-11-12 02:05:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 4730 transitions. [2023-11-12 02:05:51,873 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 4730 transitions. Word has length 90 [2023-11-12 02:05:51,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:05:51,874 INFO L495 AbstractCegarLoop]: Abstraction has 2638 states and 4730 transitions. [2023-11-12 02:05:51,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 02:05:51,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 4730 transitions. [2023-11-12 02:05:51,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:05:51,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:05:51,876 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:05:51,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:05:51,877 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:05:51,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:51,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1225384284, now seen corresponding path program 1 times [2023-11-12 02:05:51,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:51,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332820634] [2023-11-12 02:05:51,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:51,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:52,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:05:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:52,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:05:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:52,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:05:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:52,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:05:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:52,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:05:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:52,271 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 02:05:52,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:52,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332820634] [2023-11-12 02:05:52,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332820634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:05:52,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:05:52,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:05:52,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966132192] [2023-11-12 02:05:52,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:05:52,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:05:52,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:52,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:05:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:05:52,276 INFO L87 Difference]: Start difference. First operand 2638 states and 4730 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 02:05:54,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:05:54,024 INFO L93 Difference]: Finished difference Result 3749 states and 6435 transitions. [2023-11-12 02:05:54,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:05:54,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2023-11-12 02:05:54,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:05:54,047 INFO L225 Difference]: With dead ends: 3749 [2023-11-12 02:05:54,048 INFO L226 Difference]: Without dead ends: 3244 [2023-11-12 02:05:54,055 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 02:05:54,063 INFO L413 NwaCegarLoop]: 4126 mSDtfsCounter, 4654 mSDsluCounter, 16435 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4665 SdHoareTripleChecker+Valid, 20561 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:05:54,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4665 Valid, 20561 Invalid, 1318 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 02:05:54,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2023-11-12 02:05:54,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 2963. [2023-11-12 02:05:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2963 states, 2857 states have (on average 1.7710885544277213) internal successors, (5060), 2863 states have internal predecessors, (5060), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-11-12 02:05:54,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 5213 transitions. [2023-11-12 02:05:54,221 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 5213 transitions. Word has length 90 [2023-11-12 02:05:54,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:05:54,222 INFO L495 AbstractCegarLoop]: Abstraction has 2963 states and 5213 transitions. [2023-11-12 02:05:54,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 02:05:54,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 5213 transitions. [2023-11-12 02:05:54,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:05:54,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:05:54,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:05:54,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:05:54,230 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:05:54,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:54,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1158540454, now seen corresponding path program 1 times [2023-11-12 02:05:54,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:54,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592376583] [2023-11-12 02:05:54,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:54,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:54,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:05:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:54,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:05:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:05:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:05:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:54,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:05:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:54,461 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 02:05:54,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:54,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592376583] [2023-11-12 02:05:54,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592376583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:05:54,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:05:54,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:05:54,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14483417] [2023-11-12 02:05:54,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:05:54,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:05:54,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:54,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:05:54,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:05:54,470 INFO L87 Difference]: Start difference. First operand 2963 states and 5213 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 02:05:56,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:05:56,560 INFO L93 Difference]: Finished difference Result 4894 states and 8162 transitions. [2023-11-12 02:05:56,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:05:56,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2023-11-12 02:05:56,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:05:56,588 INFO L225 Difference]: With dead ends: 4894 [2023-11-12 02:05:56,589 INFO L226 Difference]: Without dead ends: 4064 [2023-11-12 02:05:56,593 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 02:05:56,593 INFO L413 NwaCegarLoop]: 4229 mSDtfsCounter, 4604 mSDsluCounter, 16725 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4615 SdHoareTripleChecker+Valid, 20954 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:05:56,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4615 Valid, 20954 Invalid, 1515 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 02:05:56,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2023-11-12 02:05:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 3614. [2023-11-12 02:05:56,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3428 states have (on average 1.7228704784130688) internal successors, (5906), 3438 states have internal predecessors, (5906), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2023-11-12 02:05:56,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 6185 transitions. [2023-11-12 02:05:56,829 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 6185 transitions. Word has length 90 [2023-11-12 02:05:56,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:05:56,830 INFO L495 AbstractCegarLoop]: Abstraction has 3614 states and 6185 transitions. [2023-11-12 02:05:56,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 02:05:56,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 6185 transitions. [2023-11-12 02:05:56,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:05:56,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:05:56,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:05:56,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:05:56,842 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:05:56,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:05:56,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1235441252, now seen corresponding path program 1 times [2023-11-12 02:05:56,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:05:56,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336759886] [2023-11-12 02:05:56,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:05:56,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:05:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:56,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:05:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:56,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:05:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:05:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:57,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:05:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:57,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:05:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:05:57,066 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 02:05:57,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:05:57,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336759886] [2023-11-12 02:05:57,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336759886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:05:57,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:05:57,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:05:57,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883766265] [2023-11-12 02:05:57,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:05:57,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:05:57,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:05:57,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:05:57,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:05:57,071 INFO L87 Difference]: Start difference. First operand 3614 states and 6185 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 02:05:59,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:05:59,583 INFO L93 Difference]: Finished difference Result 7696 states and 12390 transitions. [2023-11-12 02:05:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:05:59,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2023-11-12 02:05:59,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:05:59,638 INFO L225 Difference]: With dead ends: 7696 [2023-11-12 02:05:59,638 INFO L226 Difference]: Without dead ends: 6215 [2023-11-12 02:05:59,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:05:59,649 INFO L413 NwaCegarLoop]: 4227 mSDtfsCounter, 4774 mSDsluCounter, 16717 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4790 SdHoareTripleChecker+Valid, 20944 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:05:59,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4790 Valid, 20944 Invalid, 1483 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-12 02:05:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2023-11-12 02:06:00,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 4906. [2023-11-12 02:06:00,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4906 states, 4568 states have (on average 1.665061295971979) internal successors, (7606), 4586 states have internal predecessors, (7606), 218 states have call successors, (218), 102 states have call predecessors, (218), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2023-11-12 02:06:00,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4906 states to 4906 states and 8139 transitions. [2023-11-12 02:06:00,072 INFO L78 Accepts]: Start accepts. Automaton has 4906 states and 8139 transitions. Word has length 90 [2023-11-12 02:06:00,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:00,073 INFO L495 AbstractCegarLoop]: Abstraction has 4906 states and 8139 transitions. [2023-11-12 02:06:00,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 02:06:00,074 INFO L276 IsEmpty]: Start isEmpty. Operand 4906 states and 8139 transitions. [2023-11-12 02:06:00,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:06:00,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:00,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:00,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:06:00,081 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:00,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:00,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1151068254, now seen corresponding path program 1 times [2023-11-12 02:06:00,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:00,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22907026] [2023-11-12 02:06:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:00,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:00,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:06:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:06:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:00,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:06:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:00,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:06:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:00,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:06:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:00,355 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 02:06:00,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:00,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22907026] [2023-11-12 02:06:00,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22907026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:00,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:00,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:06:00,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098557451] [2023-11-12 02:06:00,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:00,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:06:00,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:00,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:06:00,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:06:00,360 INFO L87 Difference]: Start difference. First operand 4906 states and 8139 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 02:06:03,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:03,031 INFO L93 Difference]: Finished difference Result 12534 states and 19766 transitions. [2023-11-12 02:06:03,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:06:03,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2023-11-12 02:06:03,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:03,091 INFO L225 Difference]: With dead ends: 12534 [2023-11-12 02:06:03,091 INFO L226 Difference]: Without dead ends: 9761 [2023-11-12 02:06:03,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:06:03,106 INFO L413 NwaCegarLoop]: 4226 mSDtfsCounter, 4631 mSDsluCounter, 16714 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4641 SdHoareTripleChecker+Valid, 20940 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:03,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4641 Valid, 20940 Invalid, 1717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-12 02:06:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2023-11-12 02:06:03,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 7399. [2023-11-12 02:06:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7399 states, 6765 states have (on average 1.608277900960828) internal successors, (10880), 6799 states have internal predecessors, (10880), 402 states have call successors, (402), 198 states have call predecessors, (402), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2023-11-12 02:06:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7399 states to 7399 states and 11959 transitions. [2023-11-12 02:06:03,566 INFO L78 Accepts]: Start accepts. Automaton has 7399 states and 11959 transitions. Word has length 90 [2023-11-12 02:06:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:03,566 INFO L495 AbstractCegarLoop]: Abstraction has 7399 states and 11959 transitions. [2023-11-12 02:06:03,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 02:06:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 7399 states and 11959 transitions. [2023-11-12 02:06:03,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:06:03,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:03,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:03,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:06:03,577 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:03,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:03,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1643694428, now seen corresponding path program 1 times [2023-11-12 02:06:03,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:03,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961850670] [2023-11-12 02:06:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:03,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:03,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:06:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:03,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:06:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:03,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:06:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:03,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:06:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:03,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:06:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:03,814 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 02:06:03,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:03,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961850670] [2023-11-12 02:06:03,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961850670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:03,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:03,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:06:03,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505269902] [2023-11-12 02:06:03,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:03,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:06:03,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:03,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:06:03,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:06:03,819 INFO L87 Difference]: Start difference. First operand 7399 states and 11959 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 02:06:06,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:06,136 INFO L93 Difference]: Finished difference Result 21673 states and 33860 transitions. [2023-11-12 02:06:06,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:06:06,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2023-11-12 02:06:06,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:06,215 INFO L225 Difference]: With dead ends: 21673 [2023-11-12 02:06:06,216 INFO L226 Difference]: Without dead ends: 16407 [2023-11-12 02:06:06,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:06:06,244 INFO L413 NwaCegarLoop]: 4227 mSDtfsCounter, 4694 mSDsluCounter, 16717 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4710 SdHoareTripleChecker+Valid, 20944 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:06,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4710 Valid, 20944 Invalid, 1457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-12 02:06:06,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16407 states. [2023-11-12 02:06:07,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16407 to 12448. [2023-11-12 02:06:07,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12448 states, 11238 states have (on average 1.5634454529275672) internal successors, (17570), 11304 states have internal predecessors, (17570), 754 states have call successors, (754), 390 states have call predecessors, (754), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2023-11-12 02:06:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12448 states to 12448 states and 19871 transitions. [2023-11-12 02:06:07,263 INFO L78 Accepts]: Start accepts. Automaton has 12448 states and 19871 transitions. Word has length 90 [2023-11-12 02:06:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:07,263 INFO L495 AbstractCegarLoop]: Abstraction has 12448 states and 19871 transitions. [2023-11-12 02:06:07,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 02:06:07,264 INFO L276 IsEmpty]: Start isEmpty. Operand 12448 states and 19871 transitions. [2023-11-12 02:06:07,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-12 02:06:07,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:07,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:06:07,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:06:07,281 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:07,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:07,283 INFO L85 PathProgramCache]: Analyzing trace with hash -689754270, now seen corresponding path program 1 times [2023-11-12 02:06:07,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:07,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127926716] [2023-11-12 02:06:07,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:07,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:07,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-12 02:06:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:06:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:06:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:07,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:06:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:07,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:06:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:07,492 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 02:06:07,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:07,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127926716] [2023-11-12 02:06:07,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127926716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:07,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:07,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:06:07,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995103639] [2023-11-12 02:06:07,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:07,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:06:07,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:07,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:06:07,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:06:07,496 INFO L87 Difference]: Start difference. First operand 12448 states and 19871 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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)