./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu --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 d659e8678e554595f4e384a4607241da3abd2c1673f83f24796966e0172bfb33 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:35:34,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:35:34,357 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:35:34,364 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:35:34,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:35:34,406 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:35:34,407 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:35:34,407 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:35:34,408 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:35:34,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:35:34,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:35:34,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:35:34,419 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:35:34,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:35:34,421 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:35:34,422 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:35:34,422 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:35:34,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:35:34,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:35:34,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:35:34,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:35:34,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:35:34,426 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:35:34,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:35:34,426 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:35:34,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:35:34,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:35:34,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:35:34,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:34,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:35:34,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:35:34,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:35:34,433 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:35:34,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:35:34,434 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:35:34,434 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:35:34,434 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:35:34,435 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:35:34,435 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:35:34,435 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_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d659e8678e554595f4e384a4607241da3abd2c1673f83f24796966e0172bfb33 [2023-11-19 07:35:34,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:34,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:34,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:34,805 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:34,806 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:34,807 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c [2023-11-19 07:35:38,270 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:39,186 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:39,187 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c [2023-11-19 07:35:39,267 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu/data/c794e58b9/15de25c063054848a8b22c0356f9a3b0/FLAG8194d07d3 [2023-11-19 07:35:39,290 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu/data/c794e58b9/15de25c063054848a8b22c0356f9a3b0 [2023-11-19 07:35:39,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:39,300 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:39,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:39,303 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:39,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:39,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:39" (1/1) ... [2023-11-19 07:35:39,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371b8942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:39, skipping insertion in model container [2023-11-19 07:35:39,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:39" (1/1) ... [2023-11-19 07:35:39,715 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:42,126 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_28b59130-c106-4e44-a696-10de1e188229/sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c[377612,377625] [2023-11-19 07:35:42,161 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_28b59130-c106-4e44-a696-10de1e188229/sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c[383339,383352] [2023-11-19 07:35:42,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:42,516 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:43,810 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_28b59130-c106-4e44-a696-10de1e188229/sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c[377612,377625] [2023-11-19 07:35:43,821 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_28b59130-c106-4e44-a696-10de1e188229/sv-benchmarks/c/combinations/Problem05_label47+token_ring.10.cil-2.c[383339,383352] [2023-11-19 07:35:43,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:43,962 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:43,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:43 WrapperNode [2023-11-19 07:35:43,963 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:43,964 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:43,964 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:43,964 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:43,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:43" (1/1) ... [2023-11-19 07:35:44,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:43" (1/1) ... [2023-11-19 07:35:44,627 INFO L138 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13108 [2023-11-19 07:35:44,629 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:44,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:44,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:44,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:44,642 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:43" (1/1) ... [2023-11-19 07:35:44,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:43" (1/1) ... [2023-11-19 07:35:44,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:43" (1/1) ... [2023-11-19 07:35:44,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:43" (1/1) ... [2023-11-19 07:35:45,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:43" (1/1) ... [2023-11-19 07:35:45,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:43" (1/1) ... [2023-11-19 07:35:45,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:43" (1/1) ... [2023-11-19 07:35:45,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:43" (1/1) ... [2023-11-19 07:35:45,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:45,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:45,241 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:45,241 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:45,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:43" (1/1) ... [2023-11-19 07:35:45,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:45,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:45,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:45,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28b59130-c106-4e44-a696-10de1e188229/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:45,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:35:45,329 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-19 07:35:45,329 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-19 07:35:45,330 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-19 07:35:45,330 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-19 07:35:45,330 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-19 07:35:45,330 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-19 07:35:45,330 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-19 07:35:45,331 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-19 07:35:45,333 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-19 07:35:45,333 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-19 07:35:45,333 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-19 07:35:45,333 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-19 07:35:45,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:35:45,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:45,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:45,528 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:45,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:56,565 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:56,614 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:56,614 INFO L302 CfgBuilder]: Removed 14 assume(true) statements. [2023-11-19 07:35:56,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:56 BoogieIcfgContainer [2023-11-19 07:35:56,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:56,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:56,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:56,651 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:56,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:39" (1/3) ... [2023-11-19 07:35:56,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fe2ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:56, skipping insertion in model container [2023-11-19 07:35:56,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:43" (2/3) ... [2023-11-19 07:35:56,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fe2ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:56, skipping insertion in model container [2023-11-19 07:35:56,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:56" (3/3) ... [2023-11-19 07:35:56,658 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.10.cil-2.c [2023-11-19 07:35:56,687 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:56,687 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:35:56,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:56,834 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;@506b9ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:56,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:35:56,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 2526 states, 2493 states have (on average 1.8419574809466506) internal successors, (4592), 2496 states have internal predecessors, (4592), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:35:56,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-19 07:35:56,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:56,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:56,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:56,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:56,891 INFO L85 PathProgramCache]: Analyzing trace with hash -2034921809, now seen corresponding path program 1 times [2023-11-19 07:35:56,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:56,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110726157] [2023-11-19 07:35:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:56,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:57,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:35:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:57,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 07:35:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:57,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-19 07:35:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:57,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-19 07:35:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-19 07:35:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:57,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:57,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110726157] [2023-11-19 07:35:57,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110726157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:57,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:57,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:35:57,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210596560] [2023-11-19 07:35:57,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:57,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:57,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:58,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:58,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:58,053 INFO L87 Difference]: Start difference. First operand has 2526 states, 2493 states have (on average 1.8419574809466506) internal successors, (4592), 2496 states have internal predecessors, (4592), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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) [2023-11-19 07:36:00,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:00,700 INFO L93 Difference]: Finished difference Result 5162 states and 9468 transitions. [2023-11-19 07:36:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:36:00,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 156 [2023-11-19 07:36:00,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:00,757 INFO L225 Difference]: With dead ends: 5162 [2023-11-19 07:36:00,757 INFO L226 Difference]: Without dead ends: 2579 [2023-11-19 07:36:00,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:36:00,780 INFO L413 NwaCegarLoop]: 4337 mSDtfsCounter, 899 mSDsluCounter, 12435 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 16772 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:00,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 16772 Invalid, 931 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [52 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-19 07:36:00,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2023-11-19 07:36:00,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2459. [2023-11-19 07:36:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 2427 states have (on average 1.826534816646065) internal successors, (4433), 2429 states have internal predecessors, (4433), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:36:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 4481 transitions. [2023-11-19 07:36:00,998 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 4481 transitions. Word has length 156 [2023-11-19 07:36:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:00,999 INFO L495 AbstractCegarLoop]: Abstraction has 2459 states and 4481 transitions. [2023-11-19 07:36:01,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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) [2023-11-19 07:36:01,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 4481 transitions. [2023-11-19 07:36:01,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-19 07:36:01,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:01,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:01,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:36:01,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:01,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:01,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1833490989, now seen corresponding path program 1 times [2023-11-19 07:36:01,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:01,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962095385] [2023-11-19 07:36:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:01,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:01,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:36:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:01,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 07:36:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:01,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-19 07:36:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-19 07:36:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:01,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-19 07:36:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:01,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:01,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962095385] [2023-11-19 07:36:01,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962095385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:01,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:01,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:36:01,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618308611] [2023-11-19 07:36:01,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:01,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:01,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:01,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:01,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:01,690 INFO L87 Difference]: Start difference. First operand 2459 states and 4481 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-19 07:36:06,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:06,893 INFO L93 Difference]: Finished difference Result 3374 states and 5955 transitions. [2023-11-19 07:36:06,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:36:06,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2023-11-19 07:36:06,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:06,917 INFO L225 Difference]: With dead ends: 3374 [2023-11-19 07:36:06,918 INFO L226 Difference]: Without dead ends: 3054 [2023-11-19 07:36:06,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:36:06,925 INFO L413 NwaCegarLoop]: 4462 mSDtfsCounter, 5244 mSDsluCounter, 17549 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5261 SdHoareTripleChecker+Valid, 22011 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:06,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5261 Valid, 22011 Invalid, 3239 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 3177 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-19 07:36:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2023-11-19 07:36:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 2797. [2023-11-19 07:36:07,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2736 states have (on average 1.7978801169590644) internal successors, (4919), 2740 states have internal predecessors, (4919), 45 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2023-11-19 07:36:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 5016 transitions. [2023-11-19 07:36:07,059 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 5016 transitions. Word has length 156 [2023-11-19 07:36:07,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:07,061 INFO L495 AbstractCegarLoop]: Abstraction has 2797 states and 5016 transitions. [2023-11-19 07:36:07,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-19 07:36:07,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 5016 transitions. [2023-11-19 07:36:07,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-19 07:36:07,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:07,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:07,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:36:07,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:07,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:07,072 INFO L85 PathProgramCache]: Analyzing trace with hash 216050539, now seen corresponding path program 1 times [2023-11-19 07:36:07,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:07,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791668984] [2023-11-19 07:36:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:07,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:36:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 07:36:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:07,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-19 07:36:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:07,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-19 07:36:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:07,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-19 07:36:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:07,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:07,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:07,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791668984] [2023-11-19 07:36:07,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791668984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:07,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:07,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:36:07,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293942602] [2023-11-19 07:36:07,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:07,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:07,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:07,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:07,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:07,593 INFO L87 Difference]: Start difference. First operand 2797 states and 5016 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-19 07:36:12,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:12,102 INFO L93 Difference]: Finished difference Result 4542 states and 7800 transitions. [2023-11-19 07:36:12,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:36:12,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2023-11-19 07:36:12,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:12,127 INFO L225 Difference]: With dead ends: 4542 [2023-11-19 07:36:12,128 INFO L226 Difference]: Without dead ends: 3886 [2023-11-19 07:36:12,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:36:12,133 INFO L413 NwaCegarLoop]: 4406 mSDtfsCounter, 5285 mSDsluCounter, 17474 mSDsCounter, 0 mSdLazyCounter, 2868 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5302 SdHoareTripleChecker+Valid, 21880 SdHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:12,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5302 Valid, 21880 Invalid, 2938 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 2868 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-19 07:36:12,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2023-11-19 07:36:12,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3421. [2023-11-19 07:36:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3421 states, 3308 states have (on average 1.7533252720677146) internal successors, (5800), 3314 states have internal predecessors, (5800), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2023-11-19 07:36:12,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 5983 transitions. [2023-11-19 07:36:12,316 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 5983 transitions. Word has length 156 [2023-11-19 07:36:12,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:12,316 INFO L495 AbstractCegarLoop]: Abstraction has 3421 states and 5983 transitions. [2023-11-19 07:36:12,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-19 07:36:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 5983 transitions. [2023-11-19 07:36:12,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-19 07:36:12,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:12,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:12,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:36:12,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:12,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:12,324 INFO L85 PathProgramCache]: Analyzing trace with hash 579517037, now seen corresponding path program 1 times [2023-11-19 07:36:12,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:12,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922797499] [2023-11-19 07:36:12,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:12,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:36:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:12,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 07:36:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:12,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-19 07:36:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:12,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-19 07:36:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:12,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-19 07:36:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:12,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:12,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922797499] [2023-11-19 07:36:12,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922797499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:12,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:12,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:36:12,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331656595] [2023-11-19 07:36:12,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:12,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:12,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:12,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:12,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:12,763 INFO L87 Difference]: Start difference. First operand 3421 states and 5983 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-19 07:36:17,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:36:17,432 INFO L93 Difference]: Finished difference Result 6828 states and 11399 transitions. [2023-11-19 07:36:17,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:36:17,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2023-11-19 07:36:17,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:36:17,467 INFO L225 Difference]: With dead ends: 6828 [2023-11-19 07:36:17,467 INFO L226 Difference]: Without dead ends: 5548 [2023-11-19 07:36:17,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:36:17,475 INFO L413 NwaCegarLoop]: 4457 mSDtfsCounter, 5244 mSDsluCounter, 17549 mSDsCounter, 0 mSdLazyCounter, 3157 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5261 SdHoareTripleChecker+Valid, 22006 SdHoareTripleChecker+Invalid, 3221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:36:17,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5261 Valid, 22006 Invalid, 3221 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 3157 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-19 07:36:17,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2023-11-19 07:36:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 4671. [2023-11-19 07:36:17,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4671 states, 4454 states have (on average 1.698248765154917) internal successors, (7564), 4464 states have internal predecessors, (7564), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2023-11-19 07:36:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4671 states to 4671 states and 7925 transitions. [2023-11-19 07:36:17,705 INFO L78 Accepts]: Start accepts. Automaton has 4671 states and 7925 transitions. Word has length 156 [2023-11-19 07:36:17,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:17,707 INFO L495 AbstractCegarLoop]: Abstraction has 4671 states and 7925 transitions. [2023-11-19 07:36:17,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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) [2023-11-19 07:36:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4671 states and 7925 transitions. [2023-11-19 07:36:17,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-19 07:36:17,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:17,712 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:17,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:36:17,713 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:17,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:17,714 INFO L85 PathProgramCache]: Analyzing trace with hash 868336427, now seen corresponding path program 1 times [2023-11-19 07:36:17,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:17,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673927998] [2023-11-19 07:36:17,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:17,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:17,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-19 07:36:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 07:36:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:18,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-19 07:36:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-19 07:36:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:18,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-19 07:36:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:18,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:18,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673927998] [2023-11-19 07:36:18,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673927998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:18,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:18,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:36:18,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089612754] [2023-11-19 07:36:18,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:18,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:18,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:18,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:18,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:18,083 INFO L87 Difference]: Start difference. First operand 4671 states and 7925 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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)