./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI --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 a50787eee309f695181bc37c4f84940bb8fed2cb76457a2c563ef0feb29ebac8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:52:06,186 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:52:06,270 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:52:06,280 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:52:06,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:52:06,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:52:06,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:52:06,322 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:52:06,324 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:52:06,328 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:52:06,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:52:06,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:52:06,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:52:06,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:52:06,332 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:52:06,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:52:06,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:52:06,333 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:52:06,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:52:06,334 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:52:06,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:52:06,335 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:52:06,335 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:52:06,336 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:52:06,336 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:52:06,336 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:52:06,337 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:52:06,338 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:52:06,352 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:52:06,352 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:52:06,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:52:06,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:52:06,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:52:06,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:52:06,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:52:06,355 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:52:06,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:52:06,356 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:52:06,356 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:52:06,356 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:52:06,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:52:06,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:52:06,358 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_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50787eee309f695181bc37c4f84940bb8fed2cb76457a2c563ef0feb29ebac8 [2023-11-24 21:52:06,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:52:06,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:52:06,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:52:06,643 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:52:06,644 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:52:06,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c [2023-11-24 21:52:09,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:52:10,643 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:52:10,644 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c262d3-037e-45ac-a35a-d4f8ff34b74c/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c [2023-11-24 21:52:10,713 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI/data/9fb15d78f/a4c69b865f154ee7a8fdc466d044b432/FLAG7307dba1d [2023-11-24 21:52:10,728 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI/data/9fb15d78f/a4c69b865f154ee7a8fdc466d044b432 [2023-11-24 21:52:10,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:52:10,733 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:52:10,734 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:52:10,734 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:52:10,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:52:10,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:52:10" (1/1) ... [2023-11-24 21:52:10,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bea20b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:10, skipping insertion in model container [2023-11-24 21:52:10,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:52:10" (1/1) ... [2023-11-24 21:52:11,104 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:52:13,399 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_92c262d3-037e-45ac-a35a-d4f8ff34b74c/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c[377340,377353] [2023-11-24 21:52:13,437 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_92c262d3-037e-45ac-a35a-d4f8ff34b74c/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c[383339,383352] [2023-11-24 21:52:13,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:52:13,745 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:52:15,006 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_92c262d3-037e-45ac-a35a-d4f8ff34b74c/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c[377340,377353] [2023-11-24 21:52:15,016 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_92c262d3-037e-45ac-a35a-d4f8ff34b74c/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c[383339,383352] [2023-11-24 21:52:15,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:52:15,150 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:52:15,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:15 WrapperNode [2023-11-24 21:52:15,151 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:52:15,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:52:15,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:52:15,153 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:52:15,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:15" (1/1) ... [2023-11-24 21:52:15,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:15" (1/1) ... [2023-11-24 21:52:15,863 INFO L138 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12988 [2023-11-24 21:52:15,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:52:15,864 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:52:15,864 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:52:15,864 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:52:15,876 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:15" (1/1) ... [2023-11-24 21:52:15,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:15" (1/1) ... [2023-11-24 21:52:15,984 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:15" (1/1) ... [2023-11-24 21:52:16,054 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-24 21:52:16,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:15" (1/1) ... [2023-11-24 21:52:16,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:15" (1/1) ... [2023-11-24 21:52:16,322 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:15" (1/1) ... [2023-11-24 21:52:16,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:15" (1/1) ... [2023-11-24 21:52:16,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:15" (1/1) ... [2023-11-24 21:52:16,426 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:15" (1/1) ... [2023-11-24 21:52:16,483 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:52:16,484 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:52:16,484 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:52:16,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:52:16,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:15" (1/1) ... [2023-11-24 21:52:16,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:52:16,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:52:16,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:52:16,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92c262d3-037e-45ac-a35a-d4f8ff34b74c/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:52:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:52:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-24 21:52:16,571 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-24 21:52:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-24 21:52:16,573 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-24 21:52:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-24 21:52:16,575 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-24 21:52:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-24 21:52:16,575 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-24 21:52:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-24 21:52:16,575 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-24 21:52:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-24 21:52:16,576 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-24 21:52:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:52:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:52:16,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:52:16,762 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:52:16,764 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:52:26,715 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:52:26,899 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:52:26,900 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-24 21:52:26,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:26 BoogieIcfgContainer [2023-11-24 21:52:26,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:52:26,907 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:52:26,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:52:26,911 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:52:26,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:52:10" (1/3) ... [2023-11-24 21:52:26,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1d9b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:52:26, skipping insertion in model container [2023-11-24 21:52:26,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:52:15" (2/3) ... [2023-11-24 21:52:26,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1d9b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:52:26, skipping insertion in model container [2023-11-24 21:52:26,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:52:26" (3/3) ... [2023-11-24 21:52:26,917 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.08.cil-1.c [2023-11-24 21:52:26,939 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:52:26,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:52:27,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:52:27,092 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;@2d7bbf52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:52:27,093 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 21:52:27,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 2379 states, 2348 states have (on average 1.8794718909710393) internal successors, (4413), 2351 states have internal predecessors, (4413), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-24 21:52:27,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-24 21:52:27,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:27,149 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] [2023-11-24 21:52:27,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:52:27,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:27,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2060137260, now seen corresponding path program 1 times [2023-11-24 21:52:27,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:27,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169967802] [2023-11-24 21:52:27,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:27,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:27,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:52:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:27,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 21:52:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:27,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-24 21:52:27,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:27,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-24 21:52:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:27,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:52:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:27,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:27,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169967802] [2023-11-24 21:52:27,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169967802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:27,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:27,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:52:27,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869571811] [2023-11-24 21:52:27,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:27,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:52:27,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:27,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:52:27,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:52:27,888 INFO L87 Difference]: Start difference. First operand has 2379 states, 2348 states have (on average 1.8794718909710393) internal successors, (4413), 2351 states have internal predecessors, (4413), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-11-24 21:52:30,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:30,080 INFO L93 Difference]: Finished difference Result 4844 states and 9066 transitions. [2023-11-24 21:52:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:52:30,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 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 121 [2023-11-24 21:52:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:30,118 INFO L225 Difference]: With dead ends: 4844 [2023-11-24 21:52:30,118 INFO L226 Difference]: Without dead ends: 2465 [2023-11-24 21:52:30,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:52:30,133 INFO L413 NwaCegarLoop]: 4181 mSDtfsCounter, 695 mSDsluCounter, 12116 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 16297 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:30,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 16297 Invalid, 806 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [48 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 21:52:30,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2023-11-24 21:52:30,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2375. [2023-11-24 21:52:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 2345 states have (on average 1.8426439232409382) internal successors, (4321), 2347 states have internal predecessors, (4321), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-24 21:52:30,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 4365 transitions. [2023-11-24 21:52:30,362 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 4365 transitions. Word has length 121 [2023-11-24 21:52:30,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:30,363 INFO L495 AbstractCegarLoop]: Abstraction has 2375 states and 4365 transitions. [2023-11-24 21:52:30,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-11-24 21:52:30,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 4365 transitions. [2023-11-24 21:52:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-24 21:52:30,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:30,373 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] [2023-11-24 21:52:30,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:52:30,374 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:52:30,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:30,375 INFO L85 PathProgramCache]: Analyzing trace with hash 58250990, now seen corresponding path program 1 times [2023-11-24 21:52:30,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:30,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884537831] [2023-11-24 21:52:30,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:30,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:52:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:30,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 21:52:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:30,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-24 21:52:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:30,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-24 21:52:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:30,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:52:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:30,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:30,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:30,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884537831] [2023-11-24 21:52:30,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884537831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:30,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:30,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:52:30,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675304070] [2023-11-24 21:52:30,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:30,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:52:30,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:30,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:52:30,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:52:30,871 INFO L87 Difference]: Start difference. First operand 2375 states and 4365 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 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) [2023-11-24 21:52:34,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:34,018 INFO L93 Difference]: Finished difference Result 3046 states and 5475 transitions. [2023-11-24 21:52:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:52:34,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 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 121 [2023-11-24 21:52:34,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:34,040 INFO L225 Difference]: With dead ends: 3046 [2023-11-24 21:52:34,041 INFO L226 Difference]: Without dead ends: 2806 [2023-11-24 21:52:34,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:52:34,045 INFO L413 NwaCegarLoop]: 4154 mSDtfsCounter, 4998 mSDsluCounter, 12445 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5013 SdHoareTripleChecker+Valid, 16599 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:34,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5013 Valid, 16599 Invalid, 1714 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [92 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-24 21:52:34,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2023-11-24 21:52:34,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2627. [2023-11-24 21:52:34,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2573 states have (on average 1.8239409249902838) internal successors, (4693), 2576 states have internal predecessors, (4693), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2023-11-24 21:52:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 4774 transitions. [2023-11-24 21:52:34,187 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 4774 transitions. Word has length 121 [2023-11-24 21:52:34,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:34,189 INFO L495 AbstractCegarLoop]: Abstraction has 2627 states and 4774 transitions. [2023-11-24 21:52:34,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 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) [2023-11-24 21:52:34,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 4774 transitions. [2023-11-24 21:52:34,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-24 21:52:34,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:34,200 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] [2023-11-24 21:52:34,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:52:34,201 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:52:34,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:34,203 INFO L85 PathProgramCache]: Analyzing trace with hash 603539502, now seen corresponding path program 1 times [2023-11-24 21:52:34,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:34,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539576151] [2023-11-24 21:52:34,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:34,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:34,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:52:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:34,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 21:52:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:34,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-24 21:52:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:34,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-24 21:52:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:52:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:34,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:34,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539576151] [2023-11-24 21:52:34,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539576151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:34,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:34,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:52:34,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820224302] [2023-11-24 21:52:34,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:34,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:52:34,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:34,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:52:34,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:52:34,673 INFO L87 Difference]: Start difference. First operand 2627 states and 4774 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-11-24 21:52:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:38,702 INFO L93 Difference]: Finished difference Result 3651 states and 6465 transitions. [2023-11-24 21:52:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:52:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-11-24 21:52:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:38,725 INFO L225 Difference]: With dead ends: 3651 [2023-11-24 21:52:38,726 INFO L226 Difference]: Without dead ends: 3159 [2023-11-24 21:52:38,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:52:38,732 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 5019 mSDsluCounter, 16941 mSDsCounter, 0 mSdLazyCounter, 2638 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5034 SdHoareTripleChecker+Valid, 21241 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:38,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5034 Valid, 21241 Invalid, 2691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 2638 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-24 21:52:38,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2023-11-24 21:52:38,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 2860. [2023-11-24 21:52:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2782 states have (on average 1.8069734004313445) internal successors, (5027), 2786 states have internal predecessors, (5027), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2023-11-24 21:52:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 5144 transitions. [2023-11-24 21:52:38,875 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 5144 transitions. Word has length 121 [2023-11-24 21:52:38,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:38,875 INFO L495 AbstractCegarLoop]: Abstraction has 2860 states and 5144 transitions. [2023-11-24 21:52:38,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-11-24 21:52:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 5144 transitions. [2023-11-24 21:52:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-24 21:52:38,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:38,879 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] [2023-11-24 21:52:38,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:52:38,879 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:52:38,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:38,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1429854544, now seen corresponding path program 1 times [2023-11-24 21:52:38,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:38,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846352296] [2023-11-24 21:52:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:38,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:39,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:52:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:39,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 21:52:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:39,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-24 21:52:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:39,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-24 21:52:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:39,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:52:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:39,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:39,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846352296] [2023-11-24 21:52:39,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846352296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:39,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:39,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:52:39,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564054990] [2023-11-24 21:52:39,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:39,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:52:39,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:39,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:52:39,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:52:39,217 INFO L87 Difference]: Start difference. First operand 2860 states and 5144 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-11-24 21:52:42,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:42,658 INFO L93 Difference]: Finished difference Result 4537 states and 7907 transitions. [2023-11-24 21:52:42,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:52:42,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-11-24 21:52:42,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:42,684 INFO L225 Difference]: With dead ends: 4537 [2023-11-24 21:52:42,684 INFO L226 Difference]: Without dead ends: 3812 [2023-11-24 21:52:42,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:52:42,690 INFO L413 NwaCegarLoop]: 4163 mSDtfsCounter, 5097 mSDsluCounter, 16578 mSDsCounter, 0 mSdLazyCounter, 2188 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5112 SdHoareTripleChecker+Valid, 20741 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:42,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5112 Valid, 20741 Invalid, 2271 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 2188 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-24 21:52:42,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2023-11-24 21:52:42,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 3327. [2023-11-24 21:52:42,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3201 states have (on average 1.7794439237738207) internal successors, (5696), 3207 states have internal predecessors, (5696), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-11-24 21:52:42,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 5889 transitions. [2023-11-24 21:52:42,847 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 5889 transitions. Word has length 121 [2023-11-24 21:52:42,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:42,847 INFO L495 AbstractCegarLoop]: Abstraction has 3327 states and 5889 transitions. [2023-11-24 21:52:42,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-11-24 21:52:42,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 5889 transitions. [2023-11-24 21:52:42,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-24 21:52:42,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:42,851 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] [2023-11-24 21:52:42,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:52:42,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:52:42,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:42,852 INFO L85 PathProgramCache]: Analyzing trace with hash 998404078, now seen corresponding path program 1 times [2023-11-24 21:52:42,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:42,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781213233] [2023-11-24 21:52:42,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:42,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:42,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:52:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:43,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 21:52:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-24 21:52:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:43,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-24 21:52:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:43,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:52:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:43,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:43,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:43,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781213233] [2023-11-24 21:52:43,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781213233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:43,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:43,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:52:43,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038930487] [2023-11-24 21:52:43,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:43,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:52:43,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:43,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:52:43,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:52:43,182 INFO L87 Difference]: Start difference. First operand 3327 states and 5889 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-11-24 21:52:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:44,899 INFO L93 Difference]: Finished difference Result 4994 states and 8645 transitions. [2023-11-24 21:52:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:52:44,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-11-24 21:52:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:44,923 INFO L225 Difference]: With dead ends: 4994 [2023-11-24 21:52:44,923 INFO L226 Difference]: Without dead ends: 3802 [2023-11-24 21:52:44,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:52:44,930 INFO L413 NwaCegarLoop]: 4141 mSDtfsCounter, 4837 mSDsluCounter, 12312 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4853 SdHoareTripleChecker+Valid, 16453 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:44,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4853 Valid, 16453 Invalid, 1285 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-24 21:52:44,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2023-11-24 21:52:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 3327. [2023-11-24 21:52:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3201 states have (on average 1.7778819119025304) internal successors, (5691), 3207 states have internal predecessors, (5691), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-11-24 21:52:45,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 5884 transitions. [2023-11-24 21:52:45,091 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 5884 transitions. Word has length 121 [2023-11-24 21:52:45,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:45,092 INFO L495 AbstractCegarLoop]: Abstraction has 3327 states and 5884 transitions. [2023-11-24 21:52:45,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-11-24 21:52:45,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 5884 transitions. [2023-11-24 21:52:45,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-24 21:52:45,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:45,095 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] [2023-11-24 21:52:45,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:52:45,095 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:52:45,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash -308738320, now seen corresponding path program 1 times [2023-11-24 21:52:45,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:45,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270330019] [2023-11-24 21:52:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:45,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:45,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:52:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:45,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 21:52:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:45,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-24 21:52:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:45,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-24 21:52:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:45,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:52:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:45,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:45,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:45,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270330019] [2023-11-24 21:52:45,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270330019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:45,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:45,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:52:45,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201029318] [2023-11-24 21:52:45,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:45,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:52:45,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:45,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:52:45,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:52:45,367 INFO L87 Difference]: Start difference. First operand 3327 states and 5884 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-11-24 21:52:46,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:46,940 INFO L93 Difference]: Finished difference Result 4983 states and 8609 transitions. [2023-11-24 21:52:46,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:52:46,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-11-24 21:52:46,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:46,964 INFO L225 Difference]: With dead ends: 4983 [2023-11-24 21:52:46,964 INFO L226 Difference]: Without dead ends: 3791 [2023-11-24 21:52:46,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:52:46,972 INFO L413 NwaCegarLoop]: 4141 mSDtfsCounter, 4833 mSDsluCounter, 12312 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4849 SdHoareTripleChecker+Valid, 16453 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:46,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4849 Valid, 16453 Invalid, 1265 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 21:52:46,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3791 states. [2023-11-24 21:52:47,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3791 to 3327. [2023-11-24 21:52:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3327 states, 3201 states have (on average 1.7763199000312402) internal successors, (5686), 3207 states have internal predecessors, (5686), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2023-11-24 21:52:47,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3327 states to 3327 states and 5879 transitions. [2023-11-24 21:52:47,143 INFO L78 Accepts]: Start accepts. Automaton has 3327 states and 5879 transitions. Word has length 121 [2023-11-24 21:52:47,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:47,144 INFO L495 AbstractCegarLoop]: Abstraction has 3327 states and 5879 transitions. [2023-11-24 21:52:47,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-11-24 21:52:47,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3327 states and 5879 transitions. [2023-11-24 21:52:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-24 21:52:47,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:47,148 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] [2023-11-24 21:52:47,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:52:47,148 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:52:47,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:47,149 INFO L85 PathProgramCache]: Analyzing trace with hash 722302578, now seen corresponding path program 1 times [2023-11-24 21:52:47,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:47,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308691369] [2023-11-24 21:52:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:47,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:52:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 21:52:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:47,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-24 21:52:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:47,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-24 21:52:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:47,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:52:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:47,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:47,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308691369] [2023-11-24 21:52:47,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308691369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:47,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:47,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:52:47,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136696398] [2023-11-24 21:52:47,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:47,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:52:47,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:47,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:52:47,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:52:47,564 INFO L87 Difference]: Start difference. First operand 3327 states and 5879 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-11-24 21:52:51,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:52:51,349 INFO L93 Difference]: Finished difference Result 6219 states and 10582 transitions. [2023-11-24 21:52:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:52:51,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-11-24 21:52:51,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:52:51,406 INFO L225 Difference]: With dead ends: 6219 [2023-11-24 21:52:51,406 INFO L226 Difference]: Without dead ends: 5027 [2023-11-24 21:52:51,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:52:51,414 INFO L413 NwaCegarLoop]: 4298 mSDtfsCounter, 5002 mSDsluCounter, 16941 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5017 SdHoareTripleChecker+Valid, 21239 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:52:51,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5017 Valid, 21239 Invalid, 2614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-24 21:52:51,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2023-11-24 21:52:51,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 4276. [2023-11-24 21:52:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4054 states have (on average 1.735816477553034) internal successors, (7037), 4064 states have internal predecessors, (7037), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2023-11-24 21:52:51,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 7388 transitions. [2023-11-24 21:52:51,638 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 7388 transitions. Word has length 121 [2023-11-24 21:52:51,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:52:51,639 INFO L495 AbstractCegarLoop]: Abstraction has 4276 states and 7388 transitions. [2023-11-24 21:52:51,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) [2023-11-24 21:52:51,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 7388 transitions. [2023-11-24 21:52:51,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-24 21:52:51,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:52:51,643 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] [2023-11-24 21:52:51,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:52:51,644 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:52:51,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:52:51,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1184100688, now seen corresponding path program 1 times [2023-11-24 21:52:51,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:52:51,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478340619] [2023-11-24 21:52:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:52:51,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:52:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:51,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:52:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:51,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-24 21:52:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:51,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-24 21:52:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:51,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-24 21:52:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:51,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-24 21:52:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:52:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:52:51,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:52:51,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478340619] [2023-11-24 21:52:51,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478340619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:52:51,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:52:51,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:52:51,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289218508] [2023-11-24 21:52:51,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:52:51,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:52:51,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:52:51,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:52:51,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:52:51,895 INFO L87 Difference]: Start difference. First operand 4276 states and 7388 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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)