./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.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_d71365ed-53dd-45ca-8e77-4e315fb273e9/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71365ed-53dd-45ca-8e77-4e315fb273e9/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_d71365ed-53dd-45ca-8e77-4e315fb273e9/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71365ed-53dd-45ca-8e77-4e315fb273e9/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71365ed-53dd-45ca-8e77-4e315fb273e9/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_d71365ed-53dd-45ca-8e77-4e315fb273e9/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 87df5a94129a3baa1e2e3650ee6bffcda9607641da2006311f5769f81726e25d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:43:55,792 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:43:55,911 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71365ed-53dd-45ca-8e77-4e315fb273e9/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:43:55,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:43:55,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:43:55,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:43:55,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:43:55,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:43:55,972 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:43:55,973 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:43:55,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:43:55,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:43:55,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:43:55,979 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:43:55,980 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:43:55,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:43:55,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:43:55,986 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:43:55,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:43:55,987 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:43:55,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:43:55,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:43:55,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:43:55,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:43:55,990 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:43:55,990 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:43:55,991 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:43:55,991 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:43:55,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:43:55,992 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:43:55,992 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:43:55,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:43:55,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:43:55,993 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:43:55,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:43:55,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:43:55,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:43:55,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:43:55,995 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:43:55,996 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:43:55,996 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:43:55,996 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:43:55,996 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_d71365ed-53dd-45ca-8e77-4e315fb273e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71365ed-53dd-45ca-8e77-4e315fb273e9/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87df5a94129a3baa1e2e3650ee6bffcda9607641da2006311f5769f81726e25d [2023-11-24 21:43:56,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:43:56,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:43:56,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:43:56,349 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:43:56,350 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:43:56,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71365ed-53dd-45ca-8e77-4e315fb273e9/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c [2023-11-24 21:43:59,654 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:44:00,468 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:44:00,469 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71365ed-53dd-45ca-8e77-4e315fb273e9/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c [2023-11-24 21:44:00,567 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71365ed-53dd-45ca-8e77-4e315fb273e9/bin/uautomizer-verify-NlZe1sFDwI/data/92f820591/85cd03943ab747b9b7410a2e5b208588/FLAGd3188c03c [2023-11-24 21:44:00,586 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71365ed-53dd-45ca-8e77-4e315fb273e9/bin/uautomizer-verify-NlZe1sFDwI/data/92f820591/85cd03943ab747b9b7410a2e5b208588 [2023-11-24 21:44:00,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:44:00,595 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:44:00,599 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:00,599 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:44:00,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:44:00,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:00" (1/1) ... [2023-11-24 21:44:00,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63559daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:00, skipping insertion in model container [2023-11-24 21:44:00,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:00" (1/1) ... [2023-11-24 21:44:00,973 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:44:03,222 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_d71365ed-53dd-45ca-8e77-4e315fb273e9/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c[381679,381692] [2023-11-24 21:44:03,253 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_d71365ed-53dd-45ca-8e77-4e315fb273e9/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c[383339,383352] [2023-11-24 21:44:03,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:03,643 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:44:04,934 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_d71365ed-53dd-45ca-8e77-4e315fb273e9/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c[381679,381692] [2023-11-24 21:44:04,940 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_d71365ed-53dd-45ca-8e77-4e315fb273e9/sv-benchmarks/c/combinations/Problem05_label43+token_ring.10.cil-2.c[383339,383352] [2023-11-24 21:44:04,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:05,082 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:44:05,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:05 WrapperNode [2023-11-24 21:44:05,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:05,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:44:05,085 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:44:05,085 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:44:05,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:05" (1/1) ... [2023-11-24 21:44:05,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:05" (1/1) ... [2023-11-24 21:44:05,786 INFO L138 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13108 [2023-11-24 21:44:05,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:44:05,787 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:44:05,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:44:05,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:44:05,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:05" (1/1) ... [2023-11-24 21:44:05,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:05" (1/1) ... [2023-11-24 21:44:05,916 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:05" (1/1) ... [2023-11-24 21:44:06,019 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 21:44:06,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:05" (1/1) ... [2023-11-24 21:44:06,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:05" (1/1) ... [2023-11-24 21:44:06,290 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:05" (1/1) ... [2023-11-24 21:44:06,347 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:05" (1/1) ... [2023-11-24 21:44:06,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:05" (1/1) ... [2023-11-24 21:44:06,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:05" (1/1) ... [2023-11-24 21:44:06,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:44:06,644 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:44:06,645 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:44:06,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:44:06,646 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:05" (1/1) ... [2023-11-24 21:44:06,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:44:06,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71365ed-53dd-45ca-8e77-4e315fb273e9/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:44:06,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71365ed-53dd-45ca-8e77-4e315fb273e9/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:44:06,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d71365ed-53dd-45ca-8e77-4e315fb273e9/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:44:06,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:44:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-24 21:44:06,733 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-24 21:44:06,733 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-24 21:44:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-24 21:44:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-24 21:44:06,735 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-24 21:44:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-24 21:44:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-24 21:44:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-24 21:44:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-24 21:44:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-24 21:44:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-24 21:44:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:44:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:44:06,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:44:06,946 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:44:06,949 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:44:17,016 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:44:17,224 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:44:17,224 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-11-24 21:44:17,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:44:17 BoogieIcfgContainer [2023-11-24 21:44:17,226 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:44:17,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:44:17,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:44:17,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:44:17,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:44:00" (1/3) ... [2023-11-24 21:44:17,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f9a377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:44:17, skipping insertion in model container [2023-11-24 21:44:17,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:05" (2/3) ... [2023-11-24 21:44:17,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f9a377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:44:17, skipping insertion in model container [2023-11-24 21:44:17,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:44:17" (3/3) ... [2023-11-24 21:44:17,236 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.10.cil-2.c [2023-11-24 21:44:17,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:44:17,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:44:17,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:44:17,362 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;@3fcfadec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:44:17,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 21:44:17,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 2425 states, 2392 states have (on average 1.8775083612040133) internal successors, (4491), 2395 states have internal predecessors, (4491), 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) [2023-11-24 21:44:17,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-24 21:44:17,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:44:17,400 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] [2023-11-24 21:44:17,401 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:44:17,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1836165759, now seen corresponding path program 1 times [2023-11-24 21:44:17,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:17,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219315016] [2023-11-24 21:44:17,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:17,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:17,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:44:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:17,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:44:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:18,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-24 21:44:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:18,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-24 21:44:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:18,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-24 21:44:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:18,151 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 21:44:18,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:18,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219315016] [2023-11-24 21:44:18,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219315016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:18,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:18,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:44:18,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221308579] [2023-11-24 21:44:18,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:18,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:44:18,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:18,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:44:18,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:44:18,204 INFO L87 Difference]: Start difference. First operand has 2425 states, 2392 states have (on average 1.8775083612040133) internal successors, (4491), 2395 states have internal predecessors, (4491), 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 26.2) internal successors, (131), 3 states have internal predecessors, (131), 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 21:44:20,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:44:20,813 INFO L93 Difference]: Finished difference Result 4952 states and 9258 transitions. [2023-11-24 21:44:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:44:20,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 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 141 [2023-11-24 21:44:20,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:44:20,847 INFO L225 Difference]: With dead ends: 4952 [2023-11-24 21:44:20,847 INFO L226 Difference]: Without dead ends: 2531 [2023-11-24 21:44:20,857 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 [2023-11-24 21:44:20,861 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 837 mSDsluCounter, 12160 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 16379 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:44:20,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 16379 Invalid, 963 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-24 21:44:20,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2023-11-24 21:44:21,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2421. [2023-11-24 21:44:21,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2389 states have (on average 1.8396818752616158) internal successors, (4395), 2391 states have internal predecessors, (4395), 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) [2023-11-24 21:44:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4443 transitions. [2023-11-24 21:44:21,064 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4443 transitions. Word has length 141 [2023-11-24 21:44:21,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:44:21,066 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4443 transitions. [2023-11-24 21:44:21,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 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 21:44:21,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4443 transitions. [2023-11-24 21:44:21,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-24 21:44:21,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:44:21,085 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] [2023-11-24 21:44:21,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:44:21,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:44:21,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:21,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1161005633, now seen corresponding path program 1 times [2023-11-24 21:44:21,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:21,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795212901] [2023-11-24 21:44:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:21,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:21,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:44:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:21,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:44:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:21,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-24 21:44:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:21,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-24 21:44:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:21,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-24 21:44:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:21,663 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 21:44:21,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:21,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795212901] [2023-11-24 21:44:21,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795212901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:21,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:21,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:44:21,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16539525] [2023-11-24 21:44:21,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:21,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:44:21,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:21,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:44:21,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:44:21,668 INFO L87 Difference]: Start difference. First operand 2421 states and 4443 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 21:44:27,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:44:27,042 INFO L93 Difference]: Finished difference Result 3245 states and 5826 transitions. [2023-11-24 21:44:27,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:44:27,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2023-11-24 21:44:27,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:44:27,064 INFO L225 Difference]: With dead ends: 3245 [2023-11-24 21:44:27,064 INFO L226 Difference]: Without dead ends: 2961 [2023-11-24 21:44:27,067 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 [2023-11-24 21:44:27,068 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 5163 mSDsluCounter, 17153 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5180 SdHoareTripleChecker+Valid, 21516 SdHoareTripleChecker+Invalid, 3364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:44:27,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5180 Valid, 21516 Invalid, 3364 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 3302 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-24 21:44:27,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2023-11-24 21:44:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2724. [2023-11-24 21:44:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2663 states have (on average 1.819752159218926) internal successors, (4846), 2667 states have internal predecessors, (4846), 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) [2023-11-24 21:44:27,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4943 transitions. [2023-11-24 21:44:27,209 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4943 transitions. Word has length 141 [2023-11-24 21:44:27,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:44:27,211 INFO L495 AbstractCegarLoop]: Abstraction has 2724 states and 4943 transitions. [2023-11-24 21:44:27,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 21:44:27,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4943 transitions. [2023-11-24 21:44:27,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-24 21:44:27,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:44:27,219 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] [2023-11-24 21:44:27,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:44:27,220 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:44:27,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:27,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1649052739, now seen corresponding path program 1 times [2023-11-24 21:44:27,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:27,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045378880] [2023-11-24 21:44:27,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:27,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:27,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:44:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:44:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:27,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-24 21:44:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:27,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-24 21:44:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:27,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-24 21:44:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:27,806 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 21:44:27,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:27,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045378880] [2023-11-24 21:44:27,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045378880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:27,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:27,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:44:27,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42046454] [2023-11-24 21:44:27,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:27,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:44:27,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:27,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:44:27,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:44:27,815 INFO L87 Difference]: Start difference. First operand 2724 states and 4943 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 21:44:32,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:44:32,491 INFO L93 Difference]: Finished difference Result 4288 states and 7546 transitions. [2023-11-24 21:44:32,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:44:32,492 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2023-11-24 21:44:32,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:44:32,519 INFO L225 Difference]: With dead ends: 4288 [2023-11-24 21:44:32,519 INFO L226 Difference]: Without dead ends: 3703 [2023-11-24 21:44:32,525 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 [2023-11-24 21:44:32,529 INFO L413 NwaCegarLoop]: 4311 mSDtfsCounter, 5204 mSDsluCounter, 17089 mSDsCounter, 0 mSdLazyCounter, 2989 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5221 SdHoareTripleChecker+Valid, 21400 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:44:32,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5221 Valid, 21400 Invalid, 3059 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 2989 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-24 21:44:32,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2023-11-24 21:44:32,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 3278. [2023-11-24 21:44:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3165 states have (on average 1.7873617693522907) internal successors, (5657), 3171 states have internal predecessors, (5657), 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) [2023-11-24 21:44:32,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5840 transitions. [2023-11-24 21:44:32,716 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5840 transitions. Word has length 141 [2023-11-24 21:44:32,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:44:32,716 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 5840 transitions. [2023-11-24 21:44:32,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 21:44:32,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5840 transitions. [2023-11-24 21:44:32,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-24 21:44:32,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:44:32,722 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] [2023-11-24 21:44:32,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:44:32,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:44:32,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:32,723 INFO L85 PathProgramCache]: Analyzing trace with hash 556417537, now seen corresponding path program 1 times [2023-11-24 21:44:32,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:32,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573078278] [2023-11-24 21:44:32,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:32,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:32,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:44:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:32,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:44:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:33,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-24 21:44:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:33,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-24 21:44:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:33,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-24 21:44:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:33,105 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 21:44:33,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:33,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573078278] [2023-11-24 21:44:33,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573078278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:33,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:33,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:44:33,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128281988] [2023-11-24 21:44:33,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:33,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:44:33,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:33,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:44:33,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:44:33,112 INFO L87 Difference]: Start difference. First operand 3278 states and 5840 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 21:44:35,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:44:35,244 INFO L93 Difference]: Finished difference Result 4857 states and 8484 transitions. [2023-11-24 21:44:35,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:44:35,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2023-11-24 21:44:35,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:44:35,274 INFO L225 Difference]: With dead ends: 4857 [2023-11-24 21:44:35,274 INFO L226 Difference]: Without dead ends: 3716 [2023-11-24 21:44:35,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:44:35,283 INFO L413 NwaCegarLoop]: 4175 mSDtfsCounter, 5000 mSDsluCounter, 12398 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5018 SdHoareTripleChecker+Valid, 16573 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:44:35,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5018 Valid, 16573 Invalid, 1560 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-24 21:44:35,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2023-11-24 21:44:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 3278. [2023-11-24 21:44:35,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3165 states have (on average 1.785781990521327) internal successors, (5652), 3171 states have internal predecessors, (5652), 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) [2023-11-24 21:44:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5835 transitions. [2023-11-24 21:44:35,447 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5835 transitions. Word has length 141 [2023-11-24 21:44:35,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:44:35,448 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 5835 transitions. [2023-11-24 21:44:35,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 21:44:35,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5835 transitions. [2023-11-24 21:44:35,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-24 21:44:35,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:44:35,452 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] [2023-11-24 21:44:35,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:44:35,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:44:35,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:35,453 INFO L85 PathProgramCache]: Analyzing trace with hash -725754749, now seen corresponding path program 1 times [2023-11-24 21:44:35,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:35,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637131729] [2023-11-24 21:44:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:35,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:35,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:44:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:35,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:44:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:35,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-24 21:44:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:35,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-24 21:44:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:35,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-24 21:44:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:35,825 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 21:44:35,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:35,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637131729] [2023-11-24 21:44:35,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637131729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:35,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:35,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:44:35,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523153585] [2023-11-24 21:44:35,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:35,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:44:35,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:35,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:44:35,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:44:35,832 INFO L87 Difference]: Start difference. First operand 3278 states and 5835 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 21:44:38,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:44:38,033 INFO L93 Difference]: Finished difference Result 4853 states and 8463 transitions. [2023-11-24 21:44:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:44:38,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2023-11-24 21:44:38,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:44:38,060 INFO L225 Difference]: With dead ends: 4853 [2023-11-24 21:44:38,060 INFO L226 Difference]: Without dead ends: 3712 [2023-11-24 21:44:38,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:44:38,067 INFO L413 NwaCegarLoop]: 4175 mSDtfsCounter, 4998 mSDsluCounter, 12398 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5016 SdHoareTripleChecker+Valid, 16573 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:44:38,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5016 Valid, 16573 Invalid, 1546 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-24 21:44:38,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2023-11-24 21:44:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3278. [2023-11-24 21:44:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3165 states have (on average 1.7842022116903633) internal successors, (5647), 3171 states have internal predecessors, (5647), 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) [2023-11-24 21:44:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5830 transitions. [2023-11-24 21:44:38,244 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5830 transitions. Word has length 141 [2023-11-24 21:44:38,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:44:38,245 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 5830 transitions. [2023-11-24 21:44:38,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 21:44:38,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5830 transitions. [2023-11-24 21:44:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-24 21:44:38,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:44:38,250 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] [2023-11-24 21:44:38,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:44:38,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:44:38,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:38,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1726736833, now seen corresponding path program 1 times [2023-11-24 21:44:38,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:38,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868652502] [2023-11-24 21:44:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:38,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:38,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:44:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:38,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:44:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:38,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-24 21:44:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:38,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-24 21:44:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:38,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-24 21:44:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:38,555 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 21:44:38,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:38,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868652502] [2023-11-24 21:44:38,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868652502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:38,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:38,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:44:38,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465686544] [2023-11-24 21:44:38,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:38,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:44:38,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:38,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:44:38,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:44:38,560 INFO L87 Difference]: Start difference. First operand 3278 states and 5830 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 21:44:40,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:44:40,481 INFO L93 Difference]: Finished difference Result 4848 states and 8440 transitions. [2023-11-24 21:44:40,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:44:40,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2023-11-24 21:44:40,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:44:40,506 INFO L225 Difference]: With dead ends: 4848 [2023-11-24 21:44:40,506 INFO L226 Difference]: Without dead ends: 3707 [2023-11-24 21:44:40,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:44:40,512 INFO L413 NwaCegarLoop]: 4175 mSDtfsCounter, 4996 mSDsluCounter, 12398 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5014 SdHoareTripleChecker+Valid, 16573 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:44:40,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5014 Valid, 16573 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 21:44:40,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2023-11-24 21:44:40,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3278. [2023-11-24 21:44:40,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3165 states have (on average 1.7826224328593996) internal successors, (5642), 3171 states have internal predecessors, (5642), 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) [2023-11-24 21:44:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5825 transitions. [2023-11-24 21:44:40,677 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5825 transitions. Word has length 141 [2023-11-24 21:44:40,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:44:40,677 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 5825 transitions. [2023-11-24 21:44:40,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 21:44:40,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5825 transitions. [2023-11-24 21:44:40,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-24 21:44:40,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:44:40,682 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] [2023-11-24 21:44:40,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:44:40,683 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:44:40,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash 4734147, now seen corresponding path program 1 times [2023-11-24 21:44:40,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:40,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543112051] [2023-11-24 21:44:40,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:40,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:44:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:40,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-24 21:44:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-24 21:44:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:41,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-24 21:44:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-24 21:44:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:41,110 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 21:44:41,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:41,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543112051] [2023-11-24 21:44:41,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543112051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:41,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:41,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:44:41,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246219049] [2023-11-24 21:44:41,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:41,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:44:41,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:41,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:44:41,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:44:41,114 INFO L87 Difference]: Start difference. First operand 3278 states and 5825 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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)