./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label48+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_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme --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 a7e5f5a1db53b7a411af936e12a734750394ab6a9f7be60b4c793a1fb07a048c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:02:36,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:02:36,437 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:02:36,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:02:36,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:02:36,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:02:36,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:02:36,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:02:36,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:02:36,471 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:02:36,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:02:36,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:02:36,473 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:02:36,474 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:02:36,474 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:02:36,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:02:36,475 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:02:36,476 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:02:36,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:02:36,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:02:36,477 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:02:36,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:02:36,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:02:36,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:02:36,479 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:02:36,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:02:36,479 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:02:36,480 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:02:36,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:02:36,480 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:02:36,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:02:36,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:36,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:02:36,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:02:36,482 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:02:36,482 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:02:36,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:02:36,483 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:02:36,483 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:02:36,483 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:02:36,483 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:02:36,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:02:36,484 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_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7e5f5a1db53b7a411af936e12a734750394ab6a9f7be60b4c793a1fb07a048c [2023-11-26 12:02:36,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:02:36,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:02:36,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:02:36,741 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:02:36,741 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:02:36,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c [2023-11-26 12:02:39,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:02:40,923 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:02:40,925 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88af256-e702-4296-8f62-282658a7e0ed/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c [2023-11-26 12:02:40,999 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme/data/05e7927e7/8a42d1f8ce1d4bb291d14d25d515dbe1/FLAG71508e9ea [2023-11-26 12:02:41,018 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme/data/05e7927e7/8a42d1f8ce1d4bb291d14d25d515dbe1 [2023-11-26 12:02:41,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:02:41,030 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:02:41,032 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:41,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:02:41,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:02:41,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:41" (1/1) ... [2023-11-26 12:02:41,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5168f25d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41, skipping insertion in model container [2023-11-26 12:02:41,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:41" (1/1) ... [2023-11-26 12:02:41,430 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:02:43,943 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_a88af256-e702-4296-8f62-282658a7e0ed/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c[375709,375722] [2023-11-26 12:02:43,985 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_a88af256-e702-4296-8f62-282658a7e0ed/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c[383339,383352] [2023-11-26 12:02:44,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:44,406 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:02:45,776 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_a88af256-e702-4296-8f62-282658a7e0ed/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c[375709,375722] [2023-11-26 12:02:45,801 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_a88af256-e702-4296-8f62-282658a7e0ed/sv-benchmarks/c/combinations/Problem05_label48+token_ring.10.cil-2.c[383339,383352] [2023-11-26 12:02:45,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:45,968 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:02:45,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:45 WrapperNode [2023-11-26 12:02:45,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:45,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:45,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:02:45,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:02:45,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:45" (1/1) ... [2023-11-26 12:02:46,091 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:45" (1/1) ... [2023-11-26 12:02:46,684 INFO L138 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13108 [2023-11-26 12:02:46,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:46,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:02:46,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:02:46,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:02:46,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:45" (1/1) ... [2023-11-26 12:02:46,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:45" (1/1) ... [2023-11-26 12:02:46,777 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:45" (1/1) ... [2023-11-26 12:02:46,857 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]. [2023-11-26 12:02:46,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:45" (1/1) ... [2023-11-26 12:02:46,858 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:45" (1/1) ... [2023-11-26 12:02:47,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:45" (1/1) ... [2023-11-26 12:02:47,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:45" (1/1) ... [2023-11-26 12:02:47,226 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:45" (1/1) ... [2023-11-26 12:02:47,256 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:45" (1/1) ... [2023-11-26 12:02:47,331 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:02:47,332 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:02:47,333 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:02:47,333 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:02:47,334 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:45" (1/1) ... [2023-11-26 12:02:47,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:47,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:47,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:02:47,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a88af256-e702-4296-8f62-282658a7e0ed/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:02:47,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:02:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-26 12:02:47,504 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-26 12:02:47,504 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-26 12:02:47,506 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-26 12:02:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-26 12:02:47,506 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-26 12:02:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-26 12:02:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-26 12:02:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-26 12:02:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-26 12:02:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-26 12:02:47,508 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-26 12:02:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:02:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:02:47,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:02:47,772 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:02:47,775 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:02:58,138 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:02:58,407 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:02:58,408 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-11-26 12:02:58,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:58 BoogieIcfgContainer [2023-11-26 12:02:58,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:02:58,416 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:02:58,416 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:02:58,420 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:02:58,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:02:41" (1/3) ... [2023-11-26 12:02:58,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3351dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:58, skipping insertion in model container [2023-11-26 12:02:58,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:45" (2/3) ... [2023-11-26 12:02:58,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3351dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:58, skipping insertion in model container [2023-11-26 12:02:58,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:58" (3/3) ... [2023-11-26 12:02:58,425 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.10.cil-2.c [2023-11-26 12:02:58,446 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:02:58,447 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 12:02:58,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:02:58,578 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;@61992863, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:02:58,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 12:02:58,593 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) [2023-11-26 12:02:58,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-26 12:02:58,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:58,617 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] [2023-11-26 12:02:58,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:02:58,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:58,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1401539103, now seen corresponding path program 1 times [2023-11-26 12:02:58,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:58,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953907190] [2023-11-26 12:02:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:59,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:02:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 12:02:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:59,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 12:02:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:59,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 12:02:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:59,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 12:02:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:02:59,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:59,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953907190] [2023-11-26 12:02:59,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953907190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:59,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:59,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 12:02:59,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807588323] [2023-11-26 12:02:59,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:59,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:02:59,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:59,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:02:59,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:02:59,411 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) [2023-11-26 12:03:01,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:01,953 INFO L93 Difference]: Finished difference Result 4952 states and 9258 transitions. [2023-11-26 12:03:01,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:03:01,956 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 [2023-11-26 12:03:01,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:01,990 INFO L225 Difference]: With dead ends: 4952 [2023-11-26 12:03:01,991 INFO L226 Difference]: Without dead ends: 2531 [2023-11-26 12:03:02,001 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 [2023-11-26 12:03:02,005 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 837 mSDsluCounter, 12160 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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 [2023-11-26 12:03:02,006 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] [2023-11-26 12:03:02,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2023-11-26 12:03:02,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2421. [2023-11-26 12:03:02,178 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) [2023-11-26 12:03:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 4443 transitions. [2023-11-26 12:03:02,199 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 4443 transitions. Word has length 141 [2023-11-26 12:03:02,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:02,199 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 4443 transitions. [2023-11-26 12:03:02,200 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) [2023-11-26 12:03:02,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 4443 transitions. [2023-11-26 12:03:02,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-26 12:03:02,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:02,206 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] [2023-11-26 12:03:02,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:03:02,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:03:02,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:02,208 INFO L85 PathProgramCache]: Analyzing trace with hash 726378977, now seen corresponding path program 1 times [2023-11-26 12:03:02,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:02,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171167401] [2023-11-26 12:03:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:02,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:02,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:03:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:02,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 12:03:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:02,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 12:03:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:02,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 12:03:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:02,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 12:03:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:02,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:02,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:02,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171167401] [2023-11-26 12:03:02,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171167401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:02,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:02,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:03:02,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767915493] [2023-11-26 12:03:02,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:02,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:03:02,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:02,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:03:02,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:03:02,818 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) [2023-11-26 12:03:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:08,464 INFO L93 Difference]: Finished difference Result 3245 states and 5826 transitions. [2023-11-26 12:03:08,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 12:03:08,466 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 [2023-11-26 12:03:08,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:08,486 INFO L225 Difference]: With dead ends: 3245 [2023-11-26 12:03:08,487 INFO L226 Difference]: Without dead ends: 2961 [2023-11-26 12:03:08,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-26 12:03:08,490 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 [2023-11-26 12:03:08,491 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] [2023-11-26 12:03:08,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2023-11-26 12:03:08,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2724. [2023-11-26 12:03:08,586 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) [2023-11-26 12:03:08,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4943 transitions. [2023-11-26 12:03:08,600 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4943 transitions. Word has length 141 [2023-11-26 12:03:08,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:08,603 INFO L495 AbstractCegarLoop]: Abstraction has 2724 states and 4943 transitions. [2023-11-26 12:03:08,603 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) [2023-11-26 12:03:08,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4943 transitions. [2023-11-26 12:03:08,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-26 12:03:08,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:08,613 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] [2023-11-26 12:03:08,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:03:08,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:03:08,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:08,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1214426083, now seen corresponding path program 1 times [2023-11-26 12:03:08,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:08,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311896246] [2023-11-26 12:03:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:08,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:08,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:03:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:08,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 12:03:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:08,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 12:03:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:08,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 12:03:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:08,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 12:03:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:08,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:08,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311896246] [2023-11-26 12:03:08,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311896246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:08,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:08,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:03:08,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946331625] [2023-11-26 12:03:08,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:08,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:03:08,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:08,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:03:08,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:03:08,971 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) [2023-11-26 12:03:13,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:13,457 INFO L93 Difference]: Finished difference Result 4288 states and 7546 transitions. [2023-11-26 12:03:13,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 12:03:13,457 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 [2023-11-26 12:03:13,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:13,485 INFO L225 Difference]: With dead ends: 4288 [2023-11-26 12:03:13,486 INFO L226 Difference]: Without dead ends: 3703 [2023-11-26 12:03:13,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-26 12:03:13,496 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, 3.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:13,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5221 Valid, 21400 Invalid, 3059 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 2989 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-26 12:03:13,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2023-11-26 12:03:13,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 3278. [2023-11-26 12:03:13,643 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) [2023-11-26 12:03:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5840 transitions. [2023-11-26 12:03:13,660 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5840 transitions. Word has length 141 [2023-11-26 12:03:13,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:13,661 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 5840 transitions. [2023-11-26 12:03:13,661 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) [2023-11-26 12:03:13,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5840 transitions. [2023-11-26 12:03:13,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-26 12:03:13,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:13,665 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] [2023-11-26 12:03:13,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:03:13,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:03:13,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:13,667 INFO L85 PathProgramCache]: Analyzing trace with hash 121790881, now seen corresponding path program 1 times [2023-11-26 12:03:13,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:13,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451999817] [2023-11-26 12:03:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:13,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:13,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:03:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:13,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 12:03:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:13,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 12:03:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:13,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 12:03:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:14,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 12:03:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:14,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:14,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451999817] [2023-11-26 12:03:14,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451999817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:14,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:14,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:03:14,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409401806] [2023-11-26 12:03:14,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:14,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:03:14,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:14,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:03:14,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:03:14,022 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) [2023-11-26 12:03:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:16,140 INFO L93 Difference]: Finished difference Result 4857 states and 8484 transitions. [2023-11-26 12:03:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:03:16,142 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 [2023-11-26 12:03:16,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:16,167 INFO L225 Difference]: With dead ends: 4857 [2023-11-26 12:03:16,168 INFO L226 Difference]: Without dead ends: 3716 [2023-11-26 12:03:16,173 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 [2023-11-26 12:03:16,184 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, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:16,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5018 Valid, 16573 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-26 12:03:16,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2023-11-26 12:03:16,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 3278. [2023-11-26 12:03:16,480 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) [2023-11-26 12:03:16,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5835 transitions. [2023-11-26 12:03:16,498 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5835 transitions. Word has length 141 [2023-11-26 12:03:16,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:16,499 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 5835 transitions. [2023-11-26 12:03:16,500 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) [2023-11-26 12:03:16,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5835 transitions. [2023-11-26 12:03:16,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-26 12:03:16,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:16,504 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] [2023-11-26 12:03:16,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:03:16,505 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:03:16,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:16,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1160381405, now seen corresponding path program 1 times [2023-11-26 12:03:16,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:16,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219706018] [2023-11-26 12:03:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:16,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:16,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:03:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:16,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 12:03:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:16,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 12:03:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:16,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 12:03:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:16,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 12:03:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:16,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:16,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219706018] [2023-11-26 12:03:16,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219706018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:16,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:16,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:03:16,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156173618] [2023-11-26 12:03:16,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:16,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:03:16,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:16,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:03:16,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:03:16,878 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) [2023-11-26 12:03:19,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:19,188 INFO L93 Difference]: Finished difference Result 4853 states and 8463 transitions. [2023-11-26 12:03:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:03:19,189 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 [2023-11-26 12:03:19,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:19,213 INFO L225 Difference]: With dead ends: 4853 [2023-11-26 12:03:19,213 INFO L226 Difference]: Without dead ends: 3712 [2023-11-26 12:03:19,220 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 [2023-11-26 12:03:19,221 INFO L413 NwaCegarLoop]: 4175 mSDtfsCounter, 4998 mSDsluCounter, 12398 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.7s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:19,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5016 Valid, 16573 Invalid, 1546 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-26 12:03:19,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2023-11-26 12:03:19,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 3278. [2023-11-26 12:03:19,380 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) [2023-11-26 12:03:19,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5830 transitions. [2023-11-26 12:03:19,395 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5830 transitions. Word has length 141 [2023-11-26 12:03:19,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:19,396 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 5830 transitions. [2023-11-26 12:03:19,396 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) [2023-11-26 12:03:19,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5830 transitions. [2023-11-26 12:03:19,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-26 12:03:19,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:19,403 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] [2023-11-26 12:03:19,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:03:19,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:03:19,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:19,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1292110177, now seen corresponding path program 1 times [2023-11-26 12:03:19,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:19,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209251708] [2023-11-26 12:03:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:19,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:19,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:03:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 12:03:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:19,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 12:03:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:19,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 12:03:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:19,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 12:03:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:19,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:19,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:19,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209251708] [2023-11-26 12:03:19,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209251708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:19,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:19,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:03:19,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615961451] [2023-11-26 12:03:19,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:19,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:03:19,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:03:19,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:03:19,780 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) [2023-11-26 12:03:21,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:03:21,909 INFO L93 Difference]: Finished difference Result 4848 states and 8440 transitions. [2023-11-26 12:03:21,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:03:21,910 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 [2023-11-26 12:03:21,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:03:21,931 INFO L225 Difference]: With dead ends: 4848 [2023-11-26 12:03:21,932 INFO L226 Difference]: Without dead ends: 3707 [2023-11-26 12:03:21,937 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 [2023-11-26 12:03:21,938 INFO L413 NwaCegarLoop]: 4175 mSDtfsCounter, 4996 mSDsluCounter, 12398 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.6s IncrementalHoareTripleChecker+Time [2023-11-26 12:03:21,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5014 Valid, 16573 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-26 12:03:21,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2023-11-26 12:03:22,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3278. [2023-11-26 12:03:22,054 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) [2023-11-26 12:03:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5825 transitions. [2023-11-26 12:03:22,063 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5825 transitions. Word has length 141 [2023-11-26 12:03:22,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:03:22,063 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 5825 transitions. [2023-11-26 12:03:22,064 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) [2023-11-26 12:03:22,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5825 transitions. [2023-11-26 12:03:22,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-26 12:03:22,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:03:22,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:03:22,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:03:22,068 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:03:22,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:03:22,069 INFO L85 PathProgramCache]: Analyzing trace with hash -429892509, now seen corresponding path program 1 times [2023-11-26 12:03:22,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:03:22,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430425047] [2023-11-26 12:03:22,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:03:22,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:03:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:22,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 12:03:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:22,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 12:03:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:22,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 12:03:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:22,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 12:03:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:22,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-26 12:03:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:03:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:03:22,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:03:22,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430425047] [2023-11-26 12:03:22,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430425047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:03:22,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:03:22,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:03:22,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497065204] [2023-11-26 12:03:22,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:03:22,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:03:22,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:03:22,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:03:22,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:03:22,348 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)