./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.7.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a66684-024e-442f-ae4b-9f9387876e61/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a66684-024e-442f-ae4b-9f9387876e61/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_f6a66684-024e-442f-ae4b-9f9387876e61/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a66684-024e-442f-ae4b-9f9387876e61/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.7.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a66684-024e-442f-ae4b-9f9387876e61/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a66684-024e-442f-ae4b-9f9387876e61/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 64bit --witnessprinter.graph.data.programhash de227c051b8f49d3a151b019043adc8d3b2b410c23383c7a1c8f8a9dd58aa98d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:42:40,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:42:40,417 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a66684-024e-442f-ae4b-9f9387876e61/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 10:42:40,427 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:42:40,428 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:42:40,453 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:42:40,454 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:42:40,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:42:40,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:42:40,457 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:42:40,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:42:40,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:42:40,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:42:40,460 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:42:40,460 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:42:40,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:42:40,462 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:42:40,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:42:40,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:42:40,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:42:40,464 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:42:40,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:42:40,466 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:42:40,466 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:42:40,467 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:42:40,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:42:40,468 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:42:40,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:42:40,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:40,470 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:42:40,470 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:42:40,471 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:42:40,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:42:40,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:42:40,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:42:40,474 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:42:40,474 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:42:40,475 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:42:40,475 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:42:40,476 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_f6a66684-024e-442f-ae4b-9f9387876e61/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a66684-024e-442f-ae4b-9f9387876e61/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de227c051b8f49d3a151b019043adc8d3b2b410c23383c7a1c8f8a9dd58aa98d [2023-11-26 10:42:40,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:42:40,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:42:40,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:42:40,852 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:42:40,853 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:42:40,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a66684-024e-442f-ae4b-9f9387876e61/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.7.prop1-func-interl.c [2023-11-26 10:42:44,149 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:42:44,647 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:42:44,648 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a66684-024e-442f-ae4b-9f9387876e61/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.7.prop1-func-interl.c [2023-11-26 10:42:44,673 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a66684-024e-442f-ae4b-9f9387876e61/bin/uautomizer-verify-VRDe98Ueme/data/49f70a0d8/3022612c86b84d9188601aa27a702a6d/FLAGb7bab1820 [2023-11-26 10:42:44,693 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a66684-024e-442f-ae4b-9f9387876e61/bin/uautomizer-verify-VRDe98Ueme/data/49f70a0d8/3022612c86b84d9188601aa27a702a6d [2023-11-26 10:42:44,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:42:44,703 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:42:44,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:44,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:42:44,732 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:42:44,733 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:44" (1/1) ... [2023-11-26 10:42:44,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a4337d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:44, skipping insertion in model container [2023-11-26 10:42:44,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:42:44" (1/1) ... [2023-11-26 10:42:44,848 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:42:45,075 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_f6a66684-024e-442f-ae4b-9f9387876e61/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.7.prop1-func-interl.c[1175,1188] [2023-11-26 10:42:45,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:45,922 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:42:45,937 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_f6a66684-024e-442f-ae4b-9f9387876e61/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.7.prop1-func-interl.c[1175,1188] [2023-11-26 10:42:46,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:42:46,302 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:42:46,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46 WrapperNode [2023-11-26 10:42:46,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:42:46,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:46,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:42:46,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:42:46,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:46,437 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:47,861 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 12190 [2023-11-26 10:42:47,862 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:42:47,876 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:42:47,876 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:42:47,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:42:47,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:47,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:48,372 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:48,633 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 10:42:48,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:48,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:49,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:49,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:49,349 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:49,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:49,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:42:49,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:42:49,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:42:49,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:42:49,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (1/1) ... [2023-11-26 10:42:49,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:42:49,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a66684-024e-442f-ae4b-9f9387876e61/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:42:49,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a66684-024e-442f-ae4b-9f9387876e61/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:42:49,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6a66684-024e-442f-ae4b-9f9387876e61/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:42:49,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:42:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:42:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:42:49,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:42:50,810 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:42:50,813 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:00,009 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:00,231 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:00,231 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:43:00,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:00 BoogieIcfgContainer [2023-11-26 10:43:00,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:00,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:43:00,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:43:00,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:43:00,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:42:44" (1/3) ... [2023-11-26 10:43:00,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39411f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:00, skipping insertion in model container [2023-11-26 10:43:00,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:42:46" (2/3) ... [2023-11-26 10:43:00,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39411f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:00, skipping insertion in model container [2023-11-26 10:43:00,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:00" (3/3) ... [2023-11-26 10:43:00,244 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.7.prop1-func-interl.c [2023-11-26 10:43:00,264 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:43:00,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:43:00,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:00,371 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;@577f2edf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:00,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:43:00,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 2764 states, 2762 states have (on average 1.671252715423606) internal successors, (4616), 2763 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:00,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-26 10:43:00,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:00,411 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] [2023-11-26 10:43:00,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:00,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:00,416 INFO L85 PathProgramCache]: Analyzing trace with hash 25274152, now seen corresponding path program 1 times [2023-11-26 10:43:00,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:00,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726429993] [2023-11-26 10:43:00,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:00,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:01,776 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 10:43:01,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:01,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726429993] [2023-11-26 10:43:01,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726429993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:01,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:01,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:01,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988352442] [2023-11-26 10:43:01,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:01,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:01,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:01,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:01,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:01,844 INFO L87 Difference]: Start difference. First operand has 2764 states, 2762 states have (on average 1.671252715423606) internal successors, (4616), 2763 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:02,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:02,119 INFO L93 Difference]: Finished difference Result 5395 states and 9013 transitions. [2023-11-26 10:43:02,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:02,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-11-26 10:43:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:02,158 INFO L225 Difference]: With dead ends: 5395 [2023-11-26 10:43:02,158 INFO L226 Difference]: Without dead ends: 2764 [2023-11-26 10:43:02,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:02,174 INFO L413 NwaCegarLoop]: 4609 mSDtfsCounter, 1 mSDsluCounter, 9213 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13822 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:02,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13822 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:43:02,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2023-11-26 10:43:02,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2023-11-26 10:43:02,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.6699239956568948) internal successors, (4614), 2763 states have internal predecessors, (4614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 4614 transitions. [2023-11-26 10:43:02,328 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 4614 transitions. Word has length 138 [2023-11-26 10:43:02,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:02,329 INFO L495 AbstractCegarLoop]: Abstraction has 2764 states and 4614 transitions. [2023-11-26 10:43:02,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:02,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 4614 transitions. [2023-11-26 10:43:02,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-26 10:43:02,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:02,333 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] [2023-11-26 10:43:02,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:43:02,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:02,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:02,335 INFO L85 PathProgramCache]: Analyzing trace with hash 785224464, now seen corresponding path program 1 times [2023-11-26 10:43:02,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:02,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120022329] [2023-11-26 10:43:02,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:02,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:02,848 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 10:43:02,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:02,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120022329] [2023-11-26 10:43:02,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120022329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:02,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:02,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:02,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902845328] [2023-11-26 10:43:02,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:02,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:02,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:02,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:02,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:02,860 INFO L87 Difference]: Start difference. First operand 2764 states and 4614 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:03,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:03,169 INFO L93 Difference]: Finished difference Result 5398 states and 9011 transitions. [2023-11-26 10:43:03,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:03,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2023-11-26 10:43:03,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:03,187 INFO L225 Difference]: With dead ends: 5398 [2023-11-26 10:43:03,187 INFO L226 Difference]: Without dead ends: 2767 [2023-11-26 10:43:03,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:03,192 INFO L413 NwaCegarLoop]: 4609 mSDtfsCounter, 1 mSDsluCounter, 9211 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13820 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:03,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13820 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:43:03,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2023-11-26 10:43:03,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2766. [2023-11-26 10:43:03,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2765 states have (on average 1.6694394213381556) internal successors, (4616), 2765 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:03,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 4616 transitions. [2023-11-26 10:43:03,267 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 4616 transitions. Word has length 139 [2023-11-26 10:43:03,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:03,268 INFO L495 AbstractCegarLoop]: Abstraction has 2766 states and 4616 transitions. [2023-11-26 10:43:03,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:03,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 4616 transitions. [2023-11-26 10:43:03,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-26 10:43:03,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:03,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:43:03,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:43:03,277 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:03,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash 136730308, now seen corresponding path program 1 times [2023-11-26 10:43:03,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:03,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131669080] [2023-11-26 10:43:03,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:03,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:03,787 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 10:43:03,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:03,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131669080] [2023-11-26 10:43:03,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131669080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:03,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:03,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:03,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288501664] [2023-11-26 10:43:03,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:03,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:03,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:03,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:03,791 INFO L87 Difference]: Start difference. First operand 2766 states and 4616 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:04,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:04,047 INFO L93 Difference]: Finished difference Result 8022 states and 13391 transitions. [2023-11-26 10:43:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:04,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2023-11-26 10:43:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:04,079 INFO L225 Difference]: With dead ends: 8022 [2023-11-26 10:43:04,079 INFO L226 Difference]: Without dead ends: 5389 [2023-11-26 10:43:04,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:04,092 INFO L413 NwaCegarLoop]: 4710 mSDtfsCounter, 4377 mSDsluCounter, 9308 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4377 SdHoareTripleChecker+Valid, 14018 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:04,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4377 Valid, 14018 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:43:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5389 states. [2023-11-26 10:43:04,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5389 to 2768. [2023-11-26 10:43:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2767 states have (on average 1.6689555475243947) internal successors, (4618), 2767 states have internal predecessors, (4618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:04,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 4618 transitions. [2023-11-26 10:43:04,197 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 4618 transitions. Word has length 140 [2023-11-26 10:43:04,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:04,198 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 4618 transitions. [2023-11-26 10:43:04,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:04,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 4618 transitions. [2023-11-26 10:43:04,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-26 10:43:04,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:04,202 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 10:43:04,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:43:04,202 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:04,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:04,203 INFO L85 PathProgramCache]: Analyzing trace with hash -167033480, now seen corresponding path program 1 times [2023-11-26 10:43:04,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:04,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278823532] [2023-11-26 10:43:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:04,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:04,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:04,577 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 10:43:04,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:04,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278823532] [2023-11-26 10:43:04,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278823532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:04,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:04,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:04,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550313870] [2023-11-26 10:43:04,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:04,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:43:04,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:04,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:04,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:04,581 INFO L87 Difference]: Start difference. First operand 2768 states and 4618 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:04,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:04,834 INFO L93 Difference]: Finished difference Result 8028 states and 13397 transitions. [2023-11-26 10:43:04,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:04,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2023-11-26 10:43:04,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:04,864 INFO L225 Difference]: With dead ends: 8028 [2023-11-26 10:43:04,864 INFO L226 Difference]: Without dead ends: 5393 [2023-11-26 10:43:04,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:04,876 INFO L413 NwaCegarLoop]: 4705 mSDtfsCounter, 4374 mSDsluCounter, 9303 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 14008 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:04,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 14008 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:43:04,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2023-11-26 10:43:04,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 2771. [2023-11-26 10:43:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 2770 states have (on average 1.6689530685920577) internal successors, (4623), 2770 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 4623 transitions. [2023-11-26 10:43:04,977 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 4623 transitions. Word has length 141 [2023-11-26 10:43:04,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:04,978 INFO L495 AbstractCegarLoop]: Abstraction has 2771 states and 4623 transitions. [2023-11-26 10:43:04,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:04,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 4623 transitions. [2023-11-26 10:43:04,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-26 10:43:04,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:04,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:04,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:43:04,982 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:04,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:04,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1081872930, now seen corresponding path program 1 times [2023-11-26 10:43:04,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:04,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487397395] [2023-11-26 10:43:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:04,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:05,731 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 10:43:05,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:05,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487397395] [2023-11-26 10:43:05,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487397395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:05,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:05,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:05,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416740228] [2023-11-26 10:43:05,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:05,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:43:05,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:05,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:43:05,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:05,735 INFO L87 Difference]: Start difference. First operand 2771 states and 4623 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:09,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:09,965 INFO L93 Difference]: Finished difference Result 8044 states and 13422 transitions. [2023-11-26 10:43:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:43:09,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-11-26 10:43:09,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:09,998 INFO L225 Difference]: With dead ends: 8044 [2023-11-26 10:43:09,999 INFO L226 Difference]: Without dead ends: 5406 [2023-11-26 10:43:10,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:43:10,005 INFO L413 NwaCegarLoop]: 3596 mSDtfsCounter, 13264 mSDsluCounter, 7186 mSDsCounter, 0 mSdLazyCounter, 3053 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13264 SdHoareTripleChecker+Valid, 10782 SdHoareTripleChecker+Invalid, 3054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:10,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13264 Valid, 10782 Invalid, 3054 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3053 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-26 10:43:10,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2023-11-26 10:43:10,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 2831. [2023-11-26 10:43:10,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2831 states, 2830 states have (on average 1.6681978798586572) internal successors, (4721), 2830 states have internal predecessors, (4721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 4721 transitions. [2023-11-26 10:43:10,106 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 4721 transitions. Word has length 142 [2023-11-26 10:43:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:10,107 INFO L495 AbstractCegarLoop]: Abstraction has 2831 states and 4721 transitions. [2023-11-26 10:43:10,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:10,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 4721 transitions. [2023-11-26 10:43:10,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-26 10:43:10,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:10,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:10,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:43:10,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:10,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:10,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1668678944, now seen corresponding path program 1 times [2023-11-26 10:43:10,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:10,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119943022] [2023-11-26 10:43:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:10,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:10,672 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 10:43:10,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:10,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119943022] [2023-11-26 10:43:10,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119943022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:10,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:10,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:43:10,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926514100] [2023-11-26 10:43:10,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:10,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:43:10,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:10,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:43:10,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:10,676 INFO L87 Difference]: Start difference. First operand 2831 states and 4721 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:13,636 INFO L93 Difference]: Finished difference Result 5469 states and 9123 transitions. [2023-11-26 10:43:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:43:13,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-11-26 10:43:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:13,657 INFO L225 Difference]: With dead ends: 5469 [2023-11-26 10:43:13,658 INFO L226 Difference]: Without dead ends: 2831 [2023-11-26 10:43:13,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:43:13,663 INFO L413 NwaCegarLoop]: 3622 mSDtfsCounter, 8865 mSDsluCounter, 3736 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8865 SdHoareTripleChecker+Valid, 7358 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:13,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8865 Valid, 7358 Invalid, 2368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-26 10:43:13,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2023-11-26 10:43:13,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2831. [2023-11-26 10:43:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2831 states, 2830 states have (on average 1.6667844522968198) internal successors, (4717), 2830 states have internal predecessors, (4717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 4717 transitions. [2023-11-26 10:43:13,761 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 4717 transitions. Word has length 142 [2023-11-26 10:43:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:13,762 INFO L495 AbstractCegarLoop]: Abstraction has 2831 states and 4717 transitions. [2023-11-26 10:43:13,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:13,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 4717 transitions. [2023-11-26 10:43:13,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-26 10:43:13,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:13,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:13,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:43:13,767 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:13,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:13,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2061705954, now seen corresponding path program 1 times [2023-11-26 10:43:13,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:13,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606980270] [2023-11-26 10:43:13,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:13,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:14,872 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 10:43:14,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:14,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606980270] [2023-11-26 10:43:14,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606980270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:14,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:14,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 10:43:14,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643908433] [2023-11-26 10:43:14,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:14,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:43:14,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:14,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:43:14,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:43:14,877 INFO L87 Difference]: Start difference. First operand 2831 states and 4717 transitions. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:20,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:20,508 INFO L93 Difference]: Finished difference Result 5474 states and 9122 transitions. [2023-11-26 10:43:20,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:43:20,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-11-26 10:43:20,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:20,515 INFO L225 Difference]: With dead ends: 5474 [2023-11-26 10:43:20,516 INFO L226 Difference]: Without dead ends: 2836 [2023-11-26 10:43:20,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:43:20,520 INFO L413 NwaCegarLoop]: 3818 mSDtfsCounter, 8766 mSDsluCounter, 14585 mSDsCounter, 0 mSdLazyCounter, 5460 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8766 SdHoareTripleChecker+Valid, 18403 SdHoareTripleChecker+Invalid, 5462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:20,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8766 Valid, 18403 Invalid, 5462 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 5460 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-26 10:43:20,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2023-11-26 10:43:20,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 2834. [2023-11-26 10:43:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2834 states, 2833 states have (on average 1.6664313448641017) internal successors, (4721), 2833 states have internal predecessors, (4721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 4721 transitions. [2023-11-26 10:43:20,588 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 4721 transitions. Word has length 142 [2023-11-26 10:43:20,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:20,589 INFO L495 AbstractCegarLoop]: Abstraction has 2834 states and 4721 transitions. [2023-11-26 10:43:20,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:20,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 4721 transitions. [2023-11-26 10:43:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-26 10:43:20,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:20,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:20,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:43:20,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:20,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:20,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2061646372, now seen corresponding path program 1 times [2023-11-26 10:43:20,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:20,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332986797] [2023-11-26 10:43:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:20,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:21,725 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 10:43:21,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:21,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332986797] [2023-11-26 10:43:21,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332986797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:21,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:21,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:43:21,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917198136] [2023-11-26 10:43:21,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:21,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:43:21,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:21,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:43:21,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:43:21,729 INFO L87 Difference]: Start difference. First operand 2834 states and 4721 transitions. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)