/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:08:23,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:08:23,991 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:08:23,996 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:08:23,997 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:08:24,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:08:24,025 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:08:24,025 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:08:24,026 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:08:24,030 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:08:24,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:08:24,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:08:24,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:08:24,033 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:08:24,033 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:08:24,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:08:24,034 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:08:24,034 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:08:24,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:08:24,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:08:24,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:08:24,036 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:08:24,036 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:08:24,036 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:08:24,036 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:08:24,037 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:08:24,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:08:24,037 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:08:24,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:08:24,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:08:24,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:08:24,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:08:24,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:08:24,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:08:24,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:08:24,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:08:24,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:08:24,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:08:24,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:08:24,040 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:08:24,041 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:08:24,041 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:08:24,041 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:08:24,041 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:08:24,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:08:24,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:08:24,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:08:24,292 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:08:24,293 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:08:24,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c [2023-12-15 18:08:25,526 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:08:25,750 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:08:25,750 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c [2023-12-15 18:08:25,766 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/220d2c568/ee2373673c87465ab94a25ca01bf390f/FLAG41a93c300 [2023-12-15 18:08:25,778 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/220d2c568/ee2373673c87465ab94a25ca01bf390f [2023-12-15 18:08:25,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:08:25,781 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:08:25,782 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:08:25,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:08:25,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:08:25,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:08:25" (1/1) ... [2023-12-15 18:08:25,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc288c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:25, skipping insertion in model container [2023-12-15 18:08:25,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:08:25" (1/1) ... [2023-12-15 18:08:25,823 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:08:25,950 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[911,924] [2023-12-15 18:08:26,004 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[8416,8429] [2023-12-15 18:08:26,046 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:08:26,056 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:08:26,082 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[911,924] [2023-12-15 18:08:26,112 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[8416,8429] [2023-12-15 18:08:26,158 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:08:26,189 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:08:26,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:26 WrapperNode [2023-12-15 18:08:26,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:08:26,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:08:26,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:08:26,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:08:26,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:26" (1/1) ... [2023-12-15 18:08:26,217 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:26" (1/1) ... [2023-12-15 18:08:26,255 INFO L138 Inliner]: procedures = 63, calls = 73, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 626 [2023-12-15 18:08:26,256 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:08:26,256 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:08:26,256 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:08:26,257 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:08:26,266 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:26" (1/1) ... [2023-12-15 18:08:26,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:26" (1/1) ... [2023-12-15 18:08:26,278 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:26" (1/1) ... [2023-12-15 18:08:26,295 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]. [2023-12-15 18:08:26,295 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:26" (1/1) ... [2023-12-15 18:08:26,295 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:26" (1/1) ... [2023-12-15 18:08:26,310 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:26" (1/1) ... [2023-12-15 18:08:26,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:26" (1/1) ... [2023-12-15 18:08:26,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:26" (1/1) ... [2023-12-15 18:08:26,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:26" (1/1) ... [2023-12-15 18:08:26,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:08:26,336 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:08:26,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:08:26,336 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:08:26,337 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:26" (1/1) ... [2023-12-15 18:08:26,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:08:26,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:08:26,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:08:26,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:08:26,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:08:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 18:08:26,403 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 18:08:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-15 18:08:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-15 18:08:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-15 18:08:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-15 18:08:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-15 18:08:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-15 18:08:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-15 18:08:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-15 18:08:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-15 18:08:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-15 18:08:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-15 18:08:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-15 18:08:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-15 18:08:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-15 18:08:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-15 18:08:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-15 18:08:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-15 18:08:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-15 18:08:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-15 18:08:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-15 18:08:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:08:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-15 18:08:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-15 18:08:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-15 18:08:26,409 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-15 18:08:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:08:26,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:08:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-15 18:08:26,410 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-15 18:08:26,523 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:08:26,525 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:08:27,123 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-12-15 18:08:27,123 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2023-12-15 18:08:27,194 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:08:27,248 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:08:27,248 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-15 18:08:27,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:08:27 BoogieIcfgContainer [2023-12-15 18:08:27,249 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:08:27,251 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:08:27,251 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:08:27,253 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:08:27,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:08:25" (1/3) ... [2023-12-15 18:08:27,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1f3b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:08:27, skipping insertion in model container [2023-12-15 18:08:27,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:08:26" (2/3) ... [2023-12-15 18:08:27,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e1f3b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:08:27, skipping insertion in model container [2023-12-15 18:08:27,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:08:27" (3/3) ... [2023-12-15 18:08:27,256 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.04.cil-1.c [2023-12-15 18:08:27,271 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:08:27,271 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:08:27,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:08:27,321 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;@699301a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:08:27,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:08:27,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 268 states, 217 states have (on average 1.6682027649769586) internal successors, (362), 223 states have internal predecessors, (362), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 18:08:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-15 18:08:27,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:27,336 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] [2023-12-15 18:08:27,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:27,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:27,341 INFO L85 PathProgramCache]: Analyzing trace with hash 759238749, now seen corresponding path program 1 times [2023-12-15 18:08:27,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:27,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505611638] [2023-12-15 18:08:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:27,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:08:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:08:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:08:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:08:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505611638] [2023-12-15 18:08:27,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505611638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:27,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:27,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:08:27,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826807065] [2023-12-15 18:08:27,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:27,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:08:27,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:27,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:08:27,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:08:27,987 INFO L87 Difference]: Start difference. First operand has 268 states, 217 states have (on average 1.6682027649769586) internal successors, (362), 223 states have internal predecessors, (362), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:08:29,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:29,286 INFO L93 Difference]: Finished difference Result 690 states and 1108 transitions. [2023-12-15 18:08:29,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:08:29,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2023-12-15 18:08:29,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:29,301 INFO L225 Difference]: With dead ends: 690 [2023-12-15 18:08:29,302 INFO L226 Difference]: Without dead ends: 434 [2023-12-15 18:08:29,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-15 18:08:29,309 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 802 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:29,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1356 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:08:29,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-12-15 18:08:29,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 368. [2023-12-15 18:08:29,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 296 states have (on average 1.5405405405405406) internal successors, (456), 303 states have internal predecessors, (456), 47 states have call successors, (47), 21 states have call predecessors, (47), 23 states have return successors, (56), 46 states have call predecessors, (56), 45 states have call successors, (56) [2023-12-15 18:08:29,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 559 transitions. [2023-12-15 18:08:29,387 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 559 transitions. Word has length 57 [2023-12-15 18:08:29,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:29,388 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 559 transitions. [2023-12-15 18:08:29,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:08:29,388 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 559 transitions. [2023-12-15 18:08:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-15 18:08:29,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:29,396 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] [2023-12-15 18:08:29,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:08:29,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:29,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:29,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1652725087, now seen corresponding path program 1 times [2023-12-15 18:08:29,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:29,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001944733] [2023-12-15 18:08:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:29,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:08:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:08:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:08:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:08:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:08:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:29,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:29,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001944733] [2023-12-15 18:08:29,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001944733] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:29,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:29,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:29,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183706864] [2023-12-15 18:08:29,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:29,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:29,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:29,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:29,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:29,518 INFO L87 Difference]: Start difference. First operand 368 states and 559 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 18:08:30,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:30,296 INFO L93 Difference]: Finished difference Result 768 states and 1145 transitions. [2023-12-15 18:08:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:08:30,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 57 [2023-12-15 18:08:30,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:30,302 INFO L225 Difference]: With dead ends: 768 [2023-12-15 18:08:30,302 INFO L226 Difference]: Without dead ends: 576 [2023-12-15 18:08:30,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-15 18:08:30,304 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 1076 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:30,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 826 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:08:30,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-12-15 18:08:30,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 538. [2023-12-15 18:08:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 429 states have (on average 1.508158508158508) internal successors, (647), 439 states have internal predecessors, (647), 67 states have call successors, (67), 35 states have call predecessors, (67), 40 states have return successors, (82), 66 states have call predecessors, (82), 65 states have call successors, (82) [2023-12-15 18:08:30,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 796 transitions. [2023-12-15 18:08:30,349 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 796 transitions. Word has length 57 [2023-12-15 18:08:30,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:30,350 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 796 transitions. [2023-12-15 18:08:30,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 18:08:30,350 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 796 transitions. [2023-12-15 18:08:30,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:08:30,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:30,353 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] [2023-12-15 18:08:30,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:08:30,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:30,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:30,354 INFO L85 PathProgramCache]: Analyzing trace with hash -178299430, now seen corresponding path program 1 times [2023-12-15 18:08:30,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:30,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155833500] [2023-12-15 18:08:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:30,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:30,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:30,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:30,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:08:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:30,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:08:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:30,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:30,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 18:08:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:30,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:08:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:30,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:30,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:30,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155833500] [2023-12-15 18:08:30,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155833500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:30,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:30,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:08:30,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588566804] [2023-12-15 18:08:30,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:30,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:08:30,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:30,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:08:30,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:08:30,471 INFO L87 Difference]: Start difference. First operand 538 states and 796 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:08:31,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:31,315 INFO L93 Difference]: Finished difference Result 938 states and 1377 transitions. [2023-12-15 18:08:31,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:08:31,316 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-15 18:08:31,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:31,319 INFO L225 Difference]: With dead ends: 938 [2023-12-15 18:08:31,320 INFO L226 Difference]: Without dead ends: 576 [2023-12-15 18:08:31,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:08:31,322 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 329 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:31,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 1427 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:08:31,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-12-15 18:08:31,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 546. [2023-12-15 18:08:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 435 states have (on average 1.4965517241379311) internal successors, (651), 445 states have internal predecessors, (651), 67 states have call successors, (67), 35 states have call predecessors, (67), 42 states have return successors, (84), 68 states have call predecessors, (84), 65 states have call successors, (84) [2023-12-15 18:08:31,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 802 transitions. [2023-12-15 18:08:31,358 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 802 transitions. Word has length 58 [2023-12-15 18:08:31,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:31,358 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 802 transitions. [2023-12-15 18:08:31,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:08:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 802 transitions. [2023-12-15 18:08:31,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:08:31,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:31,361 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] [2023-12-15 18:08:31,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:08:31,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:31,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:31,362 INFO L85 PathProgramCache]: Analyzing trace with hash -250685988, now seen corresponding path program 1 times [2023-12-15 18:08:31,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:31,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784913424] [2023-12-15 18:08:31,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:31,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:08:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:08:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-15 18:08:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:08:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:31,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:31,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784913424] [2023-12-15 18:08:31,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784913424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:31,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:31,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:08:31,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813228388] [2023-12-15 18:08:31,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:31,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:08:31,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:31,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:08:31,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:08:31,515 INFO L87 Difference]: Start difference. First operand 546 states and 802 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 18:08:33,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:33,247 INFO L93 Difference]: Finished difference Result 1878 states and 2784 transitions. [2023-12-15 18:08:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-15 18:08:33,248 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-12-15 18:08:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:33,252 INFO L225 Difference]: With dead ends: 1878 [2023-12-15 18:08:33,252 INFO L226 Difference]: Without dead ends: 766 [2023-12-15 18:08:33,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2023-12-15 18:08:33,256 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1486 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 2367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:33,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1633 Invalid, 2367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 18:08:33,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2023-12-15 18:08:33,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 690. [2023-12-15 18:08:33,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 540 states have (on average 1.45) internal successors, (783), 553 states have internal predecessors, (783), 87 states have call successors, (87), 49 states have call predecessors, (87), 61 states have return successors, (120), 90 states have call predecessors, (120), 85 states have call successors, (120) [2023-12-15 18:08:33,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 990 transitions. [2023-12-15 18:08:33,297 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 990 transitions. Word has length 58 [2023-12-15 18:08:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:33,298 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 990 transitions. [2023-12-15 18:08:33,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 18:08:33,298 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 990 transitions. [2023-12-15 18:08:33,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:08:33,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:33,299 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] [2023-12-15 18:08:33,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:08:33,300 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:33,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:33,300 INFO L85 PathProgramCache]: Analyzing trace with hash -314677635, now seen corresponding path program 1 times [2023-12-15 18:08:33,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:33,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616743141] [2023-12-15 18:08:33,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:33,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:08:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:08:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:08:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:08:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-15 18:08:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:33,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:33,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616743141] [2023-12-15 18:08:33,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616743141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:33,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:33,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:08:33,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770834745] [2023-12-15 18:08:33,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:33,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:08:33,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:33,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:08:33,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:08:33,444 INFO L87 Difference]: Start difference. First operand 690 states and 990 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 18:08:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:34,268 INFO L93 Difference]: Finished difference Result 1520 states and 2196 transitions. [2023-12-15 18:08:34,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 18:08:34,268 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 59 [2023-12-15 18:08:34,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:34,270 INFO L225 Difference]: With dead ends: 1520 [2023-12-15 18:08:34,270 INFO L226 Difference]: Without dead ends: 163 [2023-12-15 18:08:34,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-15 18:08:34,276 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 860 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:34,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 922 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:08:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-12-15 18:08:34,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-12-15 18:08:34,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 138 states have (on average 1.5724637681159421) internal successors, (217), 139 states have internal predecessors, (217), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-15 18:08:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2023-12-15 18:08:34,286 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 59 [2023-12-15 18:08:34,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:34,286 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2023-12-15 18:08:34,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 18:08:34,286 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2023-12-15 18:08:34,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 18:08:34,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:34,287 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] [2023-12-15 18:08:34,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:08:34,288 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:34,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:34,288 INFO L85 PathProgramCache]: Analyzing trace with hash -468735642, now seen corresponding path program 1 times [2023-12-15 18:08:34,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:34,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480760687] [2023-12-15 18:08:34,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:34,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:08:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:08:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:08:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:34,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:34,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480760687] [2023-12-15 18:08:34,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480760687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:34,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:34,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:08:34,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685447510] [2023-12-15 18:08:34,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:34,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:08:34,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:34,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:08:34,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:08:34,390 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 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) [2023-12-15 18:08:34,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:34,924 INFO L93 Difference]: Finished difference Result 367 states and 580 transitions. [2023-12-15 18:08:34,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 18:08:34,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 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 81 [2023-12-15 18:08:34,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:34,926 INFO L225 Difference]: With dead ends: 367 [2023-12-15 18:08:34,926 INFO L226 Difference]: Without dead ends: 213 [2023-12-15 18:08:34,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:08:34,930 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 405 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:34,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 294 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:08:34,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-15 18:08:34,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 163. [2023-12-15 18:08:34,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 138 states have (on average 1.565217391304348) internal successors, (216), 139 states have internal predecessors, (216), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-15 18:08:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 252 transitions. [2023-12-15 18:08:34,940 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 252 transitions. Word has length 81 [2023-12-15 18:08:34,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:34,940 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 252 transitions. [2023-12-15 18:08:34,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 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) [2023-12-15 18:08:34,941 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 252 transitions. [2023-12-15 18:08:34,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 18:08:34,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:34,942 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] [2023-12-15 18:08:34,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:08:34,942 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:34,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:34,943 INFO L85 PathProgramCache]: Analyzing trace with hash 498615012, now seen corresponding path program 1 times [2023-12-15 18:08:34,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:34,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092542288] [2023-12-15 18:08:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:34,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:08:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:08:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:08:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:35,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:35,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092542288] [2023-12-15 18:08:35,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092542288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:35,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:35,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:08:35,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442990800] [2023-12-15 18:08:35,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:35,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:08:35,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:35,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:08:35,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:08:35,080 INFO L87 Difference]: Start difference. First operand 163 states and 252 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-12-15 18:08:36,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:36,069 INFO L93 Difference]: Finished difference Result 570 states and 906 transitions. [2023-12-15 18:08:36,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:08:36,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 81 [2023-12-15 18:08:36,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:36,073 INFO L225 Difference]: With dead ends: 570 [2023-12-15 18:08:36,074 INFO L226 Difference]: Without dead ends: 418 [2023-12-15 18:08:36,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:08:36,076 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 605 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:36,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 491 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:08:36,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-12-15 18:08:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 319. [2023-12-15 18:08:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 274 states have (on average 1.5766423357664234) internal successors, (432), 276 states have internal predecessors, (432), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2023-12-15 18:08:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 497 transitions. [2023-12-15 18:08:36,096 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 497 transitions. Word has length 81 [2023-12-15 18:08:36,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:36,096 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 497 transitions. [2023-12-15 18:08:36,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-12-15 18:08:36,097 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 497 transitions. [2023-12-15 18:08:36,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 18:08:36,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:36,101 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] [2023-12-15 18:08:36,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:08:36,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:36,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:36,102 INFO L85 PathProgramCache]: Analyzing trace with hash -919184092, now seen corresponding path program 1 times [2023-12-15 18:08:36,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:36,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422659841] [2023-12-15 18:08:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:36,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:08:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:08:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:08:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:36,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:36,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422659841] [2023-12-15 18:08:36,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422659841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:36,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:36,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:36,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539770281] [2023-12-15 18:08:36,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:36,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:36,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:36,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:36,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:36,246 INFO L87 Difference]: Start difference. First operand 319 states and 497 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:37,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:37,582 INFO L93 Difference]: Finished difference Result 935 states and 1480 transitions. [2023-12-15 18:08:37,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:08:37,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-15 18:08:37,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:37,586 INFO L225 Difference]: With dead ends: 935 [2023-12-15 18:08:37,586 INFO L226 Difference]: Without dead ends: 627 [2023-12-15 18:08:37,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:08:37,587 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 608 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:37,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 916 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:08:37,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2023-12-15 18:08:37,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 464. [2023-12-15 18:08:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 399 states have (on average 1.568922305764411) internal successors, (626), 402 states have internal predecessors, (626), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-12-15 18:08:37,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 719 transitions. [2023-12-15 18:08:37,612 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 719 transitions. Word has length 81 [2023-12-15 18:08:37,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:37,613 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 719 transitions. [2023-12-15 18:08:37,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:37,613 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 719 transitions. [2023-12-15 18:08:37,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 18:08:37,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:37,614 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] [2023-12-15 18:08:37,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:08:37,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:37,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2135337818, now seen corresponding path program 1 times [2023-12-15 18:08:37,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:37,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500152497] [2023-12-15 18:08:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:37,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:08:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:08:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:08:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:37,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:37,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500152497] [2023-12-15 18:08:37,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500152497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:37,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:37,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:37,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809770503] [2023-12-15 18:08:37,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:37,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:37,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:37,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:37,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:37,725 INFO L87 Difference]: Start difference. First operand 464 states and 719 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:39,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:39,017 INFO L93 Difference]: Finished difference Result 1469 states and 2318 transitions. [2023-12-15 18:08:39,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:08:39,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-15 18:08:39,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:39,024 INFO L225 Difference]: With dead ends: 1469 [2023-12-15 18:08:39,024 INFO L226 Difference]: Without dead ends: 1016 [2023-12-15 18:08:39,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:08:39,028 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 606 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:39,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 914 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:08:39,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2023-12-15 18:08:39,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 755. [2023-12-15 18:08:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 650 states have (on average 1.5615384615384615) internal successors, (1015), 655 states have internal predecessors, (1015), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2023-12-15 18:08:39,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1168 transitions. [2023-12-15 18:08:39,109 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1168 transitions. Word has length 81 [2023-12-15 18:08:39,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:39,111 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 1168 transitions. [2023-12-15 18:08:39,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:39,111 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1168 transitions. [2023-12-15 18:08:39,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 18:08:39,112 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:39,112 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] [2023-12-15 18:08:39,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:08:39,113 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:39,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:39,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1427662052, now seen corresponding path program 1 times [2023-12-15 18:08:39,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:39,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450389205] [2023-12-15 18:08:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:39,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:08:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:08:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:08:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:39,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450389205] [2023-12-15 18:08:39,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450389205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:39,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:39,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:39,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287249739] [2023-12-15 18:08:39,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:39,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:39,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:39,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:39,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:39,255 INFO L87 Difference]: Start difference. First operand 755 states and 1168 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:40,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:40,460 INFO L93 Difference]: Finished difference Result 2496 states and 3927 transitions. [2023-12-15 18:08:40,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:08:40,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-15 18:08:40,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:40,470 INFO L225 Difference]: With dead ends: 2496 [2023-12-15 18:08:40,471 INFO L226 Difference]: Without dead ends: 1752 [2023-12-15 18:08:40,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:08:40,473 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 653 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:40,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 612 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:08:40,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2023-12-15 18:08:40,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1338. [2023-12-15 18:08:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1153 states have (on average 1.5550737207285343) internal successors, (1793), 1162 states have internal predecessors, (1793), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2023-12-15 18:08:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 2072 transitions. [2023-12-15 18:08:40,557 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 2072 transitions. Word has length 81 [2023-12-15 18:08:40,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:40,557 INFO L495 AbstractCegarLoop]: Abstraction has 1338 states and 2072 transitions. [2023-12-15 18:08:40,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 2072 transitions. [2023-12-15 18:08:40,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 18:08:40,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:40,559 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] [2023-12-15 18:08:40,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:08:40,560 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:40,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:40,560 INFO L85 PathProgramCache]: Analyzing trace with hash -258517786, now seen corresponding path program 1 times [2023-12-15 18:08:40,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:40,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524919272] [2023-12-15 18:08:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:40,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:08:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:08:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:08:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:40,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:40,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:40,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524919272] [2023-12-15 18:08:40,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524919272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:40,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:40,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:40,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766364991] [2023-12-15 18:08:40,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:40,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:40,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:40,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:40,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:40,705 INFO L87 Difference]: Start difference. First operand 1338 states and 2072 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:41,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:41,998 INFO L93 Difference]: Finished difference Result 4549 states and 7161 transitions. [2023-12-15 18:08:41,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:08:41,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-15 18:08:41,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:42,014 INFO L225 Difference]: With dead ends: 4549 [2023-12-15 18:08:42,014 INFO L226 Difference]: Without dead ends: 3222 [2023-12-15 18:08:42,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:08:42,020 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 604 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:42,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 914 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1530 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:08:42,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2023-12-15 18:08:42,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 2509. [2023-12-15 18:08:42,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 2164 states have (on average 1.5503696857670979) internal successors, (3355), 2181 states have internal predecessors, (3355), 226 states have call successors, (226), 102 states have call predecessors, (226), 118 states have return successors, (323), 241 states have call predecessors, (323), 226 states have call successors, (323) [2023-12-15 18:08:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3904 transitions. [2023-12-15 18:08:42,191 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3904 transitions. Word has length 81 [2023-12-15 18:08:42,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:42,192 INFO L495 AbstractCegarLoop]: Abstraction has 2509 states and 3904 transitions. [2023-12-15 18:08:42,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3904 transitions. [2023-12-15 18:08:42,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 18:08:42,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:42,196 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] [2023-12-15 18:08:42,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:08:42,196 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:42,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:42,197 INFO L85 PathProgramCache]: Analyzing trace with hash -312910684, now seen corresponding path program 1 times [2023-12-15 18:08:42,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:42,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468052595] [2023-12-15 18:08:42,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:42,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:08:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:08:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:08:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:42,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:42,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468052595] [2023-12-15 18:08:42,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468052595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:42,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:42,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:42,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262953082] [2023-12-15 18:08:42,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:42,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:42,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:42,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:42,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:42,340 INFO L87 Difference]: Start difference. First operand 2509 states and 3904 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:43,725 INFO L93 Difference]: Finished difference Result 9359 states and 14797 transitions. [2023-12-15 18:08:43,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:08:43,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-15 18:08:43,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:43,758 INFO L225 Difference]: With dead ends: 9359 [2023-12-15 18:08:43,758 INFO L226 Difference]: Without dead ends: 6861 [2023-12-15 18:08:43,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:08:43,767 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 718 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:43,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 903 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:08:43,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6861 states. [2023-12-15 18:08:44,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6861 to 4769. [2023-12-15 18:08:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4769 states, 4120 states have (on average 1.5502427184466019) internal successors, (6387), 4153 states have internal predecessors, (6387), 418 states have call successors, (418), 198 states have call predecessors, (418), 230 states have return successors, (693), 449 states have call predecessors, (693), 418 states have call successors, (693) [2023-12-15 18:08:44,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4769 states to 4769 states and 7498 transitions. [2023-12-15 18:08:44,166 INFO L78 Accepts]: Start accepts. Automaton has 4769 states and 7498 transitions. Word has length 81 [2023-12-15 18:08:44,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:44,166 INFO L495 AbstractCegarLoop]: Abstraction has 4769 states and 7498 transitions. [2023-12-15 18:08:44,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:44,167 INFO L276 IsEmpty]: Start isEmpty. Operand 4769 states and 7498 transitions. [2023-12-15 18:08:44,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 18:08:44,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:44,172 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] [2023-12-15 18:08:44,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:08:44,172 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:44,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:44,174 INFO L85 PathProgramCache]: Analyzing trace with hash 366361570, now seen corresponding path program 1 times [2023-12-15 18:08:44,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:44,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728664086] [2023-12-15 18:08:44,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:44,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:44,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:08:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:08:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:08:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:44,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:44,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728664086] [2023-12-15 18:08:44,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728664086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:44,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:44,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:44,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974484502] [2023-12-15 18:08:44,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:44,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:44,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:44,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:44,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:44,335 INFO L87 Difference]: Start difference. First operand 4769 states and 7498 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:45,978 INFO L93 Difference]: Finished difference Result 17605 states and 28049 transitions. [2023-12-15 18:08:45,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:08:45,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-15 18:08:45,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:46,055 INFO L225 Difference]: With dead ends: 17605 [2023-12-15 18:08:46,056 INFO L226 Difference]: Without dead ends: 12847 [2023-12-15 18:08:46,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:08:46,081 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 619 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:46,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 907 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1662 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:08:46,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12847 states. [2023-12-15 18:08:46,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12847 to 9366. [2023-12-15 18:08:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9366 states, 8125 states have (on average 1.5513846153846154) internal successors, (12605), 8190 states have internal predecessors, (12605), 786 states have call successors, (786), 390 states have call predecessors, (786), 454 states have return successors, (1579), 849 states have call predecessors, (1579), 786 states have call successors, (1579) [2023-12-15 18:08:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9366 states to 9366 states and 14970 transitions. [2023-12-15 18:08:46,810 INFO L78 Accepts]: Start accepts. Automaton has 9366 states and 14970 transitions. Word has length 81 [2023-12-15 18:08:46,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:46,810 INFO L495 AbstractCegarLoop]: Abstraction has 9366 states and 14970 transitions. [2023-12-15 18:08:46,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:46,811 INFO L276 IsEmpty]: Start isEmpty. Operand 9366 states and 14970 transitions. [2023-12-15 18:08:46,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 18:08:46,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:46,819 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] [2023-12-15 18:08:46,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:08:46,820 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:46,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:46,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1967031068, now seen corresponding path program 1 times [2023-12-15 18:08:46,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:46,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109164325] [2023-12-15 18:08:46,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:46,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:46,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:46,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:08:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:46,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:08:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:46,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:46,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:08:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:46,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:46,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109164325] [2023-12-15 18:08:46,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109164325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:46,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:46,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:46,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641982290] [2023-12-15 18:08:46,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:46,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:46,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:46,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:46,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:46,946 INFO L87 Difference]: Start difference. First operand 9366 states and 14970 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:48,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:48,837 INFO L93 Difference]: Finished difference Result 33824 states and 54719 transitions. [2023-12-15 18:08:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:08:48,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-15 18:08:48,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:48,943 INFO L225 Difference]: With dead ends: 33824 [2023-12-15 18:08:48,943 INFO L226 Difference]: Without dead ends: 24469 [2023-12-15 18:08:48,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:08:48,987 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 647 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:48,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 907 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:08:49,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24469 states. [2023-12-15 18:08:50,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24469 to 18559. [2023-12-15 18:08:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18559 states, 16166 states have (on average 1.5528269206977607) internal successors, (25103), 16295 states have internal predecessors, (25103), 1490 states have call successors, (1490), 774 states have call predecessors, (1490), 902 states have return successors, (3805), 1617 states have call predecessors, (3805), 1490 states have call successors, (3805) [2023-12-15 18:08:50,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18559 states to 18559 states and 30398 transitions. [2023-12-15 18:08:50,192 INFO L78 Accepts]: Start accepts. Automaton has 18559 states and 30398 transitions. Word has length 81 [2023-12-15 18:08:50,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:50,193 INFO L495 AbstractCegarLoop]: Abstraction has 18559 states and 30398 transitions. [2023-12-15 18:08:50,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:50,193 INFO L276 IsEmpty]: Start isEmpty. Operand 18559 states and 30398 transitions. [2023-12-15 18:08:50,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 18:08:50,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:50,214 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] [2023-12-15 18:08:50,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:08:50,214 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:50,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:50,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1765207134, now seen corresponding path program 1 times [2023-12-15 18:08:50,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:50,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322990665] [2023-12-15 18:08:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:50,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:50,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:50,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:08:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:50,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:08:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:50,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:50,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:08:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:50,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:50,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322990665] [2023-12-15 18:08:50,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322990665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:50,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:50,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:50,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536763938] [2023-12-15 18:08:50,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:50,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:50,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:50,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:50,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:50,335 INFO L87 Difference]: Start difference. First operand 18559 states and 30398 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:53,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:53,031 INFO L93 Difference]: Finished difference Result 65303 states and 108341 transitions. [2023-12-15 18:08:53,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:08:53,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-15 18:08:53,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:53,267 INFO L225 Difference]: With dead ends: 65303 [2023-12-15 18:08:53,267 INFO L226 Difference]: Without dead ends: 46755 [2023-12-15 18:08:53,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:08:53,349 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 608 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:53,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 907 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:08:53,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46755 states. [2023-12-15 18:08:55,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46755 to 36944. [2023-12-15 18:08:55,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36944 states, 32311 states have (on average 1.554424189904367) internal successors, (50225), 32568 states have internal predecessors, (50225), 2834 states have call successors, (2834), 1542 states have call predecessors, (2834), 1798 states have return successors, (9651), 3089 states have call predecessors, (9651), 2834 states have call successors, (9651) [2023-12-15 18:08:55,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36944 states to 36944 states and 62710 transitions. [2023-12-15 18:08:55,752 INFO L78 Accepts]: Start accepts. Automaton has 36944 states and 62710 transitions. Word has length 81 [2023-12-15 18:08:55,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:55,753 INFO L495 AbstractCegarLoop]: Abstraction has 36944 states and 62710 transitions. [2023-12-15 18:08:55,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:08:55,753 INFO L276 IsEmpty]: Start isEmpty. Operand 36944 states and 62710 transitions. [2023-12-15 18:08:55,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 18:08:55,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:55,793 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] [2023-12-15 18:08:55,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:08:55,793 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:55,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:55,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1204507356, now seen corresponding path program 1 times [2023-12-15 18:08:55,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:55,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286999620] [2023-12-15 18:08:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:55,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:55,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:08:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:55,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:08:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:55,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:08:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:55,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:08:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:08:55,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:55,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286999620] [2023-12-15 18:08:55,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286999620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:55,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:55,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:55,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783065264] [2023-12-15 18:08:55,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:55,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:55,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:55,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:55,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:55,962 INFO L87 Difference]: Start difference. First operand 36944 states and 62710 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:09:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:09:02,131 INFO L93 Difference]: Finished difference Result 169961 states and 288704 transitions. [2023-12-15 18:09:02,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 18:09:02,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2023-12-15 18:09:02,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:09:02,998 INFO L225 Difference]: With dead ends: 169961 [2023-12-15 18:09:02,998 INFO L226 Difference]: Without dead ends: 133029 [2023-12-15 18:09:03,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-15 18:09:03,105 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1629 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:09:03,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 763 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 18:09:03,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133029 states. [2023-12-15 18:09:09,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133029 to 108219. [2023-12-15 18:09:09,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108219 states, 94376 states have (on average 1.5412604899550733) internal successors, (145458), 95532 states have internal predecessors, (145458), 8442 states have call successors, (8442), 4632 states have call predecessors, (8442), 5400 states have return successors, (28268), 8310 states have call predecessors, (28268), 8442 states have call successors, (28268) [2023-12-15 18:09:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108219 states to 108219 states and 182168 transitions. [2023-12-15 18:09:09,786 INFO L78 Accepts]: Start accepts. Automaton has 108219 states and 182168 transitions. Word has length 81 [2023-12-15 18:09:09,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:09:09,787 INFO L495 AbstractCegarLoop]: Abstraction has 108219 states and 182168 transitions. [2023-12-15 18:09:09,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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) [2023-12-15 18:09:09,787 INFO L276 IsEmpty]: Start isEmpty. Operand 108219 states and 182168 transitions. [2023-12-15 18:09:10,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 18:09:10,073 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:09:10,073 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:09:10,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:09:10,074 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:09:10,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:09:10,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2139891914, now seen corresponding path program 1 times [2023-12-15 18:09:10,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:09:10,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787787552] [2023-12-15 18:09:10,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:09:10,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:09:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:10,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:09:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:10,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:09:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:10,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:09:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:10,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:09:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:10,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:09:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:10,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 18:09:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:10,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:09:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:10,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:09:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:09:10,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:09:10,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787787552] [2023-12-15 18:09:10,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787787552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:09:10,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208286357] [2023-12-15 18:09:10,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:09:10,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:09:10,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:09:10,242 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:09:10,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:09:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:09:10,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:09:10,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:09:10,519 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-15 18:09:10,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:09:10,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208286357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:09:10,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:09:10,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 18:09:10,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929078290] [2023-12-15 18:09:10,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:09:10,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:09:10,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:09:10,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:09:10,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:09:10,522 INFO L87 Difference]: Start difference. First operand 108219 states and 182168 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Received shutdown request... [2023-12-15 18:09:17,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:09:17,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:09:17,271 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 159 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:09:17,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 336 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:09:17,272 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:09:17,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 18:09:17,297 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:09:17,297 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:09:17,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 18:09:17,480 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (108219states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (244298 states constructed, input type IntersectNwa). [2023-12-15 18:09:17,481 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:09:17,484 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:09:17,487 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:09:17,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:09:17 BoogieIcfgContainer [2023-12-15 18:09:17,489 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:09:17,490 INFO L158 Benchmark]: Toolchain (without parser) took 51708.76ms. Allocated memory was 331.4MB in the beginning and 6.5GB in the end (delta: 6.2GB). Free memory was 278.4MB in the beginning and 5.4GB in the end (delta: -5.1GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-15 18:09:17,490 INFO L158 Benchmark]: CDTParser took 0.62ms. Allocated memory is still 190.8MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:09:17,490 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.11ms. Allocated memory is still 331.4MB. Free memory was 278.0MB in the beginning and 257.4MB in the end (delta: 20.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-15 18:09:17,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.61ms. Allocated memory is still 331.4MB. Free memory was 257.0MB in the beginning and 253.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 18:09:17,491 INFO L158 Benchmark]: Boogie Preprocessor took 79.01ms. Allocated memory is still 331.4MB. Free memory was 253.9MB in the beginning and 249.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 18:09:17,491 INFO L158 Benchmark]: RCFGBuilder took 912.82ms. Allocated memory is still 331.4MB. Free memory was 249.7MB in the beginning and 272.2MB in the end (delta: -22.5MB). Peak memory consumption was 26.7MB. Max. memory is 8.0GB. [2023-12-15 18:09:17,491 INFO L158 Benchmark]: TraceAbstraction took 50238.37ms. Allocated memory was 331.4MB in the beginning and 6.5GB in the end (delta: 6.2GB). Free memory was 271.1MB in the beginning and 5.4GB in the end (delta: -5.1GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-15 18:09:17,492 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62ms. Allocated memory is still 190.8MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 407.11ms. Allocated memory is still 331.4MB. Free memory was 278.0MB in the beginning and 257.4MB in the end (delta: 20.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 65.61ms. Allocated memory is still 331.4MB. Free memory was 257.0MB in the beginning and 253.9MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 79.01ms. Allocated memory is still 331.4MB. Free memory was 253.9MB in the beginning and 249.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 912.82ms. Allocated memory is still 331.4MB. Free memory was 249.7MB in the beginning and 272.2MB in the end (delta: -22.5MB). Peak memory consumption was 26.7MB. Max. memory is 8.0GB. * TraceAbstraction took 50238.37ms. Allocated memory was 331.4MB in the beginning and 6.5GB in the end (delta: 6.2GB). Free memory was 271.1MB in the beginning and 5.4GB in the end (delta: -5.1GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 599]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 599). Cancelled while NwaCegarLoop was constructing difference of abstraction (108219states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (244298 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 27). Cancelled while NwaCegarLoop was constructing difference of abstraction (108219states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (244298 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 268 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 50.2s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 34.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12685 SdHoareTripleChecker+Valid, 14.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12414 mSDsluCounter, 15028 SdHoareTripleChecker+Invalid, 12.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11321 mSDsCounter, 1586 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21366 IncrementalHoareTripleChecker+Invalid, 22952 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1586 mSolverCounterUnsat, 3707 mSDtfsCounter, 21366 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 651 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108219occurred in iteration=16, InterpolantAutomatonStates: 232, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 48014 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1442 NumberOfCodeBlocks, 1442 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1424 ConstructedInterpolants, 0 QuantifiedInterpolants, 3878 SizeOfPredicates, 0 NumberOfNonLiveVariables, 576 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 18 InterpolantComputations, 17 PerfectInterpolantSequences, 52/76 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown