/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.10.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:42:02,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:42:02,190 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:42:02,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:42:02,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:42:02,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:42:02,215 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:42:02,215 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:42:02,216 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:42:02,216 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:42:02,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:42:02,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:42:02,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:42:02,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:42:02,218 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:42:02,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:42:02,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:42:02,218 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:42:02,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:42:02,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:42:02,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:42:02,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:42:02,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:42:02,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:42:02,220 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:42:02,220 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:42:02,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:42:02,221 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:42:02,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:42:02,221 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:42:02,222 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:42:02,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:42:02,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:42:02,222 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:42:02,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:42:02,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:42:02,223 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:42:02,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:42:02,224 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:42:02,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:42:02,224 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:42:02,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:42:02,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:42:02,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:42:02,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:42:02,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:42:02,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:42:02,472 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:42:02,473 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:42:02,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.10.cil-1.c [2023-12-19 01:42:03,439 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:42:03,648 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:42:03,649 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.10.cil-1.c [2023-12-19 01:42:03,661 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b792e82a1/70096ee3a43d430c9a190f68216ae9b0/FLAGa29181fbb [2023-12-19 01:42:04,017 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b792e82a1/70096ee3a43d430c9a190f68216ae9b0 [2023-12-19 01:42:04,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:42:04,021 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:42:04,022 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:42:04,022 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:42:04,028 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:42:04,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:42:04" (1/1) ... [2023-12-19 01:42:04,030 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea80c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04, skipping insertion in model container [2023-12-19 01:42:04,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:42:04" (1/1) ... [2023-12-19 01:42:04,064 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:42:04,163 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.10.cil-1.c[911,924] [2023-12-19 01:42:04,208 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.10.cil-1.c[8416,8429] [2023-12-19 01:42:04,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:42:04,306 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:42:04,314 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.10.cil-1.c[911,924] [2023-12-19 01:42:04,334 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.10.cil-1.c[8416,8429] [2023-12-19 01:42:04,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:42:04,398 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:42:04,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04 WrapperNode [2023-12-19 01:42:04,398 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:42:04,399 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:42:04,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:42:04,401 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:42:04,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04" (1/1) ... [2023-12-19 01:42:04,425 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04" (1/1) ... [2023-12-19 01:42:04,465 INFO L138 Inliner]: procedures = 75, calls = 92, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 992 [2023-12-19 01:42:04,466 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:42:04,466 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:42:04,467 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:42:04,467 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:42:04,480 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04" (1/1) ... [2023-12-19 01:42:04,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04" (1/1) ... [2023-12-19 01:42:04,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04" (1/1) ... [2023-12-19 01:42:04,516 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]. [2023-12-19 01:42:04,516 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04" (1/1) ... [2023-12-19 01:42:04,516 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04" (1/1) ... [2023-12-19 01:42:04,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04" (1/1) ... [2023-12-19 01:42:04,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04" (1/1) ... [2023-12-19 01:42:04,534 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04" (1/1) ... [2023-12-19 01:42:04,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04" (1/1) ... [2023-12-19 01:42:04,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:42:04,555 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:42:04,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:42:04,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:42:04,570 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04" (1/1) ... [2023-12-19 01:42:04,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:42:04,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:42:04,600 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) [2023-12-19 01:42:04,623 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 [2023-12-19 01:42:04,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:42:04,634 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-19 01:42:04,634 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-19 01:42:04,634 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-19 01:42:04,634 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-19 01:42:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-19 01:42:04,635 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-19 01:42:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-19 01:42:04,635 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-19 01:42:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-19 01:42:04,635 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-19 01:42:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-19 01:42:04,635 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-19 01:42:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-19 01:42:04,635 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-19 01:42:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-19 01:42:04,636 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-19 01:42:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-19 01:42:04,636 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-19 01:42:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-19 01:42:04,636 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-19 01:42:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-19 01:42:04,636 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-19 01:42:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:42:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-19 01:42:04,638 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-19 01:42:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-19 01:42:04,638 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-19 01:42:04,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:42:04,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:42:04,639 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-19 01:42:04,639 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-19 01:42:04,639 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-19 01:42:04,639 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-19 01:42:04,741 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:42:04,743 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:42:05,349 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-12-19 01:42:05,349 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; [2023-12-19 01:42:05,455 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:42:05,517 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:42:05,517 INFO L309 CfgBuilder]: Removed 17 assume(true) statements. [2023-12-19 01:42:05,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:42:05 BoogieIcfgContainer [2023-12-19 01:42:05,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:42:05,522 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:42:05,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:42:05,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:42:05,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:42:04" (1/3) ... [2023-12-19 01:42:05,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:42:05, skipping insertion in model container [2023-12-19 01:42:05,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:42:04" (2/3) ... [2023-12-19 01:42:05,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:42:05, skipping insertion in model container [2023-12-19 01:42:05,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:42:05" (3/3) ... [2023-12-19 01:42:05,527 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.10.cil-1.c [2023-12-19 01:42:05,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:42:05,540 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:42:05,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:42:05,610 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;@6430fad5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:42:05,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:42:05,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 414 states, 354 states have (on average 1.7118644067796611) internal successors, (606), 362 states have internal predecessors, (606), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 01:42:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:42:05,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:05,628 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] [2023-12-19 01:42:05,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:05,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:05,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1036360840, now seen corresponding path program 1 times [2023-12-19 01:42:05,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:05,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275327684] [2023-12-19 01:42:05,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:05,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:05,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:05,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:06,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:42:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:06,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:42:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:06,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:42:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:06,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:42:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:06,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:42:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:06,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:06,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275327684] [2023-12-19 01:42:06,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275327684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:06,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:06,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:42:06,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116973766] [2023-12-19 01:42:06,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:06,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:42:06,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:06,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:42:06,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:42:06,094 INFO L87 Difference]: Start difference. First operand has 414 states, 354 states have (on average 1.7118644067796611) internal successors, (606), 362 states have internal predecessors, (606), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 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) [2023-12-19 01:42:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:07,258 INFO L93 Difference]: Finished difference Result 942 states and 1561 transitions. [2023-12-19 01:42:07,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:07,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 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 [2023-12-19 01:42:07,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:07,274 INFO L225 Difference]: With dead ends: 942 [2023-12-19 01:42:07,274 INFO L226 Difference]: Without dead ends: 546 [2023-12-19 01:42:07,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:42:07,281 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1399 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:07,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 1421 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:42:07,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2023-12-19 01:42:07,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 509. [2023-12-19 01:42:07,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 430 states have (on average 1.583720930232558) internal successors, (681), 437 states have internal predecessors, (681), 55 states have call successors, (55), 22 states have call predecessors, (55), 22 states have return successors, (56), 52 states have call predecessors, (56), 51 states have call successors, (56) [2023-12-19 01:42:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 792 transitions. [2023-12-19 01:42:07,347 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 792 transitions. Word has length 57 [2023-12-19 01:42:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:07,348 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 792 transitions. [2023-12-19 01:42:07,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 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) [2023-12-19 01:42:07,348 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 792 transitions. [2023-12-19 01:42:07,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:42:07,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:07,351 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] [2023-12-19 01:42:07,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:42:07,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:07,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:07,352 INFO L85 PathProgramCache]: Analyzing trace with hash -907631928, now seen corresponding path program 1 times [2023-12-19 01:42:07,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:07,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539905935] [2023-12-19 01:42:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:07,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:07,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:07,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:42:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:42:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:07,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:42:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:42:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:07,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:42:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:07,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:07,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539905935] [2023-12-19 01:42:07,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539905935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:07,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:07,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:42:07,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53413891] [2023-12-19 01:42:07,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:07,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:42:07,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:07,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:42:07,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:42:07,527 INFO L87 Difference]: Start difference. First operand 509 states and 792 transitions. 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) [2023-12-19 01:42:08,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:08,588 INFO L93 Difference]: Finished difference Result 870 states and 1322 transitions. [2023-12-19 01:42:08,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 01:42:08,589 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 [2023-12-19 01:42:08,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:08,596 INFO L225 Difference]: With dead ends: 870 [2023-12-19 01:42:08,596 INFO L226 Difference]: Without dead ends: 682 [2023-12-19 01:42:08,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-19 01:42:08,599 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1249 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 1815 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1978 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:08,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 1978 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1815 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:42:08,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-12-19 01:42:08,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 610. [2023-12-19 01:42:08,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 509 states have (on average 1.5638506876227898) internal successors, (796), 518 states have internal predecessors, (796), 68 states have call successors, (68), 29 states have call predecessors, (68), 31 states have return successors, (77), 66 states have call predecessors, (77), 64 states have call successors, (77) [2023-12-19 01:42:08,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 941 transitions. [2023-12-19 01:42:08,670 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 941 transitions. Word has length 57 [2023-12-19 01:42:08,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:08,670 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 941 transitions. [2023-12-19 01:42:08,670 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) [2023-12-19 01:42:08,670 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 941 transitions. [2023-12-19 01:42:08,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:42:08,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:08,677 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] [2023-12-19 01:42:08,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:42:08,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:08,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:08,678 INFO L85 PathProgramCache]: Analyzing trace with hash -14145590, now seen corresponding path program 1 times [2023-12-19 01:42:08,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:08,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624135389] [2023-12-19 01:42:08,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:08,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:08,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:08,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:42:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:08,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:42:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:08,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:42:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:08,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:42:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:08,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:42:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:08,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:08,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624135389] [2023-12-19 01:42:08,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624135389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:08,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:08,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:42:08,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084924805] [2023-12-19 01:42:08,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:08,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:42:08,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:08,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:42:08,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:42:08,842 INFO L87 Difference]: Start difference. First operand 610 states and 941 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-19 01:42:10,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:10,354 INFO L93 Difference]: Finished difference Result 2008 states and 2991 transitions. [2023-12-19 01:42:10,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 01:42:10,356 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 57 [2023-12-19 01:42:10,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:10,363 INFO L225 Difference]: With dead ends: 2008 [2023-12-19 01:42:10,363 INFO L226 Difference]: Without dead ends: 1707 [2023-12-19 01:42:10,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 01:42:10,367 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 3726 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:10,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3744 Valid, 1895 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [666 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:42:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2023-12-19 01:42:10,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1574. [2023-12-19 01:42:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1268 states have (on average 1.4597791798107256) internal successors, (1851), 1292 states have internal predecessors, (1851), 178 states have call successors, (178), 112 states have call predecessors, (178), 126 states have return successors, (210), 172 states have call predecessors, (210), 174 states have call successors, (210) [2023-12-19 01:42:10,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2239 transitions. [2023-12-19 01:42:10,468 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2239 transitions. Word has length 57 [2023-12-19 01:42:10,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:10,469 INFO L495 AbstractCegarLoop]: Abstraction has 1574 states and 2239 transitions. [2023-12-19 01:42:10,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-19 01:42:10,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2239 transitions. [2023-12-19 01:42:10,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:42:10,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:10,470 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] [2023-12-19 01:42:10,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:42:10,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:10,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:10,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1585612455, now seen corresponding path program 1 times [2023-12-19 01:42:10,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:10,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025605407] [2023-12-19 01:42:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:10,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:10,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:10,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:10,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:42:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:10,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:42:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:10,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:10,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 01:42:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:10,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:42:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:10,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:10,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:10,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025605407] [2023-12-19 01:42:10,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025605407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:10,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:10,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:42:10,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632079825] [2023-12-19 01:42:10,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:10,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:42:10,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:10,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:42:10,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:42:10,627 INFO L87 Difference]: Start difference. First operand 1574 states and 2239 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) [2023-12-19 01:42:11,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:11,595 INFO L93 Difference]: Finished difference Result 2971 states and 4187 transitions. [2023-12-19 01:42:11,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:42:11,595 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 [2023-12-19 01:42:11,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:11,602 INFO L225 Difference]: With dead ends: 2971 [2023-12-19 01:42:11,602 INFO L226 Difference]: Without dead ends: 1712 [2023-12-19 01:42:11,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:11,612 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 560 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:11,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 2311 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:42:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2023-12-19 01:42:11,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1606. [2023-12-19 01:42:11,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1292 states have (on average 1.446594427244582) internal successors, (1869), 1316 states have internal predecessors, (1869), 178 states have call successors, (178), 112 states have call predecessors, (178), 134 states have return successors, (218), 180 states have call predecessors, (218), 174 states have call successors, (218) [2023-12-19 01:42:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2265 transitions. [2023-12-19 01:42:11,692 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2265 transitions. Word has length 58 [2023-12-19 01:42:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:11,693 INFO L495 AbstractCegarLoop]: Abstraction has 1606 states and 2265 transitions. [2023-12-19 01:42:11,694 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) [2023-12-19 01:42:11,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2265 transitions. [2023-12-19 01:42:11,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:42:11,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:11,694 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] [2023-12-19 01:42:11,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:42:11,695 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:11,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:11,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1513225897, now seen corresponding path program 1 times [2023-12-19 01:42:11,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:11,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955006682] [2023-12-19 01:42:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:11,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:11,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:11,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:11,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:42:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:11,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:42:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:11,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:11,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 01:42:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:11,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:42:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:11,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:11,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955006682] [2023-12-19 01:42:11,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955006682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:11,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:11,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:42:11,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772897828] [2023-12-19 01:42:11,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:11,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:42:11,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:11,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:42:11,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:42:11,810 INFO L87 Difference]: Start difference. First operand 1606 states and 2265 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-19 01:42:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:13,367 INFO L93 Difference]: Finished difference Result 4865 states and 6826 transitions. [2023-12-19 01:42:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 01:42:13,367 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-12-19 01:42:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:13,375 INFO L225 Difference]: With dead ends: 4865 [2023-12-19 01:42:13,375 INFO L226 Difference]: Without dead ends: 1976 [2023-12-19 01:42:13,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 01:42:13,382 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 3453 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3471 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:13,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3471 Valid, 2272 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 2015 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:42:13,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2023-12-19 01:42:13,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1820. [2023-12-19 01:42:13,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1434 states have (on average 1.393305439330544) internal successors, (1998), 1460 states have internal predecessors, (1998), 218 states have call successors, (218), 140 states have call predecessors, (218), 166 states have return successors, (264), 222 states have call predecessors, (264), 214 states have call successors, (264) [2023-12-19 01:42:13,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2480 transitions. [2023-12-19 01:42:13,504 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2480 transitions. Word has length 58 [2023-12-19 01:42:13,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:13,504 INFO L495 AbstractCegarLoop]: Abstraction has 1820 states and 2480 transitions. [2023-12-19 01:42:13,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-19 01:42:13,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2480 transitions. [2023-12-19 01:42:13,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 01:42:13,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:13,506 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:42:13,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:42:13,506 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:13,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:13,507 INFO L85 PathProgramCache]: Analyzing trace with hash 63774575, now seen corresponding path program 1 times [2023-12-19 01:42:13,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:13,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961228994] [2023-12-19 01:42:13,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:13,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:13,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:13,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:13,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:42:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:42:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:13,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:13,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:42:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:13,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:42:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:13,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:42:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:13,627 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:42:13,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:13,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961228994] [2023-12-19 01:42:13,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961228994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:13,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:13,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:42:13,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880696374] [2023-12-19 01:42:13,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:13,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:42:13,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:13,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:42:13,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:42:13,629 INFO L87 Difference]: Start difference. First operand 1820 states and 2480 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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) [2023-12-19 01:42:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:14,673 INFO L93 Difference]: Finished difference Result 3505 states and 4742 transitions. [2023-12-19 01:42:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:42:14,674 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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 80 [2023-12-19 01:42:14,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:14,682 INFO L225 Difference]: With dead ends: 3505 [2023-12-19 01:42:14,682 INFO L226 Difference]: Without dead ends: 2000 [2023-12-19 01:42:14,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:42:14,687 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 553 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:14,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 2277 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:42:14,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2023-12-19 01:42:14,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1868. [2023-12-19 01:42:14,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1470 states have (on average 1.379591836734694) internal successors, (2028), 1496 states have internal predecessors, (2028), 218 states have call successors, (218), 140 states have call predecessors, (218), 178 states have return successors, (276), 234 states have call predecessors, (276), 214 states have call successors, (276) [2023-12-19 01:42:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2522 transitions. [2023-12-19 01:42:14,804 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2522 transitions. Word has length 80 [2023-12-19 01:42:14,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:14,805 INFO L495 AbstractCegarLoop]: Abstraction has 1868 states and 2522 transitions. [2023-12-19 01:42:14,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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) [2023-12-19 01:42:14,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2522 transitions. [2023-12-19 01:42:14,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 01:42:14,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:14,809 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:42:14,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:42:14,809 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:14,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:14,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1992047277, now seen corresponding path program 1 times [2023-12-19 01:42:14,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:14,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220262189] [2023-12-19 01:42:14,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:14,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:14,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:14,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:14,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:42:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:14,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:42:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:14,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:14,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:42:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:14,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:42:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:14,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:42:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:42:14,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:14,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220262189] [2023-12-19 01:42:14,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220262189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:14,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:14,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:42:14,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767226136] [2023-12-19 01:42:14,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:14,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:42:14,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:14,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:42:14,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:42:14,954 INFO L87 Difference]: Start difference. First operand 1868 states and 2522 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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) [2023-12-19 01:42:15,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:15,939 INFO L93 Difference]: Finished difference Result 3267 states and 4358 transitions. [2023-12-19 01:42:15,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 01:42:15,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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 80 [2023-12-19 01:42:15,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:15,948 INFO L225 Difference]: With dead ends: 3267 [2023-12-19 01:42:15,948 INFO L226 Difference]: Without dead ends: 1935 [2023-12-19 01:42:15,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-19 01:42:15,951 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 1251 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:15,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 1737 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:42:15,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2023-12-19 01:42:16,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1660. [2023-12-19 01:42:16,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 1315 states have (on average 1.3863117870722435) internal successors, (1823), 1336 states have internal predecessors, (1823), 190 states have call successors, (190), 121 states have call predecessors, (190), 153 states have return successors, (236), 204 states have call predecessors, (236), 186 states have call successors, (236) [2023-12-19 01:42:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2249 transitions. [2023-12-19 01:42:16,042 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2249 transitions. Word has length 80 [2023-12-19 01:42:16,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:16,042 INFO L495 AbstractCegarLoop]: Abstraction has 1660 states and 2249 transitions. [2023-12-19 01:42:16,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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) [2023-12-19 01:42:16,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2249 transitions. [2023-12-19 01:42:16,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 01:42:16,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:16,043 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:42:16,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:42:16,043 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:16,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1879273297, now seen corresponding path program 1 times [2023-12-19 01:42:16,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:16,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504972042] [2023-12-19 01:42:16,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:16,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:16,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:16,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:16,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:42:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:16,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:42:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:16,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:16,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:42:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:16,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:42:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:16,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:42:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:16,135 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:42:16,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:16,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504972042] [2023-12-19 01:42:16,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504972042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:16,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:16,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:16,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998576591] [2023-12-19 01:42:16,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:16,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:16,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:16,137 INFO L87 Difference]: Start difference. First operand 1660 states and 2249 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-19 01:42:16,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:16,915 INFO L93 Difference]: Finished difference Result 4560 states and 6109 transitions. [2023-12-19 01:42:16,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:42:16,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2023-12-19 01:42:16,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:16,929 INFO L225 Difference]: With dead ends: 4560 [2023-12-19 01:42:16,929 INFO L226 Difference]: Without dead ends: 3216 [2023-12-19 01:42:16,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:42:16,933 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1180 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:16,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 1473 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:42:16,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2023-12-19 01:42:17,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 3006. [2023-12-19 01:42:17,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 2341 states have (on average 1.3361811191798376) internal successors, (3128), 2391 states have internal predecessors, (3128), 351 states have call successors, (351), 234 states have call predecessors, (351), 312 states have return successors, (519), 383 states have call predecessors, (519), 347 states have call successors, (519) [2023-12-19 01:42:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 3998 transitions. [2023-12-19 01:42:17,083 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 3998 transitions. Word has length 80 [2023-12-19 01:42:17,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:17,084 INFO L495 AbstractCegarLoop]: Abstraction has 3006 states and 3998 transitions. [2023-12-19 01:42:17,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-19 01:42:17,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 3998 transitions. [2023-12-19 01:42:17,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 01:42:17,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:17,085 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:42:17,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:42:17,085 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:17,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:17,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1802372499, now seen corresponding path program 1 times [2023-12-19 01:42:17,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:17,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850907089] [2023-12-19 01:42:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:17,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:42:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:42:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:42:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:42:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:42:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-19 01:42:17,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:17,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850907089] [2023-12-19 01:42:17,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850907089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:17,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:17,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:42:17,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16667974] [2023-12-19 01:42:17,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:17,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:42:17,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:17,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:42:17,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:42:17,158 INFO L87 Difference]: Start difference. First operand 3006 states and 3998 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:42:17,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:17,742 INFO L93 Difference]: Finished difference Result 4463 states and 5855 transitions. [2023-12-19 01:42:17,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:42:17,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-12-19 01:42:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:17,748 INFO L225 Difference]: With dead ends: 4463 [2023-12-19 01:42:17,748 INFO L226 Difference]: Without dead ends: 1773 [2023-12-19 01:42:17,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:42:17,753 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 925 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:17,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 1060 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 01:42:17,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2023-12-19 01:42:17,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1660. [2023-12-19 01:42:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 1315 states have (on average 1.3581749049429659) internal successors, (1786), 1336 states have internal predecessors, (1786), 190 states have call successors, (190), 121 states have call predecessors, (190), 153 states have return successors, (236), 204 states have call predecessors, (236), 186 states have call successors, (236) [2023-12-19 01:42:17,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2212 transitions. [2023-12-19 01:42:17,821 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2212 transitions. Word has length 80 [2023-12-19 01:42:17,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:17,821 INFO L495 AbstractCegarLoop]: Abstraction has 1660 states and 2212 transitions. [2023-12-19 01:42:17,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-19 01:42:17,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2212 transitions. [2023-12-19 01:42:17,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:42:17,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:17,823 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 01:42:17,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:42:17,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:17,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:17,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1006521576, now seen corresponding path program 1 times [2023-12-19 01:42:17,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:17,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62391776] [2023-12-19 01:42:17,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:17,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:42:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:42:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:42:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:42:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 01:42:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 01:42:17,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:17,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62391776] [2023-12-19 01:42:17,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62391776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:17,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:17,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:42:17,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138025603] [2023-12-19 01:42:17,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:17,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:42:17,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:17,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:42:17,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:42:17,917 INFO L87 Difference]: Start difference. First operand 1660 states and 2212 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 01:42:19,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:19,169 INFO L93 Difference]: Finished difference Result 3881 states and 5098 transitions. [2023-12-19 01:42:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 01:42:19,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2023-12-19 01:42:19,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:19,183 INFO L225 Difference]: With dead ends: 3881 [2023-12-19 01:42:19,183 INFO L226 Difference]: Without dead ends: 2396 [2023-12-19 01:42:19,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2023-12-19 01:42:19,186 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 2570 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2611 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:19,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2611 Valid, 1501 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:42:19,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2023-12-19 01:42:19,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2232. [2023-12-19 01:42:19,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 1733 states have (on average 1.315060588574726) internal successors, (2279), 1762 states have internal predecessors, (2279), 267 states have call successors, (267), 169 states have call predecessors, (267), 230 states have return successors, (367), 302 states have call predecessors, (367), 263 states have call successors, (367) [2023-12-19 01:42:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 2913 transitions. [2023-12-19 01:42:19,276 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 2913 transitions. Word has length 81 [2023-12-19 01:42:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:19,276 INFO L495 AbstractCegarLoop]: Abstraction has 2232 states and 2913 transitions. [2023-12-19 01:42:19,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-19 01:42:19,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 2913 transitions. [2023-12-19 01:42:19,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 01:42:19,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:19,280 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 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] [2023-12-19 01:42:19,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:42:19,280 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:19,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1763909525, now seen corresponding path program 1 times [2023-12-19 01:42:19,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:19,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006918459] [2023-12-19 01:42:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:19,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:42:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:42:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:42:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:42:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:42:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 01:42:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:42:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 01:42:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:42:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:42:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:42:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 01:42:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 01:42:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 01:42:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 01:42:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-19 01:42:19,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:19,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006918459] [2023-12-19 01:42:19,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006918459] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:42:19,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261145933] [2023-12-19 01:42:19,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:19,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:42:19,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:42:19,463 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) [2023-12-19 01:42:19,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:42:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:19,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:42:19,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:42:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 01:42:19,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:42:19,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261145933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:19,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:42:19,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-19 01:42:19,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692501533] [2023-12-19 01:42:19,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:19,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:42:19,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:19,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:42:19,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:42:19,728 INFO L87 Difference]: Start difference. First operand 2232 states and 2913 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 01:42:19,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:19,909 INFO L93 Difference]: Finished difference Result 5828 states and 7412 transitions. [2023-12-19 01:42:19,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:42:19,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-12-19 01:42:19,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:19,924 INFO L225 Difference]: With dead ends: 5828 [2023-12-19 01:42:19,924 INFO L226 Difference]: Without dead ends: 3982 [2023-12-19 01:42:19,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:42:19,929 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 57 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:19,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1157 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:42:19,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2023-12-19 01:42:20,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3942. [2023-12-19 01:42:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3030 states have (on average 1.2782178217821782) internal successors, (3873), 3082 states have internal predecessors, (3873), 474 states have call successors, (474), 330 states have call predecessors, (474), 436 states have return successors, (635), 531 states have call predecessors, (635), 470 states have call successors, (635) [2023-12-19 01:42:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 4982 transitions. [2023-12-19 01:42:20,136 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 4982 transitions. Word has length 145 [2023-12-19 01:42:20,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:20,137 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 4982 transitions. [2023-12-19 01:42:20,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-19 01:42:20,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 4982 transitions. [2023-12-19 01:42:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 01:42:20,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:20,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:42:20,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 01:42:20,353 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,SelfDestructingSolverStorable10 [2023-12-19 01:42:20,353 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:20,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:20,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1791222778, now seen corresponding path program 1 times [2023-12-19 01:42:20,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:20,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101667514] [2023-12-19 01:42:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:20,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:20,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:20,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:42:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:20,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:42:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:20,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:42:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:20,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:42:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:20,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:20,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101667514] [2023-12-19 01:42:20,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101667514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:20,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:20,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:42:20,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781593125] [2023-12-19 01:42:20,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:20,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:42:20,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:20,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:42:20,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:42:20,463 INFO L87 Difference]: Start difference. First operand 3942 states and 4982 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:22,261 INFO L93 Difference]: Finished difference Result 4354 states and 5669 transitions. [2023-12-19 01:42:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:42:22,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-19 01:42:22,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:22,273 INFO L225 Difference]: With dead ends: 4354 [2023-12-19 01:42:22,273 INFO L226 Difference]: Without dead ends: 4052 [2023-12-19 01:42:22,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:42:22,278 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 950 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:22,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 801 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:42:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2023-12-19 01:42:22,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 3942. [2023-12-19 01:42:22,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3030 states have (on average 1.277887788778878) internal successors, (3872), 3082 states have internal predecessors, (3872), 474 states have call successors, (474), 330 states have call predecessors, (474), 436 states have return successors, (635), 531 states have call predecessors, (635), 470 states have call successors, (635) [2023-12-19 01:42:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 4981 transitions. [2023-12-19 01:42:22,663 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 4981 transitions. Word has length 142 [2023-12-19 01:42:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:22,664 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 4981 transitions. [2023-12-19 01:42:22,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 4981 transitions. [2023-12-19 01:42:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 01:42:22,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:22,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:42:22,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:42:22,666 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:22,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:22,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1104790916, now seen corresponding path program 1 times [2023-12-19 01:42:22,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:22,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179500682] [2023-12-19 01:42:22,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:22,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:22,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:22,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:42:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:22,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:42:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:22,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:42:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:22,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:42:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:22,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:22,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:22,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179500682] [2023-12-19 01:42:22,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179500682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:22,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:22,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:42:22,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286510086] [2023-12-19 01:42:22,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:22,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:42:22,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:22,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:42:22,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:42:22,804 INFO L87 Difference]: Start difference. First operand 3942 states and 4981 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:24,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:24,426 INFO L93 Difference]: Finished difference Result 4346 states and 5652 transitions. [2023-12-19 01:42:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:42:24,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-19 01:42:24,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:24,439 INFO L225 Difference]: With dead ends: 4346 [2023-12-19 01:42:24,439 INFO L226 Difference]: Without dead ends: 4052 [2023-12-19 01:42:24,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:42:24,442 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 941 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:24,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 799 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:42:24,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2023-12-19 01:42:24,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 3942. [2023-12-19 01:42:24,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3030 states have (on average 1.2775577557755775) internal successors, (3871), 3082 states have internal predecessors, (3871), 474 states have call successors, (474), 330 states have call predecessors, (474), 436 states have return successors, (635), 531 states have call predecessors, (635), 470 states have call successors, (635) [2023-12-19 01:42:24,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 4980 transitions. [2023-12-19 01:42:24,787 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 4980 transitions. Word has length 142 [2023-12-19 01:42:24,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:24,787 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 4980 transitions. [2023-12-19 01:42:24,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:24,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 4980 transitions. [2023-12-19 01:42:24,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 01:42:24,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:24,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:42:24,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:42:24,790 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:24,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:24,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1539296514, now seen corresponding path program 1 times [2023-12-19 01:42:24,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:24,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194762380] [2023-12-19 01:42:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:24,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:24,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:24,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:42:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:24,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:42:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:24,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:42:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:24,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:42:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:24,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:24,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194762380] [2023-12-19 01:42:24,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194762380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:24,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:24,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:42:24,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157431761] [2023-12-19 01:42:24,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:24,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:42:24,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:24,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:42:24,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:42:24,953 INFO L87 Difference]: Start difference. First operand 3942 states and 4980 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:27,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:27,363 INFO L93 Difference]: Finished difference Result 4759 states and 6342 transitions. [2023-12-19 01:42:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:42:27,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-19 01:42:27,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:27,383 INFO L225 Difference]: With dead ends: 4759 [2023-12-19 01:42:27,383 INFO L226 Difference]: Without dead ends: 4468 [2023-12-19 01:42:27,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:42:27,385 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 1494 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 2156 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:27,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 1163 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2156 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 01:42:27,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4468 states. [2023-12-19 01:42:27,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4468 to 4247. [2023-12-19 01:42:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4247 states, 3309 states have (on average 1.308854638863705) internal successors, (4331), 3362 states have internal predecessors, (4331), 493 states have call successors, (493), 336 states have call predecessors, (493), 443 states have return successors, (657), 550 states have call predecessors, (657), 489 states have call successors, (657) [2023-12-19 01:42:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 5481 transitions. [2023-12-19 01:42:27,749 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 5481 transitions. Word has length 142 [2023-12-19 01:42:27,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:27,750 INFO L495 AbstractCegarLoop]: Abstraction has 4247 states and 5481 transitions. [2023-12-19 01:42:27,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:27,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 5481 transitions. [2023-12-19 01:42:27,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 01:42:27,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:27,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:42:27,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:42:27,752 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:27,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1029322818, now seen corresponding path program 1 times [2023-12-19 01:42:27,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:27,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606026790] [2023-12-19 01:42:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:27,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:27,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:27,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:42:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:27,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:42:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:27,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:42:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:27,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:42:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:27,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:27,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606026790] [2023-12-19 01:42:27,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606026790] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:27,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:27,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:27,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813771228] [2023-12-19 01:42:27,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:27,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:27,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:27,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:27,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:27,949 INFO L87 Difference]: Start difference. First operand 4247 states and 5481 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:31,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:31,152 INFO L93 Difference]: Finished difference Result 5494 states and 7560 transitions. [2023-12-19 01:42:31,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:31,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-19 01:42:31,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:31,162 INFO L225 Difference]: With dead ends: 5494 [2023-12-19 01:42:31,162 INFO L226 Difference]: Without dead ends: 4898 [2023-12-19 01:42:31,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:31,165 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1519 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:31,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 2081 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 01:42:31,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2023-12-19 01:42:31,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 4529. [2023-12-19 01:42:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4529 states, 3565 states have (on average 1.3309957924263676) internal successors, (4745), 3619 states have internal predecessors, (4745), 512 states have call successors, (512), 342 states have call predecessors, (512), 450 states have return successors, (678), 570 states have call predecessors, (678), 508 states have call successors, (678) [2023-12-19 01:42:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 5935 transitions. [2023-12-19 01:42:31,549 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 5935 transitions. Word has length 142 [2023-12-19 01:42:31,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:31,549 INFO L495 AbstractCegarLoop]: Abstraction has 4529 states and 5935 transitions. [2023-12-19 01:42:31,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:31,550 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 5935 transitions. [2023-12-19 01:42:31,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 01:42:31,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:31,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:42:31,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:42:31,553 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:31,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:31,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1021086080, now seen corresponding path program 1 times [2023-12-19 01:42:31,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:31,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371148498] [2023-12-19 01:42:31,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:31,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:31,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:31,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:42:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:31,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:42:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:31,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:42:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:31,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:42:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:31,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:31,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:31,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371148498] [2023-12-19 01:42:31,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371148498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:31,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:31,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:31,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965515499] [2023-12-19 01:42:31,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:31,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:31,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:31,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:31,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:31,779 INFO L87 Difference]: Start difference. First operand 4529 states and 5935 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:34,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:34,944 INFO L93 Difference]: Finished difference Result 6571 states and 9334 transitions. [2023-12-19 01:42:34,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:34,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-19 01:42:34,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:34,973 INFO L225 Difference]: With dead ends: 6571 [2023-12-19 01:42:34,973 INFO L226 Difference]: Without dead ends: 5693 [2023-12-19 01:42:34,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:34,980 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1517 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3477 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:34,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 2079 Invalid, 3580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3477 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 01:42:34,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2023-12-19 01:42:35,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 5094. [2023-12-19 01:42:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 4078 states have (on average 1.3668464933791074) internal successors, (5574), 4134 states have internal predecessors, (5574), 550 states have call successors, (550), 354 states have call predecessors, (550), 464 states have return successors, (724), 610 states have call predecessors, (724), 546 states have call successors, (724) [2023-12-19 01:42:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 6848 transitions. [2023-12-19 01:42:35,387 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 6848 transitions. Word has length 142 [2023-12-19 01:42:35,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:35,387 INFO L495 AbstractCegarLoop]: Abstraction has 5094 states and 6848 transitions. [2023-12-19 01:42:35,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:35,388 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 6848 transitions. [2023-12-19 01:42:35,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 01:42:35,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:35,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:42:35,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:42:35,390 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:35,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:35,391 INFO L85 PathProgramCache]: Analyzing trace with hash -533038974, now seen corresponding path program 1 times [2023-12-19 01:42:35,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:35,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525903349] [2023-12-19 01:42:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:35,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:35,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:35,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:42:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:35,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:42:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:35,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:42:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:35,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:42:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:35,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:35,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:35,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525903349] [2023-12-19 01:42:35,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525903349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:35,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:35,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:35,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529931666] [2023-12-19 01:42:35,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:35,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:35,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:35,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:35,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:35,559 INFO L87 Difference]: Start difference. First operand 5094 states and 6848 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:38,739 INFO L93 Difference]: Finished difference Result 8636 states and 12719 transitions. [2023-12-19 01:42:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:38,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-19 01:42:38,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:38,754 INFO L225 Difference]: With dead ends: 8636 [2023-12-19 01:42:38,755 INFO L226 Difference]: Without dead ends: 7193 [2023-12-19 01:42:38,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:38,759 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1513 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3468 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:38,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 2079 Invalid, 3571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3468 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 01:42:38,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7193 states. [2023-12-19 01:42:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7193 to 6225. [2023-12-19 01:42:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6225 states, 5105 states have (on average 1.4166503428011754) internal successors, (7232), 5165 states have internal predecessors, (7232), 626 states have call successors, (626), 378 states have call predecessors, (626), 492 states have return successors, (822), 690 states have call predecessors, (822), 622 states have call successors, (822) [2023-12-19 01:42:39,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6225 states to 6225 states and 8680 transitions. [2023-12-19 01:42:39,184 INFO L78 Accepts]: Start accepts. Automaton has 6225 states and 8680 transitions. Word has length 142 [2023-12-19 01:42:39,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:39,186 INFO L495 AbstractCegarLoop]: Abstraction has 6225 states and 8680 transitions. [2023-12-19 01:42:39,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:39,186 INFO L276 IsEmpty]: Start isEmpty. Operand 6225 states and 8680 transitions. [2023-12-19 01:42:39,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 01:42:39,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:39,188 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:42:39,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:42:39,189 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:39,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:39,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1625674176, now seen corresponding path program 1 times [2023-12-19 01:42:39,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:39,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774697955] [2023-12-19 01:42:39,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:39,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:39,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:39,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:42:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:39,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:42:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:39,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:42:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:39,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:42:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:39,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:39,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774697955] [2023-12-19 01:42:39,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774697955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:39,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:39,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:39,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898094770] [2023-12-19 01:42:39,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:39,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:39,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:39,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:39,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:39,352 INFO L87 Difference]: Start difference. First operand 6225 states and 8680 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:42,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:42,573 INFO L93 Difference]: Finished difference Result 12765 states and 19505 transitions. [2023-12-19 01:42:42,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:42,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-19 01:42:42,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:42,600 INFO L225 Difference]: With dead ends: 12765 [2023-12-19 01:42:42,600 INFO L226 Difference]: Without dead ends: 10191 [2023-12-19 01:42:42,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:42,609 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1509 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3459 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:42,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 2079 Invalid, 3562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3459 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 01:42:42,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10191 states. [2023-12-19 01:42:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10191 to 8492. [2023-12-19 01:42:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8492 states, 7164 states have (on average 1.4731993299832495) internal successors, (10554), 7232 states have internal predecessors, (10554), 778 states have call successors, (778), 426 states have call predecessors, (778), 548 states have return successors, (1036), 850 states have call predecessors, (1036), 774 states have call successors, (1036) [2023-12-19 01:42:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8492 states to 8492 states and 12368 transitions. [2023-12-19 01:42:43,165 INFO L78 Accepts]: Start accepts. Automaton has 8492 states and 12368 transitions. Word has length 142 [2023-12-19 01:42:43,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:43,165 INFO L495 AbstractCegarLoop]: Abstraction has 8492 states and 12368 transitions. [2023-12-19 01:42:43,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:43,166 INFO L276 IsEmpty]: Start isEmpty. Operand 8492 states and 12368 transitions. [2023-12-19 01:42:43,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 01:42:43,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:43,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:42:43,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:42:43,170 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:43,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1387120834, now seen corresponding path program 1 times [2023-12-19 01:42:43,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:43,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410061589] [2023-12-19 01:42:43,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:43,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:43,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:43,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:42:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:42:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:42:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:42:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:43,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:43,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410061589] [2023-12-19 01:42:43,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410061589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:43,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:43,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:43,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911228641] [2023-12-19 01:42:43,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:43,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:43,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:43,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:43,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:43,335 INFO L87 Difference]: Start difference. First operand 8492 states and 12368 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:46,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:46,871 INFO L93 Difference]: Finished difference Result 21022 states and 33135 transitions. [2023-12-19 01:42:46,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:46,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-19 01:42:46,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:46,920 INFO L225 Difference]: With dead ends: 21022 [2023-12-19 01:42:46,920 INFO L226 Difference]: Without dead ends: 16181 [2023-12-19 01:42:46,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:46,936 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1511 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3445 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:46,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 2079 Invalid, 3548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3445 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 01:42:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16181 states. [2023-12-19 01:42:47,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16181 to 13039. [2023-12-19 01:42:47,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13039 states, 11295 states have (on average 1.524214254094732) internal successors, (17216), 11379 states have internal predecessors, (17216), 1082 states have call successors, (1082), 522 states have call predecessors, (1082), 660 states have return successors, (1518), 1170 states have call predecessors, (1518), 1078 states have call successors, (1518) [2023-12-19 01:42:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13039 states to 13039 states and 19816 transitions. [2023-12-19 01:42:47,676 INFO L78 Accepts]: Start accepts. Automaton has 13039 states and 19816 transitions. Word has length 142 [2023-12-19 01:42:47,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:47,676 INFO L495 AbstractCegarLoop]: Abstraction has 13039 states and 19816 transitions. [2023-12-19 01:42:47,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 13039 states and 19816 transitions. [2023-12-19 01:42:47,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 01:42:47,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:47,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:42:47,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:42:47,682 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:47,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:47,683 INFO L85 PathProgramCache]: Analyzing trace with hash -455354880, now seen corresponding path program 1 times [2023-12-19 01:42:47,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:47,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478364838] [2023-12-19 01:42:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:47,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:47,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:47,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:42:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:47,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:42:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:47,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:42:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:42:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:47,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:47,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478364838] [2023-12-19 01:42:47,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478364838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:47,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:47,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:47,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919152589] [2023-12-19 01:42:47,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:47,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:47,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:47,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:47,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:47,857 INFO L87 Difference]: Start difference. First operand 13039 states and 19816 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:51,350 INFO L93 Difference]: Finished difference Result 37504 states and 60525 transitions. [2023-12-19 01:42:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:51,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-19 01:42:51,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:51,430 INFO L225 Difference]: With dead ends: 37504 [2023-12-19 01:42:51,430 INFO L226 Difference]: Without dead ends: 28116 [2023-12-19 01:42:51,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:51,459 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1605 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2882 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 3021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:51,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 1436 Invalid, 3021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2882 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 01:42:51,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28116 states. [2023-12-19 01:42:52,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28116 to 22195. [2023-12-19 01:42:52,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22195 states, 19619 states have (on average 1.5621591314542025) internal successors, (30648), 19735 states have internal predecessors, (30648), 1690 states have call successors, (1690), 714 states have call predecessors, (1690), 884 states have return successors, (2644), 1810 states have call predecessors, (2644), 1686 states have call successors, (2644) [2023-12-19 01:42:52,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22195 states to 22195 states and 34982 transitions. [2023-12-19 01:42:52,662 INFO L78 Accepts]: Start accepts. Automaton has 22195 states and 34982 transitions. Word has length 142 [2023-12-19 01:42:52,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:52,662 INFO L495 AbstractCegarLoop]: Abstraction has 22195 states and 34982 transitions. [2023-12-19 01:42:52,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:52,663 INFO L276 IsEmpty]: Start isEmpty. Operand 22195 states and 34982 transitions. [2023-12-19 01:42:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 01:42:52,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:52,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:42:52,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:42:52,674 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:52,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash -787998018, now seen corresponding path program 1 times [2023-12-19 01:42:52,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:52,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075187124] [2023-12-19 01:42:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:52,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:52,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:52,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:42:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:52,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:42:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:52,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:42:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:52,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:42:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:52,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:52,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:52,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075187124] [2023-12-19 01:42:52,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075187124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:52,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:52,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:52,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618248060] [2023-12-19 01:42:52,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:52,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:52,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:52,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:52,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:52,826 INFO L87 Difference]: Start difference. First operand 22195 states and 34982 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:57,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:42:57,405 INFO L93 Difference]: Finished difference Result 70534 states and 116033 transitions. [2023-12-19 01:42:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:42:57,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-19 01:42:57,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:42:57,576 INFO L225 Difference]: With dead ends: 70534 [2023-12-19 01:42:57,577 INFO L226 Difference]: Without dead ends: 51990 [2023-12-19 01:42:57,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:42:57,631 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1506 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3404 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:42:57,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 2079 Invalid, 3507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3404 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 01:42:57,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51990 states. [2023-12-19 01:42:59,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51990 to 40568. [2023-12-19 01:42:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40568 states, 36328 states have (on average 1.5856088967187845) internal successors, (57602), 36508 states have internal predecessors, (57602), 2906 states have call successors, (2906), 1098 states have call predecessors, (2906), 1332 states have return successors, (5382), 3090 states have call predecessors, (5382), 2902 states have call successors, (5382) [2023-12-19 01:42:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40568 states to 40568 states and 65890 transitions. [2023-12-19 01:42:59,696 INFO L78 Accepts]: Start accepts. Automaton has 40568 states and 65890 transitions. Word has length 142 [2023-12-19 01:42:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:42:59,696 INFO L495 AbstractCegarLoop]: Abstraction has 40568 states and 65890 transitions. [2023-12-19 01:42:59,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:42:59,697 INFO L276 IsEmpty]: Start isEmpty. Operand 40568 states and 65890 transitions. [2023-12-19 01:42:59,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 01:42:59,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:42:59,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:42:59,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:42:59,717 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:42:59,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:42:59,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1140934208, now seen corresponding path program 1 times [2023-12-19 01:42:59,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:42:59,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893580268] [2023-12-19 01:42:59,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:42:59,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:42:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:59,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:42:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:59,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:42:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:59,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:42:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:59,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:42:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:59,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:42:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:42:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:42:59,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:42:59,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893580268] [2023-12-19 01:42:59,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893580268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:42:59,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:42:59,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:42:59,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785729501] [2023-12-19 01:42:59,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:42:59,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:42:59,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:42:59,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:42:59,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:42:59,921 INFO L87 Difference]: Start difference. First operand 40568 states and 65890 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:05,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:05,972 INFO L93 Difference]: Finished difference Result 136593 states and 228895 transitions. [2023-12-19 01:43:05,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:43:05,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-19 01:43:05,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:06,344 INFO L225 Difference]: With dead ends: 136593 [2023-12-19 01:43:06,344 INFO L226 Difference]: Without dead ends: 99676 [2023-12-19 01:43:06,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:43:06,427 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1505 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3391 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:06,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 2079 Invalid, 3494 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [103 Valid, 3391 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 01:43:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99676 states. [2023-12-19 01:43:10,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99676 to 77441. [2023-12-19 01:43:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77441 states, 69873 states have (on average 1.5986146293990526) internal successors, (111700), 70181 states have internal predecessors, (111700), 5338 states have call successors, (5338), 1866 states have call predecessors, (5338), 2228 states have return successors, (12316), 5650 states have call predecessors, (12316), 5334 states have call successors, (12316) [2023-12-19 01:43:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77441 states to 77441 states and 129354 transitions. [2023-12-19 01:43:10,400 INFO L78 Accepts]: Start accepts. Automaton has 77441 states and 129354 transitions. Word has length 142 [2023-12-19 01:43:10,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:10,401 INFO L495 AbstractCegarLoop]: Abstraction has 77441 states and 129354 transitions. [2023-12-19 01:43:10,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:10,401 INFO L276 IsEmpty]: Start isEmpty. Operand 77441 states and 129354 transitions. [2023-12-19 01:43:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 01:43:10,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:10,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:10,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:43:10,441 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:10,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:10,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1152146818, now seen corresponding path program 1 times [2023-12-19 01:43:10,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:10,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123288521] [2023-12-19 01:43:10,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:10,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:10,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:10,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:43:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:10,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:43:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:10,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:43:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:10,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:43:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:10,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:10,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123288521] [2023-12-19 01:43:10,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123288521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:10,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:10,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:10,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687494127] [2023-12-19 01:43:10,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:10,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:10,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:10,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:10,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:10,592 INFO L87 Difference]: Start difference. First operand 77441 states and 129354 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:19,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:19,661 INFO L93 Difference]: Finished difference Result 268712 states and 460261 transitions. [2023-12-19 01:43:19,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:43:19,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-19 01:43:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:20,536 INFO L225 Difference]: With dead ends: 268712 [2023-12-19 01:43:20,536 INFO L226 Difference]: Without dead ends: 194922 [2023-12-19 01:43:20,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:43:20,778 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1504 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3378 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:20,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 2079 Invalid, 3481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3378 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 01:43:20,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194922 states. [2023-12-19 01:43:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194922 to 151442. [2023-12-19 01:43:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151442 states, 137218 states have (on average 1.6053141716101387) internal successors, (220278), 137782 states have internal predecessors, (220278), 10202 states have call successors, (10202), 3402 states have call predecessors, (10202), 4020 states have return successors, (30558), 10770 states have call predecessors, (30558), 10198 states have call successors, (30558) [2023-12-19 01:43:29,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151442 states to 151442 states and 261038 transitions. [2023-12-19 01:43:29,186 INFO L78 Accepts]: Start accepts. Automaton has 151442 states and 261038 transitions. Word has length 142 [2023-12-19 01:43:29,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:29,186 INFO L495 AbstractCegarLoop]: Abstraction has 151442 states and 261038 transitions. [2023-12-19 01:43:29,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:29,186 INFO L276 IsEmpty]: Start isEmpty. Operand 151442 states and 261038 transitions. [2023-12-19 01:43:29,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-19 01:43:29,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:29,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:29,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:43:29,253 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:29,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:29,254 INFO L85 PathProgramCache]: Analyzing trace with hash 574998144, now seen corresponding path program 1 times [2023-12-19 01:43:29,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:29,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690782566] [2023-12-19 01:43:29,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:29,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-19 01:43:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:43:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:43:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-19 01:43:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:43:29,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:29,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690782566] [2023-12-19 01:43:29,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690782566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:29,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:29,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:29,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485256858] [2023-12-19 01:43:29,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:29,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:29,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:29,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:29,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:29,424 INFO L87 Difference]: Start difference. First operand 151442 states and 261038 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:43:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:44,773 INFO L93 Difference]: Finished difference Result 598487 states and 1046093 transitions. [2023-12-19 01:43:44,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:43:44,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 142 [2023-12-19 01:43:44,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:47,300 INFO L225 Difference]: With dead ends: 598487 [2023-12-19 01:43:47,301 INFO L226 Difference]: Without dead ends: 450696 [2023-12-19 01:43:47,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:43:47,838 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1595 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 3957 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 4062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:47,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 2072 Invalid, 4062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3957 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 01:43:48,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450696 states. [2023-12-19 01:44:02,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450696 to 298931. [2023-12-19 01:44:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298931 states, 271907 states have (on average 1.6096974333135963) internal successors, (437688), 272983 states have internal predecessors, (437688), 19418 states have call successors, (19418), 6474 states have call predecessors, (19418), 7604 states have return successors, (79652), 20498 states have call predecessors, (79652), 19414 states have call successors, (79652)