/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.14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:43:26,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:43:26,144 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 01:43:26,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:43:26,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:43:26,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:43:26,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:43:26,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:43:26,170 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:43:26,173 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:43:26,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:43:26,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:43:26,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:43:26,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:43:26,174 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:43:26,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:43:26,175 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:43:26,175 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:43:26,175 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:43:26,175 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:43:26,175 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:43:26,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:43:26,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:43:26,176 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:43:26,176 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:43:26,176 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:43:26,176 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:43:26,176 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:43:26,177 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:43:26,177 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:43:26,178 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:43:26,178 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:43:26,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:43:26,178 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:43:26,178 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:43:26,178 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:43:26,178 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:43:26,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:43:26,179 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:43:26,179 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:43:26,179 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:43:26,179 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:43:26,179 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:43:26,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:43:26,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:43:26,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:43:26,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:43:26,398 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:43:26,398 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:43:26,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.14.cil.c [2023-12-19 01:43:27,579 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:43:27,768 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:43:27,769 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.14.cil.c [2023-12-19 01:43:27,781 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4820e9cbd/f80abb6f252247e987b857d2aee13493/FLAG2bdb12cfa [2023-12-19 01:43:27,792 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4820e9cbd/f80abb6f252247e987b857d2aee13493 [2023-12-19 01:43:27,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:43:27,795 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:43:27,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:43:27,796 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:43:27,809 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:43:27,809 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:43:27" (1/1) ... [2023-12-19 01:43:27,810 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a16ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:27, skipping insertion in model container [2023-12-19 01:43:27,810 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:43:27" (1/1) ... [2023-12-19 01:43:27,858 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:43:27,967 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.14.cil.c[911,924] [2023-12-19 01:43:28,027 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.14.cil.c[8416,8429] [2023-12-19 01:43:28,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:43:28,122 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:43:28,134 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.14.cil.c[911,924] [2023-12-19 01:43:28,178 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.14.cil.c[8416,8429] [2023-12-19 01:43:28,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:43:28,273 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:43:28,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:28 WrapperNode [2023-12-19 01:43:28,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:43:28,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:43:28,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:43:28,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:43:28,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:28" (1/1) ... [2023-12-19 01:43:28,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:28" (1/1) ... [2023-12-19 01:43:28,359 INFO L138 Inliner]: procedures = 79, calls = 98, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1110 [2023-12-19 01:43:28,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:43:28,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:43:28,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:43:28,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:43:28,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:28" (1/1) ... [2023-12-19 01:43:28,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:28" (1/1) ... [2023-12-19 01:43:28,373 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:28" (1/1) ... [2023-12-19 01:43:28,390 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 01:43:28,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:28" (1/1) ... [2023-12-19 01:43:28,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:28" (1/1) ... [2023-12-19 01:43:28,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:28" (1/1) ... [2023-12-19 01:43:28,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:28" (1/1) ... [2023-12-19 01:43:28,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:28" (1/1) ... [2023-12-19 01:43:28,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:28" (1/1) ... [2023-12-19 01:43:28,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:43:28,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:43:28,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:43:28,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:43:28,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:28" (1/1) ... [2023-12-19 01:43:28,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:43:28,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:43:28,514 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 01:43:28,546 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 01:43:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:43:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-19 01:43:28,566 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-19 01:43:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-19 01:43:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-19 01:43:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-19 01:43:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-19 01:43:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-19 01:43:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-19 01:43:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-19 01:43:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-19 01:43:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-19 01:43:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-19 01:43:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-19 01:43:28,567 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-19 01:43:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-19 01:43:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-19 01:43:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-19 01:43:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-19 01:43:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-19 01:43:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-19 01:43:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-19 01:43:28,568 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-19 01:43:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:43:28,568 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-19 01:43:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-19 01:43:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-19 01:43:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-19 01:43:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:43:28,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:43:28,570 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-19 01:43:28,570 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-19 01:43:28,570 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-19 01:43:28,570 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-19 01:43:28,735 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:43:28,737 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:43:29,434 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-12-19 01:43:29,435 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 01:43:29,501 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:43:29,543 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:43:29,543 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-12-19 01:43:29,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:43:29 BoogieIcfgContainer [2023-12-19 01:43:29,543 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:43:29,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:43:29,545 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:43:29,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:43:29,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:43:27" (1/3) ... [2023-12-19 01:43:29,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dfde6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:43:29, skipping insertion in model container [2023-12-19 01:43:29,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:43:28" (2/3) ... [2023-12-19 01:43:29,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dfde6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:43:29, skipping insertion in model container [2023-12-19 01:43:29,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:43:29" (3/3) ... [2023-12-19 01:43:29,549 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.14.cil.c [2023-12-19 01:43:29,562 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:43:29,563 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:43:29,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:43:29,613 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;@2a9dc8f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:43:29,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:43:29,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 458 states, 396 states have (on average 1.7171717171717171) internal successors, (680), 404 states have internal predecessors, (680), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-19 01:43:29,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:43:29,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:29,629 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 01:43:29,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:29,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:29,634 INFO L85 PathProgramCache]: Analyzing trace with hash -396566493, now seen corresponding path program 1 times [2023-12-19 01:43:29,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:29,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535350555] [2023-12-19 01:43:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:29,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:43:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:43:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:43:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:29,978 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 01:43:29,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:29,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535350555] [2023-12-19 01:43:29,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535350555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:29,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:29,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:43:29,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146771494] [2023-12-19 01:43:29,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:29,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:43:29,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:30,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:43:30,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:43:30,016 INFO L87 Difference]: Start difference. First operand has 458 states, 396 states have (on average 1.7171717171717171) internal successors, (680), 404 states have internal predecessors, (680), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 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 01:43:30,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:30,953 INFO L93 Difference]: Finished difference Result 908 states and 1519 transitions. [2023-12-19 01:43:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:43:30,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 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 57 [2023-12-19 01:43:30,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:30,972 INFO L225 Difference]: With dead ends: 908 [2023-12-19 01:43:30,972 INFO L226 Difference]: Without dead ends: 469 [2023-12-19 01:43:30,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 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 01:43:30,984 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 750 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:30,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1493 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:43:30,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-12-19 01:43:31,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 452. [2023-12-19 01:43:31,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 393 states have (on average 1.61323155216285) internal successors, (634), 398 states have internal predecessors, (634), 44 states have call successors, (44), 15 states have call predecessors, (44), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-19 01:43:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 718 transitions. [2023-12-19 01:43:31,038 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 718 transitions. Word has length 57 [2023-12-19 01:43:31,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:31,039 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 718 transitions. [2023-12-19 01:43:31,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 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 01:43:31,039 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 718 transitions. [2023-12-19 01:43:31,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:43:31,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:31,041 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 01:43:31,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:43:31,042 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:31,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:31,042 INFO L85 PathProgramCache]: Analyzing trace with hash -381047775, now seen corresponding path program 1 times [2023-12-19 01:43:31,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:31,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339206250] [2023-12-19 01:43:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:31,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:31,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:31,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:31,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:31,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:43:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:31,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:43:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:31,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:43:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:31,185 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 01:43:31,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:31,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339206250] [2023-12-19 01:43:31,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339206250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:31,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:31,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:43:31,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655231523] [2023-12-19 01:43:31,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:31,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:43:31,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:31,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:43:31,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:43:31,188 INFO L87 Difference]: Start difference. First operand 452 states and 718 transitions. 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 01:43:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:32,167 INFO L93 Difference]: Finished difference Result 684 states and 1064 transitions. [2023-12-19 01:43:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:43:32,168 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 01:43:32,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:32,171 INFO L225 Difference]: With dead ends: 684 [2023-12-19 01:43:32,171 INFO L226 Difference]: Without dead ends: 590 [2023-12-19 01:43:32,172 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 01:43:32,172 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 1559 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:32,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 1553 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:43:32,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-12-19 01:43:32,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 553. [2023-12-19 01:43:32,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 472 states have (on average 1.5868644067796611) internal successors, (749), 479 states have internal predecessors, (749), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-19 01:43:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 864 transitions. [2023-12-19 01:43:32,202 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 864 transitions. Word has length 57 [2023-12-19 01:43:32,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:32,203 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 864 transitions. [2023-12-19 01:43:32,203 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 01:43:32,203 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 864 transitions. [2023-12-19 01:43:32,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:43:32,205 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:32,205 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 01:43:32,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:43:32,205 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:32,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:32,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1969926753, now seen corresponding path program 1 times [2023-12-19 01:43:32,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:32,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395243121] [2023-12-19 01:43:32,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:32,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:32,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:32,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:32,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:32,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:43:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:32,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:43:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:32,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:43:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:32,353 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 01:43:32,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:32,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395243121] [2023-12-19 01:43:32,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395243121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:32,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:32,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:43:32,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693977271] [2023-12-19 01:43:32,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:32,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:43:32,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:32,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:43:32,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:43:32,356 INFO L87 Difference]: Start difference. First operand 553 states and 864 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 01:43:33,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:33,496 INFO L93 Difference]: Finished difference Result 914 states and 1393 transitions. [2023-12-19 01:43:33,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 01:43:33,500 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 01:43:33,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:33,503 INFO L225 Difference]: With dead ends: 914 [2023-12-19 01:43:33,503 INFO L226 Difference]: Without dead ends: 726 [2023-12-19 01:43:33,504 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 01:43:33,505 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1390 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:33,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 2142 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:43:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-12-19 01:43:33,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 654. [2023-12-19 01:43:33,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 551 states have (on average 1.5662431941923776) internal successors, (863), 560 states have internal predecessors, (863), 70 states have call successors, (70), 29 states have call predecessors, (70), 31 states have return successors, (79), 68 states have call predecessors, (79), 66 states have call successors, (79) [2023-12-19 01:43:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1012 transitions. [2023-12-19 01:43:33,558 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1012 transitions. Word has length 57 [2023-12-19 01:43:33,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:33,559 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 1012 transitions. [2023-12-19 01:43:33,559 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 01:43:33,559 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1012 transitions. [2023-12-19 01:43:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 01:43:33,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:33,561 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 01:43:33,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:43:33,561 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:33,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:33,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1431554205, now seen corresponding path program 1 times [2023-12-19 01:43:33,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:33,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816245245] [2023-12-19 01:43:33,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:33,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:33,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:33,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:33,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:33,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:33,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:43:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:33,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:43:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:33,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:43:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:33,674 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 01:43:33,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:33,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816245245] [2023-12-19 01:43:33,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816245245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:33,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:33,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:43:33,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351341902] [2023-12-19 01:43:33,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:33,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:43:33,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:33,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:43:33,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:43:33,677 INFO L87 Difference]: Start difference. First operand 654 states and 1012 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 01:43:35,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:35,315 INFO L93 Difference]: Finished difference Result 2052 states and 3061 transitions. [2023-12-19 01:43:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 01:43:35,316 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 01:43:35,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:35,325 INFO L225 Difference]: With dead ends: 2052 [2023-12-19 01:43:35,325 INFO L226 Difference]: Without dead ends: 1751 [2023-12-19 01:43:35,329 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 01:43:35,332 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 3657 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3675 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:35,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3675 Valid, 2391 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:43:35,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2023-12-19 01:43:35,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1618. [2023-12-19 01:43:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1310 states have (on average 1.465648854961832) internal successors, (1920), 1334 states have internal predecessors, (1920), 180 states have call successors, (180), 112 states have call predecessors, (180), 126 states have return successors, (212), 174 states have call predecessors, (212), 176 states have call successors, (212) [2023-12-19 01:43:35,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2312 transitions. [2023-12-19 01:43:35,414 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2312 transitions. Word has length 57 [2023-12-19 01:43:35,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:35,414 INFO L495 AbstractCegarLoop]: Abstraction has 1618 states and 2312 transitions. [2023-12-19 01:43:35,415 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 01:43:35,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2312 transitions. [2023-12-19 01:43:35,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:43:35,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:35,416 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 01:43:35,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:43:35,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:35,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:35,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1917518946, now seen corresponding path program 1 times [2023-12-19 01:43:35,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:35,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79759434] [2023-12-19 01:43:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:35,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:35,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:35,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:35,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:35,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:35,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:35,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 01:43:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:35,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:43:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:35,515 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 01:43:35,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:35,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79759434] [2023-12-19 01:43:35,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79759434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:35,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:35,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:43:35,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515020628] [2023-12-19 01:43:35,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:35,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:43:35,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:35,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:43:35,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:43:35,517 INFO L87 Difference]: Start difference. First operand 1618 states and 2312 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 01:43:36,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:36,583 INFO L93 Difference]: Finished difference Result 3015 states and 4260 transitions. [2023-12-19 01:43:36,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:43:36,583 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 01:43:36,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:36,591 INFO L225 Difference]: With dead ends: 3015 [2023-12-19 01:43:36,591 INFO L226 Difference]: Without dead ends: 1756 [2023-12-19 01:43:36,594 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 01:43:36,595 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 636 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:36,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 2541 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 01:43:36,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-12-19 01:43:36,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1650. [2023-12-19 01:43:36,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1334 states have (on average 1.4527736131934033) internal successors, (1938), 1358 states have internal predecessors, (1938), 180 states have call successors, (180), 112 states have call predecessors, (180), 134 states have return successors, (220), 182 states have call predecessors, (220), 176 states have call successors, (220) [2023-12-19 01:43:36,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2338 transitions. [2023-12-19 01:43:36,678 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2338 transitions. Word has length 58 [2023-12-19 01:43:36,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:36,678 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2338 transitions. [2023-12-19 01:43:36,678 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 01:43:36,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2338 transitions. [2023-12-19 01:43:36,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:43:36,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:36,679 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 01:43:36,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:43:36,679 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:36,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:36,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1989905504, now seen corresponding path program 1 times [2023-12-19 01:43:36,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:36,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005383346] [2023-12-19 01:43:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:36,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:36,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:36,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:36,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:36,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:36,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 01:43:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:36,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-19 01:43:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:36,809 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 01:43:36,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:36,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005383346] [2023-12-19 01:43:36,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005383346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:36,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:36,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:43:36,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787487194] [2023-12-19 01:43:36,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:36,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:43:36,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:36,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:43:36,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:43:36,811 INFO L87 Difference]: Start difference. First operand 1650 states and 2338 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 01:43:38,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:38,253 INFO L93 Difference]: Finished difference Result 4909 states and 6899 transitions. [2023-12-19 01:43:38,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 01:43:38,253 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 01:43:38,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:38,294 INFO L225 Difference]: With dead ends: 4909 [2023-12-19 01:43:38,294 INFO L226 Difference]: Without dead ends: 2020 [2023-12-19 01:43:38,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 01:43:38,318 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 4193 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4211 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 2720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:38,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4211 Valid, 2092 Invalid, 2720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:43:38,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2023-12-19 01:43:38,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 1864. [2023-12-19 01:43:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1476 states have (on average 1.4004065040650406) internal successors, (2067), 1502 states have internal predecessors, (2067), 220 states have call successors, (220), 140 states have call predecessors, (220), 166 states have return successors, (266), 224 states have call predecessors, (266), 216 states have call successors, (266) [2023-12-19 01:43:38,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2553 transitions. [2023-12-19 01:43:38,445 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2553 transitions. Word has length 58 [2023-12-19 01:43:38,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:38,445 INFO L495 AbstractCegarLoop]: Abstraction has 1864 states and 2553 transitions. [2023-12-19 01:43:38,445 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 01:43:38,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2553 transitions. [2023-12-19 01:43:38,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 01:43:38,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:38,447 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 01:43:38,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:43:38,449 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:38,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:38,451 INFO L85 PathProgramCache]: Analyzing trace with hash -638490220, now seen corresponding path program 1 times [2023-12-19 01:43:38,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:38,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893620567] [2023-12-19 01:43:38,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:38,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:38,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:38,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:38,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:38,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:38,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:38,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:43:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:38,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:43:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:38,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:43:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:38,577 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 01:43:38,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:38,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893620567] [2023-12-19 01:43:38,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893620567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:38,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:38,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:43:38,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914158861] [2023-12-19 01:43:38,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:38,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:43:38,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:38,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:43:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:43:38,579 INFO L87 Difference]: Start difference. First operand 1864 states and 2553 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 01:43:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:39,389 INFO L93 Difference]: Finished difference Result 3549 states and 4815 transitions. [2023-12-19 01:43:39,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:43:39,389 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 01:43:39,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:39,432 INFO L225 Difference]: With dead ends: 3549 [2023-12-19 01:43:39,432 INFO L226 Difference]: Without dead ends: 2044 [2023-12-19 01:43:39,435 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 01:43:39,436 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 629 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:39,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 2505 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:43:39,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2023-12-19 01:43:39,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1912. [2023-12-19 01:43:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1512 states have (on average 1.3869047619047619) internal successors, (2097), 1538 states have internal predecessors, (2097), 220 states have call successors, (220), 140 states have call predecessors, (220), 178 states have return successors, (278), 236 states have call predecessors, (278), 216 states have call successors, (278) [2023-12-19 01:43:39,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 2595 transitions. [2023-12-19 01:43:39,561 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 2595 transitions. Word has length 80 [2023-12-19 01:43:39,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:39,561 INFO L495 AbstractCegarLoop]: Abstraction has 1912 states and 2595 transitions. [2023-12-19 01:43:39,561 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 01:43:39,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 2595 transitions. [2023-12-19 01:43:39,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 01:43:39,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:39,562 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 01:43:39,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:43:39,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:39,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:39,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1289782482, now seen corresponding path program 1 times [2023-12-19 01:43:39,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:39,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694872622] [2023-12-19 01:43:39,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:39,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:39,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:39,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:39,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:39,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:43:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:43:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:39,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:43:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:39,759 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 01:43:39,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:39,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694872622] [2023-12-19 01:43:39,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694872622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:39,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:39,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:43:39,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723975840] [2023-12-19 01:43:39,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:39,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:43:39,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:39,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:43:39,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:43:39,761 INFO L87 Difference]: Start difference. First operand 1912 states and 2595 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 01:43:40,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:40,555 INFO L93 Difference]: Finished difference Result 3311 states and 4431 transitions. [2023-12-19 01:43:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 01:43:40,556 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 01:43:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:40,563 INFO L225 Difference]: With dead ends: 3311 [2023-12-19 01:43:40,563 INFO L226 Difference]: Without dead ends: 1979 [2023-12-19 01:43:40,566 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 01:43:40,566 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1735 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:40,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1766 Valid, 1603 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:43:40,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2023-12-19 01:43:40,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1704. [2023-12-19 01:43:40,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1357 states have (on average 1.3942520265291083) internal successors, (1892), 1378 states have internal predecessors, (1892), 192 states have call successors, (192), 121 states have call predecessors, (192), 153 states have return successors, (238), 206 states have call predecessors, (238), 188 states have call successors, (238) [2023-12-19 01:43:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2322 transitions. [2023-12-19 01:43:40,632 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2322 transitions. Word has length 80 [2023-12-19 01:43:40,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:40,632 INFO L495 AbstractCegarLoop]: Abstraction has 1704 states and 2322 transitions. [2023-12-19 01:43:40,632 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 01:43:40,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2322 transitions. [2023-12-19 01:43:40,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 01:43:40,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:40,633 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 01:43:40,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:43:40,633 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:40,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:40,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1713429204, now seen corresponding path program 1 times [2023-12-19 01:43:40,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:40,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133809332] [2023-12-19 01:43:40,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:40,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:40,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:40,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:40,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:40,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:40,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:40,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:43:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:40,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:43:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:40,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:43:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:40,696 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 01:43:40,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:40,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133809332] [2023-12-19 01:43:40,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133809332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:40,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:40,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:40,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704312986] [2023-12-19 01:43:40,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:40,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:40,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:40,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:40,698 INFO L87 Difference]: Start difference. First operand 1704 states and 2322 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 01:43:41,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:41,177 INFO L93 Difference]: Finished difference Result 3153 states and 4251 transitions. [2023-12-19 01:43:41,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 01:43:41,178 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 01:43:41,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:41,184 INFO L225 Difference]: With dead ends: 3153 [2023-12-19 01:43:41,185 INFO L226 Difference]: Without dead ends: 1809 [2023-12-19 01:43:41,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-12-19 01:43:41,205 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1870 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:41,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1904 Valid, 891 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 01:43:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2023-12-19 01:43:41,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1704. [2023-12-19 01:43:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1357 states have (on average 1.367722918201916) internal successors, (1856), 1378 states have internal predecessors, (1856), 192 states have call successors, (192), 121 states have call predecessors, (192), 153 states have return successors, (238), 206 states have call predecessors, (238), 188 states have call successors, (238) [2023-12-19 01:43:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2286 transitions. [2023-12-19 01:43:41,375 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2286 transitions. Word has length 80 [2023-12-19 01:43:41,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:41,375 INFO L495 AbstractCegarLoop]: Abstraction has 1704 states and 2286 transitions. [2023-12-19 01:43:41,375 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 01:43:41,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2286 transitions. [2023-12-19 01:43:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-19 01:43:41,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:41,376 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 01:43:41,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:43:41,376 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:41,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:41,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1809860207, now seen corresponding path program 1 times [2023-12-19 01:43:41,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:41,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949383695] [2023-12-19 01:43:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:41,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:43:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:43:41,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 01:43:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:41,524 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 01:43:41,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:41,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949383695] [2023-12-19 01:43:41,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949383695] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:41,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:41,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:43:41,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335478557] [2023-12-19 01:43:41,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:41,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:43:41,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:41,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:43:41,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:43:41,526 INFO L87 Difference]: Start difference. First operand 1704 states and 2286 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 01:43:42,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:42,529 INFO L93 Difference]: Finished difference Result 3925 states and 5172 transitions. [2023-12-19 01:43:42,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-19 01:43:42,530 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 01:43:42,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:42,538 INFO L225 Difference]: With dead ends: 3925 [2023-12-19 01:43:42,538 INFO L226 Difference]: Without dead ends: 2440 [2023-12-19 01:43:42,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2023-12-19 01:43:42,541 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 2794 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:42,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2837 Valid, 1645 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:43:42,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2023-12-19 01:43:42,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2276. [2023-12-19 01:43:42,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 1775 states have (on average 1.3233802816901408) internal successors, (2349), 1804 states have internal predecessors, (2349), 269 states have call successors, (269), 169 states have call predecessors, (269), 230 states have return successors, (369), 304 states have call predecessors, (369), 265 states have call successors, (369) [2023-12-19 01:43:42,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 2987 transitions. [2023-12-19 01:43:42,676 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 2987 transitions. Word has length 81 [2023-12-19 01:43:42,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:42,677 INFO L495 AbstractCegarLoop]: Abstraction has 2276 states and 2987 transitions. [2023-12-19 01:43:42,677 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 01:43:42,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 2987 transitions. [2023-12-19 01:43:42,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 01:43:42,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:42,679 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 01:43:42,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:43:42,679 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:42,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:42,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1131838132, now seen corresponding path program 1 times [2023-12-19 01:43:42,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:42,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332451589] [2023-12-19 01:43:42,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:42,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:43:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:43:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 01:43:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:43:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 01:43:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:43:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:43:42,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-19 01:43:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-19 01:43:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 01:43:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-19 01:43:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,804 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 01:43:42,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:42,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332451589] [2023-12-19 01:43:42,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332451589] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:43:42,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384581514] [2023-12-19 01:43:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:42,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:43:42,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:43:42,807 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 01:43:42,850 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 01:43:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:42,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:43:42,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:43:43,071 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 01:43:43,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:43:43,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384581514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:43,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:43:43,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-19 01:43:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272304993] [2023-12-19 01:43:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:43,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:43:43,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:43:43,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:43:43,073 INFO L87 Difference]: Start difference. First operand 2276 states and 2987 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 01:43:43,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:43,273 INFO L93 Difference]: Finished difference Result 5872 states and 7486 transitions. [2023-12-19 01:43:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:43:43,273 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 01:43:43,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:43,285 INFO L225 Difference]: With dead ends: 5872 [2023-12-19 01:43:43,285 INFO L226 Difference]: Without dead ends: 4026 [2023-12-19 01:43:43,288 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 01:43:43,289 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 57 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:43,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1327 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:43:43,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2023-12-19 01:43:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3986. [2023-12-19 01:43:43,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3986 states, 3072 states have (on average 1.2835286458333333) internal successors, (3943), 3124 states have internal predecessors, (3943), 476 states have call successors, (476), 330 states have call predecessors, (476), 436 states have return successors, (637), 533 states have call predecessors, (637), 472 states have call successors, (637) [2023-12-19 01:43:43,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 5056 transitions. [2023-12-19 01:43:43,448 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 5056 transitions. Word has length 145 [2023-12-19 01:43:43,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:43,449 INFO L495 AbstractCegarLoop]: Abstraction has 3986 states and 5056 transitions. [2023-12-19 01:43:43,450 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 01:43:43,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 5056 transitions. [2023-12-19 01:43:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 01:43:43,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:43,453 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:43,460 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 01:43:43,660 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 01:43:43,661 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:43,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:43,661 INFO L85 PathProgramCache]: Analyzing trace with hash 776960780, now seen corresponding path program 1 times [2023-12-19 01:43:43,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:43,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162887569] [2023-12-19 01:43:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:43,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:43:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:43:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 01:43:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:43:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 01:43:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:43:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 01:43:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:43:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 01:43:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 01:43:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:43:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-19 01:43:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-19 01:43:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-19 01:43:43,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:43,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162887569] [2023-12-19 01:43:43,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162887569] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:43:43,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684029224] [2023-12-19 01:43:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:43,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:43:43,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:43:43,827 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:43:43,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:43:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:43,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:43:43,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:43:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-19 01:43:44,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:43:44,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684029224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:44,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:43:44,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-19 01:43:44,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276954776] [2023-12-19 01:43:44,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:44,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:43:44,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:44,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:43:44,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:43:44,175 INFO L87 Difference]: Start difference. First operand 3986 states and 5056 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-19 01:43:44,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:44,529 INFO L93 Difference]: Finished difference Result 11238 states and 13996 transitions. [2023-12-19 01:43:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:43:44,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 175 [2023-12-19 01:43:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:44,565 INFO L225 Difference]: With dead ends: 11238 [2023-12-19 01:43:44,565 INFO L226 Difference]: Without dead ends: 7612 [2023-12-19 01:43:44,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 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 01:43:44,573 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 48 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:44,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1296 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:43:44,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7612 states. [2023-12-19 01:43:44,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7612 to 7604. [2023-12-19 01:43:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7604 states, 5818 states have (on average 1.2567892746648333) internal successors, (7312), 5917 states have internal predecessors, (7312), 918 states have call successors, (918), 652 states have call predecessors, (918), 866 states have return successors, (1244), 1036 states have call predecessors, (1244), 914 states have call successors, (1244) [2023-12-19 01:43:44,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7604 states to 7604 states and 9474 transitions. [2023-12-19 01:43:44,997 INFO L78 Accepts]: Start accepts. Automaton has 7604 states and 9474 transitions. Word has length 175 [2023-12-19 01:43:44,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:44,997 INFO L495 AbstractCegarLoop]: Abstraction has 7604 states and 9474 transitions. [2023-12-19 01:43:44,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-19 01:43:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 7604 states and 9474 transitions. [2023-12-19 01:43:45,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-19 01:43:45,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:45,003 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:45,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 01:43:45,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 01:43:45,210 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:45,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:45,210 INFO L85 PathProgramCache]: Analyzing trace with hash 382593994, now seen corresponding path program 1 times [2023-12-19 01:43:45,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:45,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705284667] [2023-12-19 01:43:45,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:45,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:43:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:43:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-19 01:43:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-19 01:43:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-19 01:43:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-19 01:43:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-19 01:43:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-19 01:43:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-19 01:43:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-19 01:43:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-19 01:43:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-19 01:43:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:43:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:43:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-19 01:43:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-19 01:43:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,361 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-19 01:43:45,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:45,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705284667] [2023-12-19 01:43:45,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705284667] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:43:45,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926383337] [2023-12-19 01:43:45,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:45,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:43:45,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:43:45,378 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:43:45,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:43:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:45,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 01:43:45,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:43:45,651 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-19 01:43:45,651 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:43:45,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926383337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:45,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:43:45,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-19 01:43:45,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729172040] [2023-12-19 01:43:45,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:45,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:43:45,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:45,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:43:45,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:43:45,653 INFO L87 Difference]: Start difference. First operand 7604 states and 9474 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 01:43:45,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:45,998 INFO L93 Difference]: Finished difference Result 13590 states and 17146 transitions. [2023-12-19 01:43:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:43:45,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 175 [2023-12-19 01:43:45,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:46,001 INFO L225 Difference]: With dead ends: 13590 [2023-12-19 01:43:46,001 INFO L226 Difference]: Without dead ends: 352 [2023-12-19 01:43:46,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 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 01:43:46,017 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 596 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:46,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 641 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:43:46,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-19 01:43:46,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2023-12-19 01:43:46,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 317 states have (on average 1.637223974763407) internal successors, (519), 319 states have internal predecessors, (519), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 01:43:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 573 transitions. [2023-12-19 01:43:46,026 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 573 transitions. Word has length 175 [2023-12-19 01:43:46,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:46,026 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 573 transitions. [2023-12-19 01:43:46,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-19 01:43:46,026 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 573 transitions. [2023-12-19 01:43:46,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:43:46,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:46,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:46,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:43:46,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:43:46,233 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:46,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:46,234 INFO L85 PathProgramCache]: Analyzing trace with hash 971192510, now seen corresponding path program 1 times [2023-12-19 01:43:46,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:46,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747570901] [2023-12-19 01:43:46,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:46,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:46,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:46,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:46,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:46,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:46,377 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 01:43:46,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:46,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747570901] [2023-12-19 01:43:46,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747570901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:46,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:46,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:43:46,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603190741] [2023-12-19 01:43:46,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:46,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:43:46,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:46,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:43:46,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:43:46,379 INFO L87 Difference]: Start difference. First operand 352 states and 573 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 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 01:43:47,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:47,849 INFO L93 Difference]: Finished difference Result 829 states and 1372 transitions. [2023-12-19 01:43:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 01:43:47,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 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 162 [2023-12-19 01:43:47,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:47,851 INFO L225 Difference]: With dead ends: 829 [2023-12-19 01:43:47,851 INFO L226 Difference]: Without dead ends: 482 [2023-12-19 01:43:47,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:43:47,852 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 987 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:47,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 639 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 01:43:47,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-19 01:43:47,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 352. [2023-12-19 01:43:47,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 317 states have (on average 1.6340694006309149) internal successors, (518), 319 states have internal predecessors, (518), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 01:43:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 572 transitions. [2023-12-19 01:43:47,868 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 572 transitions. Word has length 162 [2023-12-19 01:43:47,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:47,868 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 572 transitions. [2023-12-19 01:43:47,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 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 01:43:47,868 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 572 transitions. [2023-12-19 01:43:47,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:43:47,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:47,869 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:47,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:43:47,869 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:47,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:47,870 INFO L85 PathProgramCache]: Analyzing trace with hash -9762304, now seen corresponding path program 1 times [2023-12-19 01:43:47,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:47,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185437870] [2023-12-19 01:43:47,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:47,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:47,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:47,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:47,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:48,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:48,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:48,034 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 01:43:48,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:48,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185437870] [2023-12-19 01:43:48,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185437870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:48,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:48,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:43:48,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870400260] [2023-12-19 01:43:48,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:48,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:43:48,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:48,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:43:48,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:43:48,036 INFO L87 Difference]: Start difference. First operand 352 states and 572 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 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 01:43:49,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:49,037 INFO L93 Difference]: Finished difference Result 821 states and 1355 transitions. [2023-12-19 01:43:49,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 01:43:49,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 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 162 [2023-12-19 01:43:49,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:49,040 INFO L225 Difference]: With dead ends: 821 [2023-12-19 01:43:49,040 INFO L226 Difference]: Without dead ends: 482 [2023-12-19 01:43:49,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:43:49,042 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 978 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:49,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 637 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:43:49,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-19 01:43:49,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 352. [2023-12-19 01:43:49,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 317 states have (on average 1.6309148264984228) internal successors, (517), 319 states have internal predecessors, (517), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-19 01:43:49,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 571 transitions. [2023-12-19 01:43:49,053 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 571 transitions. Word has length 162 [2023-12-19 01:43:49,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:49,053 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 571 transitions. [2023-12-19 01:43:49,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 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 01:43:49,053 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 571 transitions. [2023-12-19 01:43:49,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:43:49,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:49,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:49,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:43:49,055 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:49,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:49,055 INFO L85 PathProgramCache]: Analyzing trace with hash 254885186, now seen corresponding path program 1 times [2023-12-19 01:43:49,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:49,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511646883] [2023-12-19 01:43:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:49,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:49,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:49,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:49,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:49,320 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 01:43:49,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:49,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511646883] [2023-12-19 01:43:49,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511646883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:49,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:49,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:43:49,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558648510] [2023-12-19 01:43:49,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:49,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:43:49,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:49,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:43:49,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:43:49,322 INFO L87 Difference]: Start difference. First operand 352 states and 571 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 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 01:43:51,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:51,043 INFO L93 Difference]: Finished difference Result 1297 states and 2153 transitions. [2023-12-19 01:43:51,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:43:51,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 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 162 [2023-12-19 01:43:51,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:51,047 INFO L225 Difference]: With dead ends: 1297 [2023-12-19 01:43:51,048 INFO L226 Difference]: Without dead ends: 964 [2023-12-19 01:43:51,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:43:51,049 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1494 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:51,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1077 Invalid, 2413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 01:43:51,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2023-12-19 01:43:51,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 703. [2023-12-19 01:43:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 640 states have (on average 1.6421875) internal successors, (1051), 643 states have internal predecessors, (1051), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-12-19 01:43:51,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1150 transitions. [2023-12-19 01:43:51,097 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1150 transitions. Word has length 162 [2023-12-19 01:43:51,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:51,097 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1150 transitions. [2023-12-19 01:43:51,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 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 01:43:51,097 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1150 transitions. [2023-12-19 01:43:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:43:51,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:51,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:51,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:43:51,098 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:51,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:51,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1950483198, now seen corresponding path program 1 times [2023-12-19 01:43:51,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:51,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435796046] [2023-12-19 01:43:51,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:51,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:51,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:51,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:51,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:51,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:51,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:51,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:51,293 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 01:43:51,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:51,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435796046] [2023-12-19 01:43:51,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435796046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:51,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:51,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:51,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278733765] [2023-12-19 01:43:51,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:51,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:51,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:51,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:51,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:51,294 INFO L87 Difference]: Start difference. First operand 703 states and 1150 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:43:54,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:54,456 INFO L93 Difference]: Finished difference Result 2150 states and 3577 transitions. [2023-12-19 01:43:54,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:43:54,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:43:54,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:54,462 INFO L225 Difference]: With dead ends: 2150 [2023-12-19 01:43:54,462 INFO L226 Difference]: Without dead ends: 1466 [2023-12-19 01:43:54,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:43:54,464 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1640 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 3246 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 3348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:54,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 1422 Invalid, 3348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3246 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 01:43:54,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2023-12-19 01:43:54,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1028. [2023-12-19 01:43:54,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 937 states have (on average 1.6360725720384204) internal successors, (1533), 941 states have internal predecessors, (1533), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2023-12-19 01:43:54,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1676 transitions. [2023-12-19 01:43:54,502 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1676 transitions. Word has length 162 [2023-12-19 01:43:54,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:54,503 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1676 transitions. [2023-12-19 01:43:54,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:43:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1676 transitions. [2023-12-19 01:43:54,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:43:54,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:54,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:54,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 01:43:54,504 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:54,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:54,505 INFO L85 PathProgramCache]: Analyzing trace with hash 556614276, now seen corresponding path program 1 times [2023-12-19 01:43:54,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:54,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634430677] [2023-12-19 01:43:54,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:54,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:54,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:54,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:54,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:54,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:54,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:54,691 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 01:43:54,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634430677] [2023-12-19 01:43:54,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634430677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:54,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:54,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:54,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008576557] [2023-12-19 01:43:54,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:54,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:54,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:54,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:54,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:54,693 INFO L87 Difference]: Start difference. First operand 1028 states and 1676 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:43:57,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:43:57,807 INFO L93 Difference]: Finished difference Result 3398 states and 5643 transitions. [2023-12-19 01:43:57,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:43:57,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:43:57,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:43:57,823 INFO L225 Difference]: With dead ends: 3398 [2023-12-19 01:43:57,823 INFO L226 Difference]: Without dead ends: 2389 [2023-12-19 01:43:57,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:43:57,826 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1535 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3712 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:43:57,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 2051 Invalid, 3780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3712 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 01:43:57,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2023-12-19 01:43:57,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1681. [2023-12-19 01:43:57,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1534 states have (on average 1.6310299869621903) internal successors, (2502), 1540 states have internal predecessors, (2502), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-19 01:43:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2737 transitions. [2023-12-19 01:43:57,922 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2737 transitions. Word has length 162 [2023-12-19 01:43:57,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:43:57,922 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2737 transitions. [2023-12-19 01:43:57,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:43:57,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2737 transitions. [2023-12-19 01:43:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:43:57,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:43:57,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:43:57,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:43:57,924 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:43:57,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:43:57,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1579268926, now seen corresponding path program 1 times [2023-12-19 01:43:57,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:43:57,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598361089] [2023-12-19 01:43:57,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:43:57,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:43:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:57,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:43:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:58,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:43:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:58,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:43:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:58,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:43:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:58,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:43:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:43:58,115 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 01:43:58,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:43:58,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598361089] [2023-12-19 01:43:58,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598361089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:43:58,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:43:58,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:43:58,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067327737] [2023-12-19 01:43:58,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:43:58,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:43:58,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:43:58,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:43:58,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:43:58,117 INFO L87 Difference]: Start difference. First operand 1681 states and 2737 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:44:01,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:44:01,314 INFO L93 Difference]: Finished difference Result 5797 states and 9596 transitions. [2023-12-19 01:44:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:44:01,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:44:01,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:44:01,327 INFO L225 Difference]: With dead ends: 5797 [2023-12-19 01:44:01,327 INFO L226 Difference]: Without dead ends: 4135 [2023-12-19 01:44:01,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:44:01,333 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1530 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3700 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:44:01,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 2051 Invalid, 3768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3700 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 01:44:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2023-12-19 01:44:01,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 2990. [2023-12-19 01:44:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 2731 states have (on average 1.6272427682167705) internal successors, (4444), 2741 states have internal predecessors, (4444), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-19 01:44:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 4869 transitions. [2023-12-19 01:44:01,456 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 4869 transitions. Word has length 162 [2023-12-19 01:44:01,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:44:01,457 INFO L495 AbstractCegarLoop]: Abstraction has 2990 states and 4869 transitions. [2023-12-19 01:44:01,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:44:01,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 4869 transitions. [2023-12-19 01:44:01,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:44:01,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:44:01,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:44:01,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:44:01,460 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:44:01,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:44:01,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1509621052, now seen corresponding path program 1 times [2023-12-19 01:44:01,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:44:01,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108297437] [2023-12-19 01:44:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:44:01,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:44:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:01,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:44:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:01,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:44:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:01,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:44:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:01,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:44:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:01,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:44:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:44:01,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:44:01,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108297437] [2023-12-19 01:44:01,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108297437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:44:01,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:44:01,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:44:01,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380656755] [2023-12-19 01:44:01,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:44:01,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:44:01,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:44:01,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:44:01,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:44:01,674 INFO L87 Difference]: Start difference. First operand 2990 states and 4869 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:44:04,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:44:04,735 INFO L93 Difference]: Finished difference Result 10596 states and 17522 transitions. [2023-12-19 01:44:04,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:44:04,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:44:04,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:44:04,756 INFO L225 Difference]: With dead ends: 10596 [2023-12-19 01:44:04,756 INFO L226 Difference]: Without dead ends: 7625 [2023-12-19 01:44:04,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:44:04,764 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1529 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:44:04,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 2051 Invalid, 3755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3687 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 01:44:04,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2023-12-19 01:44:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 5615. [2023-12-19 01:44:04,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5132 states have (on average 1.6247077162899455) internal successors, (8338), 5150 states have internal predecessors, (8338), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2023-12-19 01:44:04,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 9161 transitions. [2023-12-19 01:44:04,997 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 9161 transitions. Word has length 162 [2023-12-19 01:44:04,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:44:04,997 INFO L495 AbstractCegarLoop]: Abstraction has 5615 states and 9161 transitions. [2023-12-19 01:44:04,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:44:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 9161 transitions. [2023-12-19 01:44:05,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:44:05,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:44:05,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:44:05,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:44:05,003 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:44:05,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:44:05,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1091732350, now seen corresponding path program 1 times [2023-12-19 01:44:05,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:44:05,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818030541] [2023-12-19 01:44:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:44:05,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:44:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:44:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:05,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:44:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:44:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:05,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:44:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:05,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:44:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:05,183 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 01:44:05,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:44:05,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818030541] [2023-12-19 01:44:05,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818030541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:44:05,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:44:05,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:44:05,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675735180] [2023-12-19 01:44:05,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:44:05,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:44:05,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:44:05,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:44:05,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:44:05,186 INFO L87 Difference]: Start difference. First operand 5615 states and 9161 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:44:08,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:44:08,234 INFO L93 Difference]: Finished difference Result 20195 states and 33436 transitions. [2023-12-19 01:44:08,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:44:08,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:44:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:44:08,275 INFO L225 Difference]: With dead ends: 20195 [2023-12-19 01:44:08,276 INFO L226 Difference]: Without dead ends: 14599 [2023-12-19 01:44:08,290 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 01:44:08,291 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1528 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3674 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 01:44:08,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 2051 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3674 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 01:44:08,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14599 states. [2023-12-19 01:44:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14599 to 10880. [2023-12-19 01:44:08,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10880 states, 9949 states have (on average 1.6230776962508795) internal successors, (16148), 9983 states have internal predecessors, (16148), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2023-12-19 01:44:08,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10880 states to 10880 states and 17821 transitions. [2023-12-19 01:44:08,783 INFO L78 Accepts]: Start accepts. Automaton has 10880 states and 17821 transitions. Word has length 162 [2023-12-19 01:44:08,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:44:08,783 INFO L495 AbstractCegarLoop]: Abstraction has 10880 states and 17821 transitions. [2023-12-19 01:44:08,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:44:08,783 INFO L276 IsEmpty]: Start isEmpty. Operand 10880 states and 17821 transitions. [2023-12-19 01:44:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:44:08,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:44:08,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:44:08,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:44:08,790 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:44:08,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:44:08,791 INFO L85 PathProgramCache]: Analyzing trace with hash 307221252, now seen corresponding path program 1 times [2023-12-19 01:44:08,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:44:08,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583750758] [2023-12-19 01:44:08,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:44:08,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:44:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:08,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:44:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:44:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:08,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:44:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:08,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:44:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:08,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:44:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:44:08,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:44:08,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583750758] [2023-12-19 01:44:08,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583750758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:44:08,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:44:08,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:44:08,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669083385] [2023-12-19 01:44:08,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:44:08,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:44:08,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:44:08,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:44:08,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:44:08,970 INFO L87 Difference]: Start difference. First operand 10880 states and 17821 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:44:13,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:44:13,137 INFO L93 Difference]: Finished difference Result 39394 states and 65458 transitions. [2023-12-19 01:44:13,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:44:13,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:44:13,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:44:13,233 INFO L225 Difference]: With dead ends: 39394 [2023-12-19 01:44:13,233 INFO L226 Difference]: Without dead ends: 28533 [2023-12-19 01:44:13,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:44:13,269 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1527 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3661 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:44:13,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 2051 Invalid, 3729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3661 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 01:44:13,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28533 states. [2023-12-19 01:44:14,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28533 to 21441. [2023-12-19 01:44:14,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21441 states, 19614 states have (on average 1.6220046905271746) internal successors, (31814), 19680 states have internal predecessors, (31814), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-19 01:44:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21441 states to 21441 states and 35349 transitions. [2023-12-19 01:44:14,402 INFO L78 Accepts]: Start accepts. Automaton has 21441 states and 35349 transitions. Word has length 162 [2023-12-19 01:44:14,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:44:14,403 INFO L495 AbstractCegarLoop]: Abstraction has 21441 states and 35349 transitions. [2023-12-19 01:44:14,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:44:14,403 INFO L276 IsEmpty]: Start isEmpty. Operand 21441 states and 35349 transitions. [2023-12-19 01:44:14,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:44:14,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:44:14,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:44:14,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:44:14,415 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:44:14,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:44:14,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1310219198, now seen corresponding path program 1 times [2023-12-19 01:44:14,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:44:14,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410229103] [2023-12-19 01:44:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:44:14,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:44:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:44:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:14,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:44:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:14,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:44:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:14,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:44:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:14,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:44:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:14,603 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 01:44:14,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:44:14,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410229103] [2023-12-19 01:44:14,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410229103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:44:14,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:44:14,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:44:14,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849942033] [2023-12-19 01:44:14,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:44:14,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:44:14,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:44:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:44:14,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:44:14,605 INFO L87 Difference]: Start difference. First operand 21441 states and 35349 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:44:19,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:44:19,791 INFO L93 Difference]: Finished difference Result 77793 states and 130104 transitions. [2023-12-19 01:44:19,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:44:19,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:44:19,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:44:20,023 INFO L225 Difference]: With dead ends: 77793 [2023-12-19 01:44:20,023 INFO L226 Difference]: Without dead ends: 56371 [2023-12-19 01:44:20,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:44:20,197 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1532 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3643 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:44:20,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 2051 Invalid, 3711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3643 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 01:44:20,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56371 states. [2023-12-19 01:44:22,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56371 to 42626. [2023-12-19 01:44:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42626 states, 39007 states have (on average 1.621247468403107) internal successors, (63240), 39137 states have internal predecessors, (63240), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2023-12-19 01:44:22,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42626 states to 42626 states and 70985 transitions. [2023-12-19 01:44:22,313 INFO L78 Accepts]: Start accepts. Automaton has 42626 states and 70985 transitions. Word has length 162 [2023-12-19 01:44:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:44:22,314 INFO L495 AbstractCegarLoop]: Abstraction has 42626 states and 70985 transitions. [2023-12-19 01:44:22,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:44:22,314 INFO L276 IsEmpty]: Start isEmpty. Operand 42626 states and 70985 transitions. [2023-12-19 01:44:22,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:44:22,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:44:22,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:44:22,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:44:22,345 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:44:22,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:44:22,345 INFO L85 PathProgramCache]: Analyzing trace with hash -946752700, now seen corresponding path program 1 times [2023-12-19 01:44:22,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:44:22,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094472262] [2023-12-19 01:44:22,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:44:22,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:44:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:44:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:22,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:44:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:22,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:44:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:22,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:44:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:22,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:44:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:22,562 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 01:44:22,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:44:22,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094472262] [2023-12-19 01:44:22,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094472262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:44:22,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:44:22,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:44:22,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710016813] [2023-12-19 01:44:22,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:44:22,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:44:22,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:44:22,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:44:22,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:44:22,563 INFO L87 Difference]: Start difference. First operand 42626 states and 70985 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:44:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:44:29,685 INFO L93 Difference]: Finished difference Result 154462 states and 260986 transitions. [2023-12-19 01:44:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:44:29,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:44:29,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:44:30,397 INFO L225 Difference]: With dead ends: 154462 [2023-12-19 01:44:30,397 INFO L226 Difference]: Without dead ends: 111855 [2023-12-19 01:44:30,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:44:30,526 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1618 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 2994 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 3110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:44:30,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1637 Valid, 1307 Invalid, 3110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2994 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 01:44:30,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111855 states. [2023-12-19 01:44:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111855 to 85252. [2023-12-19 01:44:34,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85252 states, 78049 states have (on average 1.6212891901241528) internal successors, (126540), 78307 states have internal predecessors, (126540), 5404 states have call successors, (5404), 1543 states have call predecessors, (5404), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2023-12-19 01:44:34,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85252 states to 85252 states and 144163 transitions. [2023-12-19 01:44:34,991 INFO L78 Accepts]: Start accepts. Automaton has 85252 states and 144163 transitions. Word has length 162 [2023-12-19 01:44:34,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:44:34,992 INFO L495 AbstractCegarLoop]: Abstraction has 85252 states and 144163 transitions. [2023-12-19 01:44:34,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:44:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 85252 states and 144163 transitions. [2023-12-19 01:44:35,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:44:35,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:44:35,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:44:35,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:44:35,066 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:44:35,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:44:35,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1491625274, now seen corresponding path program 1 times [2023-12-19 01:44:35,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:44:35,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288772667] [2023-12-19 01:44:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:44:35,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:44:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:35,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:44:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:35,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:44:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:44:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:44:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:35,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:44:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:35,262 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 01:44:35,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:44:35,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288772667] [2023-12-19 01:44:35,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288772667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:44:35,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:44:35,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:44:35,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674250627] [2023-12-19 01:44:35,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:44:35,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:44:35,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:44:35,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:44:35,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:44:35,264 INFO L87 Difference]: Start difference. First operand 85252 states and 144163 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:44:45,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:44:45,829 INFO L93 Difference]: Finished difference Result 308062 states and 528914 transitions. [2023-12-19 01:44:45,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:44:45,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:44:45,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:44:47,264 INFO L225 Difference]: With dead ends: 308062 [2023-12-19 01:44:47,264 INFO L226 Difference]: Without dead ends: 222829 [2023-12-19 01:44:47,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:44:47,643 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1526 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3603 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:44:47,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 2051 Invalid, 3671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3603 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 01:44:47,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222829 states. [2023-12-19 01:44:55,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222829 to 170757. [2023-12-19 01:44:55,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170757 states, 156386 states have (on average 1.62110419091223) internal successors, (253518), 156900 states have internal predecessors, (253518), 10780 states have call successors, (10780), 3079 states have call predecessors, (10780), 3590 states have return successors, (30973), 11289 states have call predecessors, (30973), 10778 states have call successors, (30973) [2023-12-19 01:44:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170757 states to 170757 states and 295271 transitions. [2023-12-19 01:44:56,996 INFO L78 Accepts]: Start accepts. Automaton has 170757 states and 295271 transitions. Word has length 162 [2023-12-19 01:44:56,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:44:56,998 INFO L495 AbstractCegarLoop]: Abstraction has 170757 states and 295271 transitions. [2023-12-19 01:44:56,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:44:56,998 INFO L276 IsEmpty]: Start isEmpty. Operand 170757 states and 295271 transitions. [2023-12-19 01:44:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:44:57,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:44:57,106 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:44:57,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:44:57,106 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:44:57,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:44:57,106 INFO L85 PathProgramCache]: Analyzing trace with hash -816465148, now seen corresponding path program 1 times [2023-12-19 01:44:57,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:44:57,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829391268] [2023-12-19 01:44:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:44:57,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:44:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:57,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:44:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:57,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:44:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:57,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:44:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:57,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:44:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:57,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:44:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:44:57,295 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 01:44:57,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:44:57,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829391268] [2023-12-19 01:44:57,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829391268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:44:57,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:44:57,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:44:57,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295203201] [2023-12-19 01:44:57,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:44:57,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:44:57,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:44:57,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:44:57,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:44:57,297 INFO L87 Difference]: Start difference. First operand 170757 states and 295271 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:45:14,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:14,722 INFO L93 Difference]: Finished difference Result 615261 states and 1081880 transitions. [2023-12-19 01:45:14,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:45:14,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:45:14,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:18,423 INFO L225 Difference]: With dead ends: 615261 [2023-12-19 01:45:18,424 INFO L226 Difference]: Without dead ends: 444523 [2023-12-19 01:45:19,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:45:19,542 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1525 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3590 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:19,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 2051 Invalid, 3658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3590 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 01:45:19,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444523 states. [2023-12-19 01:45:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444523 to 342278. [2023-12-19 01:45:39,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342278 states, 313571 states have (on average 1.620813149175147) internal successors, (508240), 314597 states have internal predecessors, (508240), 21532 states have call successors, (21532), 6151 states have call predecessors, (21532), 7174 states have return successors, (81603), 22553 states have call predecessors, (81603), 21530 states have call successors, (81603) [2023-12-19 01:45:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342278 states to 342278 states and 611375 transitions. [2023-12-19 01:45:43,132 INFO L78 Accepts]: Start accepts. Automaton has 342278 states and 611375 transitions. Word has length 162 [2023-12-19 01:45:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:43,132 INFO L495 AbstractCegarLoop]: Abstraction has 342278 states and 611375 transitions. [2023-12-19 01:45:43,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:45:43,133 INFO L276 IsEmpty]: Start isEmpty. Operand 342278 states and 611375 transitions. [2023-12-19 01:45:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:45:43,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:43,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:43,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 01:45:43,342 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:43,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:43,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1764517114, now seen corresponding path program 1 times [2023-12-19 01:45:43,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:43,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22564857] [2023-12-19 01:45:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:43,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:43,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:45:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:43,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:45:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:43,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:45:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:45:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:43,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:45:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:43,531 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 01:45:43,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:43,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22564857] [2023-12-19 01:45:43,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22564857] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:43,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:43,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:45:43,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085362924] [2023-12-19 01:45:43,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:43,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:45:43,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:43,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:45:43,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:45:43,533 INFO L87 Difference]: Start difference. First operand 342278 states and 611375 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 01:46:19,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:46:19,694 INFO L93 Difference]: Finished difference Result 1385308 states and 2492464 transitions. [2023-12-19 01:46:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:46:19,694 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-19 01:46:19,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:46:28,668 INFO L225 Difference]: With dead ends: 1385308 [2023-12-19 01:46:28,668 INFO L226 Difference]: Without dead ends: 1043049 [2023-12-19 01:46:31,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:46:31,301 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1634 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 4281 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 4351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 4281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:46:31,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 2044 Invalid, 4351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 4281 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-19 01:46:31,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043049 states.