/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 false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:53:07,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:53:07,420 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:53:07,425 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:53:07,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:53:07,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:53:07,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:53:07,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:53:07,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:53:07,448 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:53:07,449 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:53:07,449 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:53:07,450 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:53:07,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:53:07,451 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:53:07,451 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:53:07,451 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:53:07,451 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:53:07,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:53:07,451 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:53:07,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:53:07,453 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:53:07,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:53:07,453 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:53:07,453 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:53:07,453 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:53:07,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:53:07,453 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:53:07,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:53:07,454 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:53:07,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:53:07,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:53:07,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:53:07,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:53:07,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:53:07,455 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:53:07,455 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:53:07,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:53:07,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:53:07,456 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:53:07,456 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:53:07,456 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:53:07,456 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:53:07,456 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:53:07,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:53:07,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:53:07,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:53:07,687 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:53:07,687 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:53:07,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2023-12-20 14:53:08,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:53:08,963 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:53:08,964 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2023-12-20 14:53:08,990 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab1f8f15/85195e49892f43c3a7b7dfc55adbac56/FLAG7e7713648 [2023-12-20 14:53:09,013 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab1f8f15/85195e49892f43c3a7b7dfc55adbac56 [2023-12-20 14:53:09,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:53:09,016 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:53:09,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:53:09,018 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:53:09,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:53:09,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:53:09" (1/1) ... [2023-12-20 14:53:09,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ab5d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09, skipping insertion in model container [2023-12-20 14:53:09,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:53:09" (1/1) ... [2023-12-20 14:53:09,070 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:53:09,198 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.07.cil-2.c[911,924] [2023-12-20 14:53:09,270 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.07.cil-2.c[8416,8429] [2023-12-20 14:53:09,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:53:09,344 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:53:09,352 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.07.cil-2.c[911,924] [2023-12-20 14:53:09,366 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.07.cil-2.c[8416,8429] [2023-12-20 14:53:09,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:53:09,418 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:53:09,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09 WrapperNode [2023-12-20 14:53:09,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:53:09,420 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:53:09,420 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:53:09,420 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:53:09,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09" (1/1) ... [2023-12-20 14:53:09,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09" (1/1) ... [2023-12-20 14:53:09,485 INFO L138 Inliner]: procedures = 69, calls = 83, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 812 [2023-12-20 14:53:09,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:53:09,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:53:09,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:53:09,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:53:09,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09" (1/1) ... [2023-12-20 14:53:09,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09" (1/1) ... [2023-12-20 14:53:09,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09" (1/1) ... [2023-12-20 14:53:09,557 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]. [2023-12-20 14:53:09,558 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09" (1/1) ... [2023-12-20 14:53:09,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09" (1/1) ... [2023-12-20 14:53:09,569 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09" (1/1) ... [2023-12-20 14:53:09,582 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09" (1/1) ... [2023-12-20 14:53:09,584 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09" (1/1) ... [2023-12-20 14:53:09,586 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09" (1/1) ... [2023-12-20 14:53:09,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:53:09,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:53:09,605 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:53:09,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:53:09,606 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09" (1/1) ... [2023-12-20 14:53:09,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:53:09,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:53:09,641 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) [2023-12-20 14:53:09,656 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 [2023-12-20 14:53:09,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:53:09,671 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 14:53:09,671 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 14:53:09,672 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-20 14:53:09,672 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-20 14:53:09,672 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-20 14:53:09,672 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-20 14:53:09,672 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-20 14:53:09,673 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-20 14:53:09,673 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-20 14:53:09,673 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-20 14:53:09,673 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-20 14:53:09,673 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-20 14:53:09,673 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-20 14:53:09,673 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-20 14:53:09,673 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-20 14:53:09,673 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-20 14:53:09,674 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-20 14:53:09,674 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-20 14:53:09,674 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-20 14:53:09,674 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-20 14:53:09,674 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-20 14:53:09,674 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-20 14:53:09,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:53:09,675 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-20 14:53:09,675 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-20 14:53:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-20 14:53:09,676 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-20 14:53:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:53:09,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:53:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-20 14:53:09,676 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-20 14:53:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-20 14:53:09,676 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-20 14:53:09,790 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:53:09,793 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:53:10,400 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-12-20 14:53:10,400 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; [2023-12-20 14:53:10,489 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:53:10,541 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:53:10,542 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-12-20 14:53:10,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:53:10 BoogieIcfgContainer [2023-12-20 14:53:10,542 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:53:10,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:53:10,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:53:10,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:53:10,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:53:09" (1/3) ... [2023-12-20 14:53:10,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426a1e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:53:10, skipping insertion in model container [2023-12-20 14:53:10,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:09" (2/3) ... [2023-12-20 14:53:10,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426a1e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:53:10, skipping insertion in model container [2023-12-20 14:53:10,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:53:10" (3/3) ... [2023-12-20 14:53:10,548 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.07.cil-2.c [2023-12-20 14:53:10,582 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:53:10,583 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:53:10,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:53:10,625 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;@1197e22f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:53:10,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:53:10,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 345 states, 288 states have (on average 1.6979166666666667) internal successors, (489), 296 states have internal predecessors, (489), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-20 14:53:10,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 14:53:10,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:10,638 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] [2023-12-20 14:53:10,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:10,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:10,641 INFO L85 PathProgramCache]: Analyzing trace with hash -757185145, now seen corresponding path program 1 times [2023-12-20 14:53:10,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:10,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690569593] [2023-12-20 14:53:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:10,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:10,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:10,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:10,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:10,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:53:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:10,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:53:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:10,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:53:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:10,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:53:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:10,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:10,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690569593] [2023-12-20 14:53:10,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690569593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:10,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:10,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:53:10,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109320385] [2023-12-20 14:53:10,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:10,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:53:10,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:10,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:53:10,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:53:10,914 INFO L87 Difference]: Start difference. First operand has 345 states, 288 states have (on average 1.6979166666666667) internal successors, (489), 296 states have internal predecessors, (489), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) 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) [2023-12-20 14:53:11,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:11,663 INFO L93 Difference]: Finished difference Result 687 states and 1127 transitions. [2023-12-20 14:53:11,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:53:11,665 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 [2023-12-20 14:53:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:11,674 INFO L225 Difference]: With dead ends: 687 [2023-12-20 14:53:11,674 INFO L226 Difference]: Without dead ends: 356 [2023-12-20 14:53:11,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:53:11,682 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 554 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:11,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 1098 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:53:11,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-12-20 14:53:11,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 339. [2023-12-20 14:53:11,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 285 states have (on average 1.5894736842105264) internal successors, (453), 290 states have internal predecessors, (453), 39 states have call successors, (39), 15 states have call predecessors, (39), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-12-20 14:53:11,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 527 transitions. [2023-12-20 14:53:11,746 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 527 transitions. Word has length 57 [2023-12-20 14:53:11,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:11,747 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 527 transitions. [2023-12-20 14:53:11,747 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) [2023-12-20 14:53:11,747 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 527 transitions. [2023-12-20 14:53:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 14:53:11,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:11,749 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] [2023-12-20 14:53:11,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:53:11,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:11,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:11,750 INFO L85 PathProgramCache]: Analyzing trace with hash -741666427, now seen corresponding path program 1 times [2023-12-20 14:53:11,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:11,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031286933] [2023-12-20 14:53:11,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:11,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:11,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:11,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:11,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:53:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:11,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:53:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:11,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:53:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:11,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:53:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:11,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:11,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:11,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031286933] [2023-12-20 14:53:11,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031286933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:11,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:11,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:53:11,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190612853] [2023-12-20 14:53:11,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:11,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:53:11,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:11,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:53:11,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:53:11,965 INFO L87 Difference]: Start difference. First operand 339 states and 527 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) [2023-12-20 14:53:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:12,766 INFO L93 Difference]: Finished difference Result 571 states and 873 transitions. [2023-12-20 14:53:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:53:12,766 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 [2023-12-20 14:53:12,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:12,772 INFO L225 Difference]: With dead ends: 571 [2023-12-20 14:53:12,772 INFO L226 Difference]: Without dead ends: 477 [2023-12-20 14:53:12,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:53:12,775 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 1172 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:12,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1157 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:53:12,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-12-20 14:53:12,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 440. [2023-12-20 14:53:12,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 364 states have (on average 1.5604395604395604) internal successors, (568), 371 states have internal predecessors, (568), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2023-12-20 14:53:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 673 transitions. [2023-12-20 14:53:12,821 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 673 transitions. Word has length 57 [2023-12-20 14:53:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:12,821 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 673 transitions. [2023-12-20 14:53:12,821 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) [2023-12-20 14:53:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 673 transitions. [2023-12-20 14:53:12,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 14:53:12,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:12,823 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] [2023-12-20 14:53:12,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:53:12,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:12,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:12,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1609308101, now seen corresponding path program 1 times [2023-12-20 14:53:12,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:12,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334237957] [2023-12-20 14:53:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:12,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:53:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:53:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:53:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:13,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:53:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:13,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:13,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334237957] [2023-12-20 14:53:13,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334237957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:13,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:13,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:53:13,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393871686] [2023-12-20 14:53:13,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:13,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:53:13,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:13,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:53:13,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:53:13,025 INFO L87 Difference]: Start difference. First operand 440 states and 673 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) [2023-12-20 14:53:13,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:13,859 INFO L93 Difference]: Finished difference Result 801 states and 1202 transitions. [2023-12-20 14:53:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 14:53:13,860 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 [2023-12-20 14:53:13,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:13,863 INFO L225 Difference]: With dead ends: 801 [2023-12-20 14:53:13,863 INFO L226 Difference]: Without dead ends: 613 [2023-12-20 14:53:13,864 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 [2023-12-20 14:53:13,865 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 1297 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:13,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1266 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:53:13,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-20 14:53:13,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 541. [2023-12-20 14:53:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 443 states have (on average 1.5395033860045146) internal successors, (682), 452 states have internal predecessors, (682), 65 states have call successors, (65), 29 states have call predecessors, (65), 31 states have return successors, (74), 63 states have call predecessors, (74), 61 states have call successors, (74) [2023-12-20 14:53:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 821 transitions. [2023-12-20 14:53:13,895 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 821 transitions. Word has length 57 [2023-12-20 14:53:13,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:13,895 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 821 transitions. [2023-12-20 14:53:13,895 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) [2023-12-20 14:53:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 821 transitions. [2023-12-20 14:53:13,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 14:53:13,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:13,898 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] [2023-12-20 14:53:13,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:53:13,898 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:13,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:13,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1792172857, now seen corresponding path program 1 times [2023-12-20 14:53:13,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:13,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37918747] [2023-12-20 14:53:13,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:13,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:13,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:13,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:13,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:14,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:53:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:14,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:53:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:14,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:53:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:53:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:14,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:14,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37918747] [2023-12-20 14:53:14,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37918747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:14,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:14,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:53:14,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343847152] [2023-12-20 14:53:14,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:14,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:53:14,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:14,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:53:14,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:14,029 INFO L87 Difference]: Start difference. First operand 541 states and 821 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-20 14:53:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:14,737 INFO L93 Difference]: Finished difference Result 1147 states and 1697 transitions. [2023-12-20 14:53:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 14:53:14,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 57 [2023-12-20 14:53:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:14,741 INFO L225 Difference]: With dead ends: 1147 [2023-12-20 14:53:14,742 INFO L226 Difference]: Without dead ends: 864 [2023-12-20 14:53:14,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:53:14,743 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 1386 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:14,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 1053 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:53:14,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2023-12-20 14:53:14,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 793. [2023-12-20 14:53:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 640 states have (on average 1.5) internal successors, (960), 653 states have internal predecessors, (960), 95 states have call successors, (95), 50 states have call predecessors, (95), 56 states have return successors, (112), 93 states have call predecessors, (112), 91 states have call successors, (112) [2023-12-20 14:53:14,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1167 transitions. [2023-12-20 14:53:14,798 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1167 transitions. Word has length 57 [2023-12-20 14:53:14,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:14,799 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1167 transitions. [2023-12-20 14:53:14,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-20 14:53:14,799 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1167 transitions. [2023-12-20 14:53:14,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:53:14,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:14,802 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] [2023-12-20 14:53:14,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:53:14,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:14,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:14,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1940219858, now seen corresponding path program 1 times [2023-12-20 14:53:14,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:14,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677155986] [2023-12-20 14:53:14,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:14,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:14,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:14,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:14,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:14,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:53:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:14,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:14,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 14:53:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:14,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:53:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:14,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:14,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:14,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677155986] [2023-12-20 14:53:14,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677155986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:14,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:14,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:53:14,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151741515] [2023-12-20 14:53:14,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:14,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:53:14,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:14,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:53:14,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:53:14,929 INFO L87 Difference]: Start difference. First operand 793 states and 1167 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) [2023-12-20 14:53:15,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:15,868 INFO L93 Difference]: Finished difference Result 1440 states and 2103 transitions. [2023-12-20 14:53:15,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 14:53:15,869 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 [2023-12-20 14:53:15,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:15,873 INFO L225 Difference]: With dead ends: 1440 [2023-12-20 14:53:15,874 INFO L226 Difference]: Without dead ends: 905 [2023-12-20 14:53:15,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:53:15,877 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 446 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 1641 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:15,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1901 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:53:15,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-12-20 14:53:15,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 817. [2023-12-20 14:53:15,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 658 states have (on average 1.486322188449848) internal successors, (978), 671 states have internal predecessors, (978), 95 states have call successors, (95), 50 states have call predecessors, (95), 62 states have return successors, (118), 99 states have call predecessors, (118), 91 states have call successors, (118) [2023-12-20 14:53:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1191 transitions. [2023-12-20 14:53:15,919 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1191 transitions. Word has length 58 [2023-12-20 14:53:15,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:15,919 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1191 transitions. [2023-12-20 14:53:15,919 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) [2023-12-20 14:53:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1191 transitions. [2023-12-20 14:53:15,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:53:15,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:15,920 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] [2023-12-20 14:53:15,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:53:15,920 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:15,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:15,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2080768468, now seen corresponding path program 1 times [2023-12-20 14:53:15,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:15,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753705153] [2023-12-20 14:53:15,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:15,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:15,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:15,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:15,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:53:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 14:53:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:53:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:16,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:16,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753705153] [2023-12-20 14:53:16,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753705153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:16,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:16,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:53:16,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111829606] [2023-12-20 14:53:16,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:16,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:53:16,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:16,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:53:16,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:53:16,048 INFO L87 Difference]: Start difference. First operand 817 states and 1191 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) [2023-12-20 14:53:16,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:16,765 INFO L93 Difference]: Finished difference Result 1455 states and 2094 transitions. [2023-12-20 14:53:16,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:53:16,766 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 [2023-12-20 14:53:16,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:16,769 INFO L225 Difference]: With dead ends: 1455 [2023-12-20 14:53:16,769 INFO L226 Difference]: Without dead ends: 896 [2023-12-20 14:53:16,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:53:16,771 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 661 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:16,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1690 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1558 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:53:16,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2023-12-20 14:53:16,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 829. [2023-12-20 14:53:16,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 667 states have (on average 1.4752623688155921) internal successors, (984), 680 states have internal predecessors, (984), 95 states have call successors, (95), 50 states have call predecessors, (95), 65 states have return successors, (121), 102 states have call predecessors, (121), 91 states have call successors, (121) [2023-12-20 14:53:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1200 transitions. [2023-12-20 14:53:16,807 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1200 transitions. Word has length 58 [2023-12-20 14:53:16,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:16,807 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1200 transitions. [2023-12-20 14:53:16,807 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) [2023-12-20 14:53:16,807 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1200 transitions. [2023-12-20 14:53:16,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:53:16,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:16,808 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] [2023-12-20 14:53:16,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:53:16,812 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:16,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:16,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2141812270, now seen corresponding path program 1 times [2023-12-20 14:53:16,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:16,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685498383] [2023-12-20 14:53:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:16,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:53:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 14:53:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:53:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:16,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:16,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685498383] [2023-12-20 14:53:16,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685498383] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:16,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:16,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:53:16,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952881100] [2023-12-20 14:53:16,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:16,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:53:16,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:16,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:53:16,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:53:16,938 INFO L87 Difference]: Start difference. First operand 829 states and 1200 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-20 14:53:18,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:18,384 INFO L93 Difference]: Finished difference Result 2934 states and 4262 transitions. [2023-12-20 14:53:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 14:53:18,384 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-12-20 14:53:18,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:18,389 INFO L225 Difference]: With dead ends: 2934 [2023-12-20 14:53:18,389 INFO L226 Difference]: Without dead ends: 1182 [2023-12-20 14:53:18,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 14:53:18,393 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1854 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 1974 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:18,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 1974 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 2225 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:53:18,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2023-12-20 14:53:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1044. [2023-12-20 14:53:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 823 states have (on average 1.4240583232077764) internal successors, (1172), 840 states have internal predecessors, (1172), 125 states have call successors, (125), 71 states have call predecessors, (125), 94 states have return successors, (173), 136 states have call predecessors, (173), 121 states have call successors, (173) [2023-12-20 14:53:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1470 transitions. [2023-12-20 14:53:18,438 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1470 transitions. Word has length 58 [2023-12-20 14:53:18,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:18,439 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 1470 transitions. [2023-12-20 14:53:18,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-20 14:53:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1470 transitions. [2023-12-20 14:53:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 14:53:18,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:18,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:53:18,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:53:18,441 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:18,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:18,441 INFO L85 PathProgramCache]: Analyzing trace with hash -292571228, now seen corresponding path program 1 times [2023-12-20 14:53:18,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:18,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128288285] [2023-12-20 14:53:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:18,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:18,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:18,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:18,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:18,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:53:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:18,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:53:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:18,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:53:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:18,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:18,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128288285] [2023-12-20 14:53:18,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128288285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:18,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:18,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:53:18,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687396822] [2023-12-20 14:53:18,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:18,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:53:18,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:18,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:53:18,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:53:18,526 INFO L87 Difference]: Start difference. First operand 1044 states and 1470 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-20 14:53:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:19,225 INFO L93 Difference]: Finished difference Result 2136 states and 3019 transitions. [2023-12-20 14:53:19,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 14:53:19,225 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 59 [2023-12-20 14:53:19,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:19,251 INFO L225 Difference]: With dead ends: 2136 [2023-12-20 14:53:19,251 INFO L226 Difference]: Without dead ends: 239 [2023-12-20 14:53:19,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-20 14:53:19,254 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1094 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:19,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 1364 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:53:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-20 14:53:19,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-12-20 14:53:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 209 states have (on average 1.6172248803827751) internal successors, (338), 211 states have internal predecessors, (338), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-20 14:53:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 382 transitions. [2023-12-20 14:53:19,261 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 382 transitions. Word has length 59 [2023-12-20 14:53:19,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:19,262 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 382 transitions. [2023-12-20 14:53:19,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-20 14:53:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 382 transitions. [2023-12-20 14:53:19,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:53:19,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:19,262 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] [2023-12-20 14:53:19,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:53:19,263 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:19,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:19,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1618565886, now seen corresponding path program 1 times [2023-12-20 14:53:19,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:19,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043474920] [2023-12-20 14:53:19,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:19,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:53:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:53:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:53:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:19,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:19,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:19,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043474920] [2023-12-20 14:53:19,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043474920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:19,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:19,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:53:19,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759106778] [2023-12-20 14:53:19,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:19,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:53:19,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:19,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:53:19,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:19,371 INFO L87 Difference]: Start difference. First operand 239 states and 382 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:20,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:20,550 INFO L93 Difference]: Finished difference Result 589 states and 968 transitions. [2023-12-20 14:53:20,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:53:20,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2023-12-20 14:53:20,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:20,552 INFO L225 Difference]: With dead ends: 589 [2023-12-20 14:53:20,552 INFO L226 Difference]: Without dead ends: 355 [2023-12-20 14:53:20,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-20 14:53:20,554 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 781 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:20,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 802 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:53:20,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-12-20 14:53:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 241. [2023-12-20 14:53:20,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 211 states have (on average 1.6066350710900474) internal successors, (339), 213 states have internal predecessors, (339), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-20 14:53:20,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 383 transitions. [2023-12-20 14:53:20,564 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 383 transitions. Word has length 112 [2023-12-20 14:53:20,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:20,564 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 383 transitions. [2023-12-20 14:53:20,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 383 transitions. [2023-12-20 14:53:20,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:53:20,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:20,565 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] [2023-12-20 14:53:20,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:53:20,565 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:20,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:20,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1412680890, now seen corresponding path program 1 times [2023-12-20 14:53:20,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:20,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855193064] [2023-12-20 14:53:20,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:20,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:20,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:20,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:20,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:53:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:20,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:53:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:53:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:20,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:20,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855193064] [2023-12-20 14:53:20,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855193064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:20,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:20,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:53:20,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351721745] [2023-12-20 14:53:20,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:20,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:53:20,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:20,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:53:20,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:53:20,710 INFO L87 Difference]: Start difference. First operand 241 states and 383 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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) [2023-12-20 14:53:22,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:22,047 INFO L93 Difference]: Finished difference Result 868 states and 1411 transitions. [2023-12-20 14:53:22,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:53:22,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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 112 [2023-12-20 14:53:22,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:22,050 INFO L225 Difference]: With dead ends: 868 [2023-12-20 14:53:22,050 INFO L226 Difference]: Without dead ends: 641 [2023-12-20 14:53:22,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:53:22,051 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 948 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:22,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 750 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:53:22,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-12-20 14:53:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 476. [2023-12-20 14:53:22,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 423 states have (on average 1.6170212765957446) internal successors, (684), 426 states have internal predecessors, (684), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2023-12-20 14:53:22,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 763 transitions. [2023-12-20 14:53:22,074 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 763 transitions. Word has length 112 [2023-12-20 14:53:22,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:22,074 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 763 transitions. [2023-12-20 14:53:22,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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) [2023-12-20 14:53:22,074 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 763 transitions. [2023-12-20 14:53:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:53:22,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:22,075 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] [2023-12-20 14:53:22,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:53:22,075 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:22,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:22,076 INFO L85 PathProgramCache]: Analyzing trace with hash -418428094, now seen corresponding path program 1 times [2023-12-20 14:53:22,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:22,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890859760] [2023-12-20 14:53:22,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:22,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:22,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:22,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:22,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:53:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:22,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:53:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:22,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:53:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:22,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:22,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:22,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890859760] [2023-12-20 14:53:22,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890859760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:22,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:22,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:53:22,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349421996] [2023-12-20 14:53:22,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:22,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:53:22,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:22,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:53:22,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:22,228 INFO L87 Difference]: Start difference. First operand 476 states and 763 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:24,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:24,115 INFO L93 Difference]: Finished difference Result 1429 states and 2323 transitions. [2023-12-20 14:53:24,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:53:24,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2023-12-20 14:53:24,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:24,120 INFO L225 Difference]: With dead ends: 1429 [2023-12-20 14:53:24,120 INFO L226 Difference]: Without dead ends: 967 [2023-12-20 14:53:24,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:53:24,122 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 961 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:24,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 1426 Invalid, 2443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 14:53:24,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-12-20 14:53:24,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 694. [2023-12-20 14:53:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 618 states have (on average 1.610032362459547) internal successors, (995), 622 states have internal predecessors, (995), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-20 14:53:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1108 transitions. [2023-12-20 14:53:24,150 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1108 transitions. Word has length 112 [2023-12-20 14:53:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:24,150 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1108 transitions. [2023-12-20 14:53:24,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:24,151 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1108 transitions. [2023-12-20 14:53:24,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:53:24,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:24,151 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] [2023-12-20 14:53:24,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:53:24,152 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:24,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:24,152 INFO L85 PathProgramCache]: Analyzing trace with hash 932957124, now seen corresponding path program 1 times [2023-12-20 14:53:24,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:24,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962814312] [2023-12-20 14:53:24,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:24,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:53:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:53:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:53:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:24,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:24,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962814312] [2023-12-20 14:53:24,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962814312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:24,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:24,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:53:24,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260700313] [2023-12-20 14:53:24,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:24,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:53:24,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:24,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:53:24,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:24,284 INFO L87 Difference]: Start difference. First operand 694 states and 1108 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:26,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:26,225 INFO L93 Difference]: Finished difference Result 2252 states and 3654 transitions. [2023-12-20 14:53:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:53:26,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2023-12-20 14:53:26,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:26,233 INFO L225 Difference]: With dead ends: 2252 [2023-12-20 14:53:26,233 INFO L226 Difference]: Without dead ends: 1572 [2023-12-20 14:53:26,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:53:26,236 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 959 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:26,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1424 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 14:53:26,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2023-12-20 14:53:26,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1131. [2023-12-20 14:53:26,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1009 states have (on average 1.6035678889990088) internal successors, (1618), 1015 states have internal predecessors, (1618), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2023-12-20 14:53:26,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1803 transitions. [2023-12-20 14:53:26,291 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1803 transitions. Word has length 112 [2023-12-20 14:53:26,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:26,291 INFO L495 AbstractCegarLoop]: Abstraction has 1131 states and 1803 transitions. [2023-12-20 14:53:26,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:26,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1803 transitions. [2023-12-20 14:53:26,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:53:26,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:26,293 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] [2023-12-20 14:53:26,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:53:26,293 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:26,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:26,294 INFO L85 PathProgramCache]: Analyzing trace with hash -686017790, now seen corresponding path program 1 times [2023-12-20 14:53:26,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:26,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591547742] [2023-12-20 14:53:26,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:26,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:26,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:26,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:26,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:53:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:26,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:53:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:26,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:53:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:26,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:26,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591547742] [2023-12-20 14:53:26,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591547742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:26,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:26,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:53:26,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376533151] [2023-12-20 14:53:26,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:26,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:53:26,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:26,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:53:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:26,486 INFO L87 Difference]: Start difference. First operand 1131 states and 1803 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:28,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:28,307 INFO L93 Difference]: Finished difference Result 3833 states and 6201 transitions. [2023-12-20 14:53:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:53:28,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2023-12-20 14:53:28,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:28,317 INFO L225 Difference]: With dead ends: 3833 [2023-12-20 14:53:28,317 INFO L226 Difference]: Without dead ends: 2716 [2023-12-20 14:53:28,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:53:28,320 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 961 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:28,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 1424 Invalid, 2427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 14:53:28,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2023-12-20 14:53:28,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 2006. [2023-12-20 14:53:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 1792 states have (on average 1.5982142857142858) internal successors, (2864), 1802 states have internal predecessors, (2864), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2023-12-20 14:53:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 3199 transitions. [2023-12-20 14:53:28,428 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 3199 transitions. Word has length 112 [2023-12-20 14:53:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:28,428 INFO L495 AbstractCegarLoop]: Abstraction has 2006 states and 3199 transitions. [2023-12-20 14:53:28,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 3199 transitions. [2023-12-20 14:53:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:53:28,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:28,430 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] [2023-12-20 14:53:28,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:53:28,430 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:28,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:28,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1569526780, now seen corresponding path program 1 times [2023-12-20 14:53:28,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:28,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484690390] [2023-12-20 14:53:28,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:28,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:28,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:28,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:53:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:28,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:53:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:28,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:53:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:28,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:28,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:28,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484690390] [2023-12-20 14:53:28,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484690390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:28,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:28,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:53:28,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72753883] [2023-12-20 14:53:28,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:28,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:53:28,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:28,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:53:28,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:28,566 INFO L87 Difference]: Start difference. First operand 2006 states and 3199 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:30,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:30,439 INFO L93 Difference]: Finished difference Result 6987 states and 11299 transitions. [2023-12-20 14:53:30,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:53:30,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2023-12-20 14:53:30,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:30,458 INFO L225 Difference]: With dead ends: 6987 [2023-12-20 14:53:30,459 INFO L226 Difference]: Without dead ends: 4995 [2023-12-20 14:53:30,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:53:30,465 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 957 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:30,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 1424 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 14:53:30,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2023-12-20 14:53:30,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 3770. [2023-12-20 14:53:30,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3770 states, 3372 states have (on average 1.5954922894424675) internal successors, (5380), 3390 states have internal predecessors, (5380), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2023-12-20 14:53:30,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 6033 transitions. [2023-12-20 14:53:30,629 INFO L78 Accepts]: Start accepts. Automaton has 3770 states and 6033 transitions. Word has length 112 [2023-12-20 14:53:30,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:30,629 INFO L495 AbstractCegarLoop]: Abstraction has 3770 states and 6033 transitions. [2023-12-20 14:53:30,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:30,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3770 states and 6033 transitions. [2023-12-20 14:53:30,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:53:30,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:30,632 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] [2023-12-20 14:53:30,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:53:30,632 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:30,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:30,633 INFO L85 PathProgramCache]: Analyzing trace with hash 784858502, now seen corresponding path program 1 times [2023-12-20 14:53:30,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:30,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635590406] [2023-12-20 14:53:30,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:30,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:30,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:30,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:30,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:53:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:30,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:53:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:30,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:53:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:30,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:30,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635590406] [2023-12-20 14:53:30,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635590406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:30,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:30,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:53:30,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342370658] [2023-12-20 14:53:30,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:30,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:53:30,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:30,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:53:30,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:30,787 INFO L87 Difference]: Start difference. First operand 3770 states and 6033 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:32,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:32,867 INFO L93 Difference]: Finished difference Result 13313 states and 21587 transitions. [2023-12-20 14:53:32,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:53:32,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2023-12-20 14:53:32,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:32,906 INFO L225 Difference]: With dead ends: 13313 [2023-12-20 14:53:32,906 INFO L226 Difference]: Without dead ends: 9557 [2023-12-20 14:53:32,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:53:32,916 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 956 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:32,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 1424 Invalid, 2386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2329 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 14:53:32,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9557 states. [2023-12-20 14:53:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9557 to 7311. [2023-12-20 14:53:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7311 states, 6545 states have (on average 1.5935828877005347) internal successors, (10430), 6579 states have internal predecessors, (10430), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2023-12-20 14:53:33,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7311 states to 7311 states and 11773 transitions. [2023-12-20 14:53:33,215 INFO L78 Accepts]: Start accepts. Automaton has 7311 states and 11773 transitions. Word has length 112 [2023-12-20 14:53:33,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:33,215 INFO L495 AbstractCegarLoop]: Abstraction has 7311 states and 11773 transitions. [2023-12-20 14:53:33,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:33,216 INFO L276 IsEmpty]: Start isEmpty. Operand 7311 states and 11773 transitions. [2023-12-20 14:53:33,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:53:33,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:33,220 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] [2023-12-20 14:53:33,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:53:33,220 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:33,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:33,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1633045564, now seen corresponding path program 1 times [2023-12-20 14:53:33,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:33,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718139674] [2023-12-20 14:53:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:33,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:33,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:33,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:53:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:33,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:53:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:33,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:53:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:33,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:33,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718139674] [2023-12-20 14:53:33,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718139674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:33,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:33,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:53:33,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678240722] [2023-12-20 14:53:33,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:33,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:53:33,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:33,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:53:33,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:33,425 INFO L87 Difference]: Start difference. First operand 7311 states and 11773 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:35,437 INFO L93 Difference]: Finished difference Result 25964 states and 42353 transitions. [2023-12-20 14:53:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:53:35,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2023-12-20 14:53:35,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:35,528 INFO L225 Difference]: With dead ends: 25964 [2023-12-20 14:53:35,528 INFO L226 Difference]: Without dead ends: 18667 [2023-12-20 14:53:35,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:53:35,575 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 1023 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:35,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 928 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 14:53:35,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18667 states. [2023-12-20 14:53:36,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18667 to 14424. [2023-12-20 14:53:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14424 states, 12922 states have (on average 1.5923231697879585) internal successors, (20576), 12988 states have internal predecessors, (20576), 1047 states have call successors, (1047), 391 states have call predecessors, (1047), 454 states have return successors, (1838), 1108 states have call predecessors, (1838), 1045 states have call successors, (1838) [2023-12-20 14:53:36,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14424 states to 14424 states and 23461 transitions. [2023-12-20 14:53:36,267 INFO L78 Accepts]: Start accepts. Automaton has 14424 states and 23461 transitions. Word has length 112 [2023-12-20 14:53:36,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:36,267 INFO L495 AbstractCegarLoop]: Abstraction has 14424 states and 23461 transitions. [2023-12-20 14:53:36,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:36,267 INFO L276 IsEmpty]: Start isEmpty. Operand 14424 states and 23461 transitions. [2023-12-20 14:53:36,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:53:36,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:36,276 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] [2023-12-20 14:53:36,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:53:36,276 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:36,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1891188166, now seen corresponding path program 1 times [2023-12-20 14:53:36,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:36,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568623149] [2023-12-20 14:53:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:36,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:36,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:36,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:53:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:36,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:53:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:36,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:53:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:36,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:36,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568623149] [2023-12-20 14:53:36,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568623149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:36,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:36,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:53:36,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411217075] [2023-12-20 14:53:36,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:36,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:53:36,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:36,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:53:36,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:36,398 INFO L87 Difference]: Start difference. First operand 14424 states and 23461 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:39,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:39,294 INFO L93 Difference]: Finished difference Result 57411 states and 94153 transitions. [2023-12-20 14:53:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:53:39,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2023-12-20 14:53:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:39,493 INFO L225 Difference]: With dead ends: 57411 [2023-12-20 14:53:39,493 INFO L226 Difference]: Without dead ends: 43001 [2023-12-20 14:53:39,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:53:39,523 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1019 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 2727 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:39,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 1417 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2727 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 14:53:39,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43001 states. [2023-12-20 14:53:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43001 to 28585. [2023-12-20 14:53:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28585 states, 25675 states have (on average 1.5929113924050633) internal successors, (40898), 25805 states have internal predecessors, (40898), 2007 states have call successors, (2007), 775 states have call predecessors, (2007), 902 states have return successors, (4320), 2132 states have call predecessors, (4320), 2005 states have call successors, (4320) [2023-12-20 14:53:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28585 states to 28585 states and 47225 transitions. [2023-12-20 14:53:40,815 INFO L78 Accepts]: Start accepts. Automaton has 28585 states and 47225 transitions. Word has length 112 [2023-12-20 14:53:40,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:40,816 INFO L495 AbstractCegarLoop]: Abstraction has 28585 states and 47225 transitions. [2023-12-20 14:53:40,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand 28585 states and 47225 transitions. [2023-12-20 14:53:40,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:53:40,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:40,840 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] [2023-12-20 14:53:40,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:53:40,841 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:40,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:40,841 INFO L85 PathProgramCache]: Analyzing trace with hash 896494468, now seen corresponding path program 1 times [2023-12-20 14:53:40,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:40,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365432806] [2023-12-20 14:53:40,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:40,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:40,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:40,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:40,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:53:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:40,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:53:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:40,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:53:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:40,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:40,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:40,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365432806] [2023-12-20 14:53:40,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365432806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:40,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:40,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:53:40,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696151768] [2023-12-20 14:53:40,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:40,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:53:40,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:40,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:53:40,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:40,966 INFO L87 Difference]: Start difference. First operand 28585 states and 47225 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:44,900 INFO L93 Difference]: Finished difference Result 112370 states and 187055 transitions. [2023-12-20 14:53:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:53:44,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2023-12-20 14:53:44,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:45,192 INFO L225 Difference]: With dead ends: 112370 [2023-12-20 14:53:45,193 INFO L226 Difference]: Without dead ends: 83799 [2023-12-20 14:53:45,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:53:45,271 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 1176 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:45,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 1413 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 14:53:45,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83799 states. [2023-12-20 14:53:48,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83799 to 55626. [2023-12-20 14:53:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55626 states, 49964 states have (on average 1.588423665038828) internal successors, (79364), 50222 states have internal predecessors, (79364), 3863 states have call successors, (3863), 1543 states have call predecessors, (3863), 1798 states have return successors, (10678), 4116 states have call predecessors, (10678), 3861 states have call successors, (10678) [2023-12-20 14:53:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55626 states to 55626 states and 93905 transitions. [2023-12-20 14:53:48,342 INFO L78 Accepts]: Start accepts. Automaton has 55626 states and 93905 transitions. Word has length 112 [2023-12-20 14:53:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:48,343 INFO L495 AbstractCegarLoop]: Abstraction has 55626 states and 93905 transitions. [2023-12-20 14:53:48,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:48,343 INFO L276 IsEmpty]: Start isEmpty. Operand 55626 states and 93905 transitions. [2023-12-20 14:53:48,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:53:48,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:48,378 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] [2023-12-20 14:53:48,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:53:48,378 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:48,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:48,379 INFO L85 PathProgramCache]: Analyzing trace with hash 310218246, now seen corresponding path program 1 times [2023-12-20 14:53:48,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:48,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103518875] [2023-12-20 14:53:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:48,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:48,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:48,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:53:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:48,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:53:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:48,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:53:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:48,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:48,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103518875] [2023-12-20 14:53:48,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103518875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:48,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:48,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:53:48,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530881390] [2023-12-20 14:53:48,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:48,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:53:48,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:48,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:53:48,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:53:48,496 INFO L87 Difference]: Start difference. First operand 55626 states and 93905 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:53:54,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:54,343 INFO L93 Difference]: Finished difference Result 214609 states and 365893 transitions. [2023-12-20 14:53:54,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:53:54,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2023-12-20 14:53:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:55,034 INFO L225 Difference]: With dead ends: 214609 [2023-12-20 14:53:55,035 INFO L226 Difference]: Without dead ends: 158997 [2023-12-20 14:53:55,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:53:55,272 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 999 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:55,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 1417 Invalid, 2671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2612 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 14:53:55,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158997 states. [2023-12-20 14:54:00,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158997 to 110987. [2023-12-20 14:54:00,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110987 states, 99949 states have (on average 1.5893505687900829) internal successors, (158854), 100463 states have internal predecessors, (158854), 7447 states have call successors, (7447), 3079 states have call predecessors, (7447), 3590 states have return successors, (27640), 7956 states have call predecessors, (27640), 7445 states have call successors, (27640) [2023-12-20 14:54:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110987 states to 110987 states and 193941 transitions. [2023-12-20 14:54:00,916 INFO L78 Accepts]: Start accepts. Automaton has 110987 states and 193941 transitions. Word has length 112 [2023-12-20 14:54:00,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:00,917 INFO L495 AbstractCegarLoop]: Abstraction has 110987 states and 193941 transitions. [2023-12-20 14:54:00,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:54:00,917 INFO L276 IsEmpty]: Start isEmpty. Operand 110987 states and 193941 transitions. [2023-12-20 14:54:01,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:54:01,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:01,144 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] [2023-12-20 14:54:01,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:54:01,144 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:01,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:01,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1648356540, now seen corresponding path program 1 times [2023-12-20 14:54:01,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:01,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937983318] [2023-12-20 14:54:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:01,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:01,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:01,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:01,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:54:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:01,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:54:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:01,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:54:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:54:01,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:01,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937983318] [2023-12-20 14:54:01,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937983318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:01,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:01,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:01,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376009102] [2023-12-20 14:54:01,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:01,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:01,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:01,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:01,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:01,261 INFO L87 Difference]: Start difference. First operand 110987 states and 193941 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:54:11,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:11,467 INFO L93 Difference]: Finished difference Result 422928 states and 746699 transitions. [2023-12-20 14:54:11,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:54:11,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 112 [2023-12-20 14:54:11,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:12,942 INFO L225 Difference]: With dead ends: 422928 [2023-12-20 14:54:12,942 INFO L226 Difference]: Without dead ends: 311955 [2023-12-20 14:54:13,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:54:13,334 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1111 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 2249 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 2309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:13,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 1417 Invalid, 2309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2249 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 14:54:13,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311955 states. [2023-12-20 14:54:23,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311955 to 221708. [2023-12-20 14:54:23,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221708 states, 200174 states have (on average 1.5903364073256268) internal successors, (318344), 201200 states have internal predecessors, (318344), 14359 states have call successors, (14359), 6151 states have call predecessors, (14359), 7174 states have return successors, (74430), 15380 states have call predecessors, (74430), 14357 states have call successors, (74430) [2023-12-20 14:54:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221708 states to 221708 states and 407133 transitions. [2023-12-20 14:54:25,567 INFO L78 Accepts]: Start accepts. Automaton has 221708 states and 407133 transitions. Word has length 112 [2023-12-20 14:54:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:25,567 INFO L495 AbstractCegarLoop]: Abstraction has 221708 states and 407133 transitions. [2023-12-20 14:54:25,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-12-20 14:54:25,576 INFO L276 IsEmpty]: Start isEmpty. Operand 221708 states and 407133 transitions. [2023-12-20 14:54:25,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:54:25,706 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:25,707 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] [2023-12-20 14:54:25,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:54:25,708 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:25,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash 228126278, now seen corresponding path program 1 times [2023-12-20 14:54:25,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:25,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666389265] [2023-12-20 14:54:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:25,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:25,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:25,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:25,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:54:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:25,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:54:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:25,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:54:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:54:25,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:25,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666389265] [2023-12-20 14:54:25,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666389265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:25,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:25,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:25,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374095473] [2023-12-20 14:54:25,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:25,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:25,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:25,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:25,827 INFO L87 Difference]: Start difference. First operand 221708 states and 407133 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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)