/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.13.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:54:18,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:54:18,931 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 14:54:18,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:54:18,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:54:18,959 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:54:18,960 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:54:18,960 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:54:18,960 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:54:18,962 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:54:18,962 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:54:18,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:54:18,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:54:18,963 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:54:18,963 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:54:18,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:54:18,963 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:54:18,964 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:54:18,964 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:54:18,964 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:54:18,964 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:54:18,964 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:54:18,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:54:18,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:54:18,965 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:54:18,965 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:54:18,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:54:18,966 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:54:18,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:54:18,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:54:18,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:54:18,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:54:18,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:54:18,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:54:18,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:54:18,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:54:18,967 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:54:18,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:54:18,968 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:54:18,968 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:54:18,968 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:54:18,968 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:54:18,969 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:54:18,969 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:54:19,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:54:19,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:54:19,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:54:19,169 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:54:19,169 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:54:19,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c [2023-12-20 14:54:20,141 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:54:20,337 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:54:20,338 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c [2023-12-20 14:54:20,359 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f58fa73b/660d03b73fdc4d5e96bba9ed13ff4d7f/FLAG341b16ad2 [2023-12-20 14:54:20,371 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f58fa73b/660d03b73fdc4d5e96bba9ed13ff4d7f [2023-12-20 14:54:20,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:54:20,374 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:54:20,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:54:20,375 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:54:20,378 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:54:20,378 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:54:20" (1/1) ... [2023-12-20 14:54:20,379 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@735b1a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20, skipping insertion in model container [2023-12-20 14:54:20,379 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:54:20" (1/1) ... [2023-12-20 14:54:20,428 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:54:20,524 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.13.cil-1.c[911,924] [2023-12-20 14:54:20,567 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.13.cil-1.c[8416,8429] [2023-12-20 14:54:20,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:54:20,653 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:54:20,660 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.13.cil-1.c[911,924] [2023-12-20 14:54:20,676 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.13.cil-1.c[8416,8429] [2023-12-20 14:54:20,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:54:20,727 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:54:20,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20 WrapperNode [2023-12-20 14:54:20,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:54:20,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:54:20,729 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:54:20,729 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:54:20,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20" (1/1) ... [2023-12-20 14:54:20,745 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20" (1/1) ... [2023-12-20 14:54:20,790 INFO L138 Inliner]: procedures = 81, calls = 101, calls flagged for inlining = 49, calls inlined = 49, statements flattened = 1172 [2023-12-20 14:54:20,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:54:20,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:54:20,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:54:20,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:54:20,798 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20" (1/1) ... [2023-12-20 14:54:20,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20" (1/1) ... [2023-12-20 14:54:20,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20" (1/1) ... [2023-12-20 14:54:20,823 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 14:54:20,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20" (1/1) ... [2023-12-20 14:54:20,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20" (1/1) ... [2023-12-20 14:54:20,835 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20" (1/1) ... [2023-12-20 14:54:20,853 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20" (1/1) ... [2023-12-20 14:54:20,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20" (1/1) ... [2023-12-20 14:54:20,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20" (1/1) ... [2023-12-20 14:54:20,863 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:54:20,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:54:20,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:54:20,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:54:20,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20" (1/1) ... [2023-12-20 14:54:20,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:54:20,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:54:20,921 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 14:54:20,944 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 14:54:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:54:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 14:54:20,970 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 14:54:20,971 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-20 14:54:20,971 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-20 14:54:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-20 14:54:20,972 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-20 14:54:20,972 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-20 14:54:20,972 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-20 14:54:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-20 14:54:20,973 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-20 14:54:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-20 14:54:20,973 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-20 14:54:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-20 14:54:20,973 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-20 14:54:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-20 14:54:20,973 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-20 14:54:20,973 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-20 14:54:20,973 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-20 14:54:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-20 14:54:20,974 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-20 14:54:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-20 14:54:20,974 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-20 14:54:20,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:54:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-20 14:54:20,975 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-20 14:54:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-20 14:54:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-20 14:54:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:54:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:54:20,976 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-20 14:54:20,976 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-20 14:54:20,977 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-20 14:54:20,977 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-20 14:54:21,107 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:54:21,109 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:54:21,770 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-12-20 14:54:21,770 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 14:54:21,826 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:54:21,887 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:54:21,887 INFO L309 CfgBuilder]: Removed 20 assume(true) statements. [2023-12-20 14:54:21,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:54:21 BoogieIcfgContainer [2023-12-20 14:54:21,887 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:54:21,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:54:21,891 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:54:21,893 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:54:21,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:54:20" (1/3) ... [2023-12-20 14:54:21,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b26e9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:54:21, skipping insertion in model container [2023-12-20 14:54:21,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:54:20" (2/3) ... [2023-12-20 14:54:21,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b26e9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:54:21, skipping insertion in model container [2023-12-20 14:54:21,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:54:21" (3/3) ... [2023-12-20 14:54:21,896 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.13.cil-1.c [2023-12-20 14:54:21,912 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:54:21,912 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:54:21,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:54:21,977 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;@773b4453, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:54:21,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:54:21,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 483 states, 420 states have (on average 1.7214285714285715) internal successors, (723), 428 states have internal predecessors, (723), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2023-12-20 14:54:21,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 14:54:21,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:21,994 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 14:54:21,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:21,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:21,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1456794269, now seen corresponding path program 1 times [2023-12-20 14:54:22,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:22,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366810071] [2023-12-20 14:54:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:22,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:22,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:22,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:22,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:22,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:54:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:22,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:54:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:22,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:54:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:22,512 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 14:54:22,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:22,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366810071] [2023-12-20 14:54:22,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366810071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:22,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:22,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:54:22,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144351860] [2023-12-20 14:54:22,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:22,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:54:22,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:22,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:54:22,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:54:22,537 INFO L87 Difference]: Start difference. First operand has 483 states, 420 states have (on average 1.7214285714285715) internal successors, (723), 428 states have internal predecessors, (723), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) 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 14:54:23,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:23,796 INFO L93 Difference]: Finished difference Result 1077 states and 1801 transitions. [2023-12-20 14:54:23,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:54:23,801 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 14:54:23,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:23,812 INFO L225 Difference]: With dead ends: 1077 [2023-12-20 14:54:23,812 INFO L226 Difference]: Without dead ends: 615 [2023-12-20 14:54:23,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:54:23,818 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 908 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:23,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 2292 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1757 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:54:23,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2023-12-20 14:54:23,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 578. [2023-12-20 14:54:23,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 496 states have (on average 1.596774193548387) internal successors, (792), 503 states have internal predecessors, (792), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (59), 55 states have call predecessors, (59), 54 states have call successors, (59) [2023-12-20 14:54:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 909 transitions. [2023-12-20 14:54:23,898 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 909 transitions. Word has length 57 [2023-12-20 14:54:23,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:23,898 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 909 transitions. [2023-12-20 14:54:23,899 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 14:54:23,899 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 909 transitions. [2023-12-20 14:54:23,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 14:54:23,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:23,902 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 14:54:23,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:54:23,902 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:23,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:23,903 INFO L85 PathProgramCache]: Analyzing trace with hash 894180259, now seen corresponding path program 1 times [2023-12-20 14:54:23,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:23,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46268363] [2023-12-20 14:54:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:23,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:23,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:23,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:24,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:24,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:24,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:54:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:24,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:54:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:54:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:24,040 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 14:54:24,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:24,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46268363] [2023-12-20 14:54:24,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46268363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:24,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:24,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 14:54:24,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98183721] [2023-12-20 14:54:24,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:24,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:54:24,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:24,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:54:24,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:54:24,042 INFO L87 Difference]: Start difference. First operand 578 states and 909 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-20 14:54:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:25,770 INFO L93 Difference]: Finished difference Result 1513 states and 2271 transitions. [2023-12-20 14:54:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 14:54:25,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 57 [2023-12-20 14:54:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:25,780 INFO L225 Difference]: With dead ends: 1513 [2023-12-20 14:54:25,781 INFO L226 Difference]: Without dead ends: 1313 [2023-12-20 14:54:25,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 14:54:25,784 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 3824 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3844 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:25,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3844 Valid, 2545 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 14:54:25,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2023-12-20 14:54:25,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1194. [2023-12-20 14:54:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 982 states have (on average 1.5010183299389002) internal successors, (1474), 997 states have internal predecessors, (1474), 129 states have call successors, (129), 75 states have call predecessors, (129), 81 states have return successors, (139), 123 states have call predecessors, (139), 125 states have call successors, (139) [2023-12-20 14:54:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1742 transitions. [2023-12-20 14:54:25,862 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1742 transitions. Word has length 57 [2023-12-20 14:54:25,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:25,862 INFO L495 AbstractCegarLoop]: Abstraction has 1194 states and 1742 transitions. [2023-12-20 14:54:25,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-20 14:54:25,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1742 transitions. [2023-12-20 14:54:25,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:54:25,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:25,864 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 14:54:25,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:54:25,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:25,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:25,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1131400916, now seen corresponding path program 1 times [2023-12-20 14:54:25,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:25,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100875205] [2023-12-20 14:54:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:25,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:25,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:25,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:25,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:25,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:25,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 14:54:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:25,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:54:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:25,991 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 14:54:25,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:25,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100875205] [2023-12-20 14:54:25,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100875205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:25,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:25,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:54:25,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680021687] [2023-12-20 14:54:25,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:25,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:54:25,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:25,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:54:25,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:54:25,997 INFO L87 Difference]: Start difference. First operand 1194 states and 1742 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 14:54:27,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:27,157 INFO L93 Difference]: Finished difference Result 2132 states and 3048 transitions. [2023-12-20 14:54:27,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:54:27,158 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 14:54:27,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:27,163 INFO L225 Difference]: With dead ends: 2132 [2023-12-20 14:54:27,163 INFO L226 Difference]: Without dead ends: 1322 [2023-12-20 14:54:27,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:54:27,165 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 674 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 2456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:27,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 2714 Invalid, 2456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:54:27,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2023-12-20 14:54:27,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1218. [2023-12-20 14:54:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 1000 states have (on average 1.489) internal successors, (1489), 1015 states have internal predecessors, (1489), 129 states have call successors, (129), 75 states have call predecessors, (129), 87 states have return successors, (145), 129 states have call predecessors, (145), 125 states have call successors, (145) [2023-12-20 14:54:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1763 transitions. [2023-12-20 14:54:27,204 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1763 transitions. Word has length 58 [2023-12-20 14:54:27,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:27,204 INFO L495 AbstractCegarLoop]: Abstraction has 1218 states and 1763 transitions. [2023-12-20 14:54:27,205 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 14:54:27,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1763 transitions. [2023-12-20 14:54:27,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:54:27,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:27,206 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 14:54:27,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:54:27,206 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:27,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:27,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1203787474, now seen corresponding path program 1 times [2023-12-20 14:54:27,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:27,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027013107] [2023-12-20 14:54:27,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:27,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:27,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:27,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:27,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:27,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:27,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 14:54:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:27,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:54:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:27,307 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 14:54:27,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:27,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027013107] [2023-12-20 14:54:27,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027013107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:27,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:27,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 14:54:27,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892284187] [2023-12-20 14:54:27,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:27,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:54:27,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:27,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:54:27,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:54:27,309 INFO L87 Difference]: Start difference. First operand 1218 states and 1763 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-20 14:54:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:29,079 INFO L93 Difference]: Finished difference Result 3350 states and 4744 transitions. [2023-12-20 14:54:29,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 14:54:29,079 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-12-20 14:54:29,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:29,085 INFO L225 Difference]: With dead ends: 3350 [2023-12-20 14:54:29,085 INFO L226 Difference]: Without dead ends: 1448 [2023-12-20 14:54:29,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 14:54:29,089 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 4395 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4415 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 2769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:29,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4415 Valid, 2197 Invalid, 2769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 14:54:29,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2023-12-20 14:54:29,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1311. [2023-12-20 14:54:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1058 states have (on average 1.447069943289225) internal successors, (1531), 1073 states have internal predecessors, (1531), 149 states have call successors, (149), 89 states have call predecessors, (149), 102 states have return successors, (166), 150 states have call predecessors, (166), 145 states have call successors, (166) [2023-12-20 14:54:29,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1846 transitions. [2023-12-20 14:54:29,135 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1846 transitions. Word has length 58 [2023-12-20 14:54:29,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:29,136 INFO L495 AbstractCegarLoop]: Abstraction has 1311 states and 1846 transitions. [2023-12-20 14:54:29,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-20 14:54:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1846 transitions. [2023-12-20 14:54:29,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 14:54:29,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:29,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:29,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:54:29,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:29,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:29,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1978175373, now seen corresponding path program 1 times [2023-12-20 14:54:29,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:29,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804837207] [2023-12-20 14:54:29,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:29,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:29,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:29,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:29,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:29,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:29,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:29,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:54:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:54:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:29,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:54:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:54:29,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:29,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804837207] [2023-12-20 14:54:29,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804837207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:29,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:29,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:54:29,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555395968] [2023-12-20 14:54:29,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:29,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:54:29,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:29,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:54:29,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:54:29,233 INFO L87 Difference]: Start difference. First operand 1311 states and 1846 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:54:30,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:30,365 INFO L93 Difference]: Finished difference Result 2397 states and 3306 transitions. [2023-12-20 14:54:30,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 14:54:30,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2023-12-20 14:54:30,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:30,372 INFO L225 Difference]: With dead ends: 2397 [2023-12-20 14:54:30,372 INFO L226 Difference]: Without dead ends: 1470 [2023-12-20 14:54:30,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:54:30,375 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 667 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 2679 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:30,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 2679 Invalid, 2414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:54:30,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-12-20 14:54:30,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1343. [2023-12-20 14:54:30,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1082 states have (on average 1.4343807763401109) internal successors, (1552), 1097 states have internal predecessors, (1552), 149 states have call successors, (149), 89 states have call predecessors, (149), 110 states have return successors, (174), 158 states have call predecessors, (174), 145 states have call successors, (174) [2023-12-20 14:54:30,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1875 transitions. [2023-12-20 14:54:30,423 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1875 transitions. Word has length 80 [2023-12-20 14:54:30,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:30,424 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 1875 transitions. [2023-12-20 14:54:30,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:54:30,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1875 transitions. [2023-12-20 14:54:30,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 14:54:30,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:30,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:30,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:54:30,426 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:30,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:30,426 INFO L85 PathProgramCache]: Analyzing trace with hash -388519221, now seen corresponding path program 1 times [2023-12-20 14:54:30,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:30,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140362863] [2023-12-20 14:54:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:30,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:54:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:54:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:54:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:54:30,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:30,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140362863] [2023-12-20 14:54:30,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140362863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:30,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:30,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:54:30,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418392319] [2023-12-20 14:54:30,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:30,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:54:30,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:30,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:54:30,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:54:30,577 INFO L87 Difference]: Start difference. First operand 1343 states and 1875 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:54:31,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:31,818 INFO L93 Difference]: Finished difference Result 3217 states and 4316 transitions. [2023-12-20 14:54:31,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 14:54:31,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-12-20 14:54:31,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:31,827 INFO L225 Difference]: With dead ends: 3217 [2023-12-20 14:54:31,827 INFO L226 Difference]: Without dead ends: 2259 [2023-12-20 14:54:31,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-20 14:54:31,832 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1484 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:31,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 2042 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:54:31,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2023-12-20 14:54:31,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 1965. [2023-12-20 14:54:31,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1556 states have (on average 1.3888174807197944) internal successors, (2161), 1584 states have internal predecessors, (2161), 225 states have call successors, (225), 142 states have call predecessors, (225), 182 states have return successors, (287), 241 states have call predecessors, (287), 221 states have call successors, (287) [2023-12-20 14:54:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 2673 transitions. [2023-12-20 14:54:31,934 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 2673 transitions. Word has length 80 [2023-12-20 14:54:31,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:31,935 INFO L495 AbstractCegarLoop]: Abstraction has 1965 states and 2673 transitions. [2023-12-20 14:54:31,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:54:31,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 2673 transitions. [2023-12-20 14:54:31,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 14:54:31,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:31,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:31,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:54:31,941 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:31,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:31,941 INFO L85 PathProgramCache]: Analyzing trace with hash 35127501, now seen corresponding path program 1 times [2023-12-20 14:54:31,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:31,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386050902] [2023-12-20 14:54:31,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:31,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:31,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:32,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:32,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:54:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:32,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:54:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:54:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:54:32,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:32,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386050902] [2023-12-20 14:54:32,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386050902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:32,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:32,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:32,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365854320] [2023-12-20 14:54:32,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:32,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:32,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:32,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:32,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:32,031 INFO L87 Difference]: Start difference. First operand 1965 states and 2673 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-20 14:54:32,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:32,808 INFO L93 Difference]: Finished difference Result 5338 states and 7169 transitions. [2023-12-20 14:54:32,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 14:54:32,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2023-12-20 14:54:32,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:32,844 INFO L225 Difference]: With dead ends: 5338 [2023-12-20 14:54:32,844 INFO L226 Difference]: Without dead ends: 3760 [2023-12-20 14:54:32,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:54:32,848 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1770 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:32,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1805 Valid, 1335 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:54:32,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3760 states. [2023-12-20 14:54:32,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3760 to 3544. [2023-12-20 14:54:32,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3544 states, 2754 states have (on average 1.3376906318082789) internal successors, (3684), 2818 states have internal predecessors, (3684), 418 states have call successors, (418), 276 states have call predecessors, (418), 370 states have return successors, (627), 454 states have call predecessors, (627), 414 states have call successors, (627) [2023-12-20 14:54:32,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 4729 transitions. [2023-12-20 14:54:32,972 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 4729 transitions. Word has length 80 [2023-12-20 14:54:32,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:32,972 INFO L495 AbstractCegarLoop]: Abstraction has 3544 states and 4729 transitions. [2023-12-20 14:54:32,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-20 14:54:32,972 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 4729 transitions. [2023-12-20 14:54:32,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 14:54:32,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:32,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:32,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:54:32,974 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:32,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash 112028299, now seen corresponding path program 1 times [2023-12-20 14:54:32,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:32,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157061892] [2023-12-20 14:54:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:32,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:32,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:54:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:54:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:54:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,018 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:54:33,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:33,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157061892] [2023-12-20 14:54:33,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157061892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:33,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:33,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:54:33,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355884119] [2023-12-20 14:54:33,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:33,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:54:33,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:33,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:54:33,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:54:33,020 INFO L87 Difference]: Start difference. First operand 3544 states and 4729 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:54:33,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:33,715 INFO L93 Difference]: Finished difference Result 5238 states and 6888 transitions. [2023-12-20 14:54:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:54:33,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-12-20 14:54:33,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:33,723 INFO L225 Difference]: With dead ends: 5238 [2023-12-20 14:54:33,723 INFO L226 Difference]: Without dead ends: 2081 [2023-12-20 14:54:33,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:54:33,729 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1100 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:33,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 1262 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:54:33,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2023-12-20 14:54:33,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 1965. [2023-12-20 14:54:33,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1965 states, 1556 states have (on average 1.3611825192802056) internal successors, (2118), 1584 states have internal predecessors, (2118), 225 states have call successors, (225), 142 states have call predecessors, (225), 182 states have return successors, (287), 241 states have call predecessors, (287), 221 states have call successors, (287) [2023-12-20 14:54:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 2630 transitions. [2023-12-20 14:54:33,806 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 2630 transitions. Word has length 80 [2023-12-20 14:54:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:33,807 INFO L495 AbstractCegarLoop]: Abstraction has 1965 states and 2630 transitions. [2023-12-20 14:54:33,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:54:33,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 2630 transitions. [2023-12-20 14:54:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 14:54:33,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:33,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:33,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:54:33,808 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:33,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:33,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2031206633, now seen corresponding path program 1 times [2023-12-20 14:54:33,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:33,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148192893] [2023-12-20 14:54:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:33,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:54:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:54:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 14:54:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:54:33,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:33,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148192893] [2023-12-20 14:54:33,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148192893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:33,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:33,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:54:33,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293777095] [2023-12-20 14:54:33,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:33,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:54:33,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:33,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:54:33,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:54:33,912 INFO L87 Difference]: Start difference. First operand 1965 states and 2630 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:54:35,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:35,331 INFO L93 Difference]: Finished difference Result 4566 states and 6007 transitions. [2023-12-20 14:54:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-20 14:54:35,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2023-12-20 14:54:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:35,339 INFO L225 Difference]: With dead ends: 4566 [2023-12-20 14:54:35,339 INFO L226 Difference]: Without dead ends: 2701 [2023-12-20 14:54:35,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2023-12-20 14:54:35,343 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 2495 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 1811 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2539 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 1811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:35,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2539 Valid, 1747 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 1811 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:54:35,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2023-12-20 14:54:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2537. [2023-12-20 14:54:35,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 1972 states have (on average 1.317951318458418) internal successors, (2599), 2008 states have internal predecessors, (2599), 303 states have call successors, (303), 190 states have call predecessors, (303), 260 states have return successors, (420), 341 states have call predecessors, (420), 299 states have call successors, (420) [2023-12-20 14:54:35,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3322 transitions. [2023-12-20 14:54:35,471 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3322 transitions. Word has length 81 [2023-12-20 14:54:35,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:35,471 INFO L495 AbstractCegarLoop]: Abstraction has 2537 states and 3322 transitions. [2023-12-20 14:54:35,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:54:35,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3322 transitions. [2023-12-20 14:54:35,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 14:54:35,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:35,473 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:35,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:54:35,473 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:35,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:35,474 INFO L85 PathProgramCache]: Analyzing trace with hash -782439074, now seen corresponding path program 1 times [2023-12-20 14:54:35,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:35,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799498386] [2023-12-20 14:54:35,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:35,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:54:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:54:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 14:54:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:54:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 14:54:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 14:54:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:54:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-20 14:54:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:54:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-20 14:54:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-20 14:54:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,619 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-20 14:54:35,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:35,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799498386] [2023-12-20 14:54:35,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799498386] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:54:35,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042517410] [2023-12-20 14:54:35,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:35,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:54:35,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:54:35,622 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:54:35,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 14:54:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:54:35,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:54:35,889 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-20 14:54:35,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:54:35,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042517410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:35,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:54:35,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-20 14:54:35,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069335287] [2023-12-20 14:54:35,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:35,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:54:35,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:35,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:54:35,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:54:35,891 INFO L87 Difference]: Start difference. First operand 2537 states and 3322 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 14:54:36,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:36,107 INFO L93 Difference]: Finished difference Result 6504 states and 8279 transitions. [2023-12-20 14:54:36,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:54:36,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-12-20 14:54:36,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:36,140 INFO L225 Difference]: With dead ends: 6504 [2023-12-20 14:54:36,141 INFO L226 Difference]: Without dead ends: 4496 [2023-12-20 14:54:36,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:54:36,145 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 57 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:36,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1373 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:54:36,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2023-12-20 14:54:36,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4453. [2023-12-20 14:54:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4453 states, 3421 states have (on average 1.2776965799473838) internal successors, (4371), 3486 states have internal predecessors, (4371), 537 states have call successors, (537), 372 states have call predecessors, (537), 493 states have return successors, (727), 597 states have call predecessors, (727), 533 states have call successors, (727) [2023-12-20 14:54:36,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 5635 transitions. [2023-12-20 14:54:36,343 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 5635 transitions. Word has length 145 [2023-12-20 14:54:36,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:36,344 INFO L495 AbstractCegarLoop]: Abstraction has 4453 states and 5635 transitions. [2023-12-20 14:54:36,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 14:54:36,344 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 5635 transitions. [2023-12-20 14:54:36,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-20 14:54:36,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:36,348 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:36,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 14:54:36,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 14:54:36,554 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:36,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:36,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1624813002, now seen corresponding path program 1 times [2023-12-20 14:54:36,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:36,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669539978] [2023-12-20 14:54:36,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:36,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:54:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:54:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 14:54:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:54:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 14:54:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 14:54:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 14:54:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:54:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-20 14:54:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-20 14:54:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:54:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-20 14:54:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 14:54:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-20 14:54:36,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:36,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669539978] [2023-12-20 14:54:36,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669539978] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:54:36,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297359710] [2023-12-20 14:54:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:36,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:54:36,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:54:36,696 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:54:36,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 14:54:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:36,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:54:36,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:54:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-20 14:54:37,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:54:37,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297359710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:37,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:54:37,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-20 14:54:37,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771177163] [2023-12-20 14:54:37,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:37,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:54:37,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:37,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:54:37,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:54:37,019 INFO L87 Difference]: Start difference. First operand 4453 states and 5635 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-20 14:54:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:37,370 INFO L93 Difference]: Finished difference Result 12585 states and 15637 transitions. [2023-12-20 14:54:37,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:54:37,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 175 [2023-12-20 14:54:37,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:37,392 INFO L225 Difference]: With dead ends: 12585 [2023-12-20 14:54:37,392 INFO L226 Difference]: Without dead ends: 8519 [2023-12-20 14:54:37,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:54:37,398 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 48 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:37,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1372 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:54:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8519 states. [2023-12-20 14:54:37,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8519 to 8511. [2023-12-20 14:54:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8511 states, 6492 states have (on average 1.2509242144177448) internal successors, (8121), 6617 states have internal predecessors, (8121), 1037 states have call successors, (1037), 736 states have call predecessors, (1037), 980 states have return successors, (1420), 1160 states have call predecessors, (1420), 1033 states have call successors, (1420) [2023-12-20 14:54:37,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8511 states to 8511 states and 10578 transitions. [2023-12-20 14:54:37,777 INFO L78 Accepts]: Start accepts. Automaton has 8511 states and 10578 transitions. Word has length 175 [2023-12-20 14:54:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:37,777 INFO L495 AbstractCegarLoop]: Abstraction has 8511 states and 10578 transitions. [2023-12-20 14:54:37,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-20 14:54:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 8511 states and 10578 transitions. [2023-12-20 14:54:37,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-20 14:54:37,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:37,781 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:37,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 14:54:37,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-20 14:54:37,986 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:37,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:37,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2019179788, now seen corresponding path program 1 times [2023-12-20 14:54:37,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:37,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283610985] [2023-12-20 14:54:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:37,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:54:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:54:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 14:54:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:54:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 14:54:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 14:54:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-20 14:54:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:54:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-20 14:54:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-20 14:54:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:54:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-20 14:54:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 14:54:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-20 14:54:38,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:38,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283610985] [2023-12-20 14:54:38,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283610985] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:54:38,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070848277] [2023-12-20 14:54:38,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:38,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:54:38,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:54:38,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:54:38,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 14:54:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:38,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:54:38,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:54:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-20 14:54:38,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:54:38,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070848277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:38,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:54:38,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-20 14:54:38,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258773910] [2023-12-20 14:54:38,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:38,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:54:38,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:38,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:54:38,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:54:38,420 INFO L87 Difference]: Start difference. First operand 8511 states and 10578 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 14:54:38,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:38,745 INFO L93 Difference]: Finished difference Result 14521 states and 18298 transitions. [2023-12-20 14:54:38,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:54:38,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 175 [2023-12-20 14:54:38,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:38,748 INFO L225 Difference]: With dead ends: 14521 [2023-12-20 14:54:38,748 INFO L226 Difference]: Without dead ends: 377 [2023-12-20 14:54:38,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:54:38,767 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 639 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:38,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 681 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:54:38,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-20 14:54:38,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2023-12-20 14:54:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 341 states have (on average 1.6422287390029326) internal successors, (560), 343 states have internal predecessors, (560), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-20 14:54:38,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 616 transitions. [2023-12-20 14:54:38,777 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 616 transitions. Word has length 175 [2023-12-20 14:54:38,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:38,777 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 616 transitions. [2023-12-20 14:54:38,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 14:54:38,777 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 616 transitions. [2023-12-20 14:54:38,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 14:54:38,778 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:38,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:38,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 14:54:38,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:54:38,985 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:38,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:38,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1295721598, now seen corresponding path program 1 times [2023-12-20 14:54:38,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:38,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906991590] [2023-12-20 14:54:38,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:38,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:39,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:39,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:54:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:39,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 14:54:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:39,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 14:54:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:39,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 14:54:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:39,156 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 14:54:39,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:39,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906991590] [2023-12-20 14:54:39,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906991590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:39,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:39,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:54:39,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128084706] [2023-12-20 14:54:39,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:39,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:54:39,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:39,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:54:39,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:54:39,157 INFO L87 Difference]: Start difference. First operand 377 states and 616 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:54:40,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:40,598 INFO L93 Difference]: Finished difference Result 884 states and 1466 transitions. [2023-12-20 14:54:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 14:54:40,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 14:54:40,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:40,605 INFO L225 Difference]: With dead ends: 884 [2023-12-20 14:54:40,605 INFO L226 Difference]: Without dead ends: 517 [2023-12-20 14:54:40,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:54:40,606 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1057 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:40,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 692 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 14:54:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-12-20 14:54:40,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 377. [2023-12-20 14:54:40,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 341 states have (on average 1.6392961876832846) internal successors, (559), 343 states have internal predecessors, (559), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-20 14:54:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 615 transitions. [2023-12-20 14:54:40,619 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 615 transitions. Word has length 172 [2023-12-20 14:54:40,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:40,619 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 615 transitions. [2023-12-20 14:54:40,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:54:40,619 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 615 transitions. [2023-12-20 14:54:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 14:54:40,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:40,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:40,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:54:40,620 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:40,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:40,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1595376512, now seen corresponding path program 1 times [2023-12-20 14:54:40,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:40,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135234310] [2023-12-20 14:54:40,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:40,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:40,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:40,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:54:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:40,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 14:54:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:40,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 14:54:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:40,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 14:54:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:54:40,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:40,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135234310] [2023-12-20 14:54:40,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135234310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:40,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:40,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:54:40,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63242174] [2023-12-20 14:54:40,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:40,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:54:40,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:40,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:54:40,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:54:40,779 INFO L87 Difference]: Start difference. First operand 377 states and 615 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:54:42,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:42,172 INFO L93 Difference]: Finished difference Result 876 states and 1449 transitions. [2023-12-20 14:54:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 14:54:42,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 172 [2023-12-20 14:54:42,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:42,176 INFO L225 Difference]: With dead ends: 876 [2023-12-20 14:54:42,176 INFO L226 Difference]: Without dead ends: 517 [2023-12-20 14:54:42,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:54:42,178 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1048 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:42,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 690 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:54:42,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-12-20 14:54:42,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 377. [2023-12-20 14:54:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 341 states have (on average 1.6363636363636365) internal successors, (558), 343 states have internal predecessors, (558), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-20 14:54:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 614 transitions. [2023-12-20 14:54:42,190 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 614 transitions. Word has length 172 [2023-12-20 14:54:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:42,190 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 614 transitions. [2023-12-20 14:54:42,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:54:42,190 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 614 transitions. [2023-12-20 14:54:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 14:54:42,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:42,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:42,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:54:42,191 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:42,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:42,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1294399106, now seen corresponding path program 1 times [2023-12-20 14:54:42,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:42,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300875763] [2023-12-20 14:54:42,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:42,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:42,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:42,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:54:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:42,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 14:54:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:42,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 14:54:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:42,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 14:54:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:42,383 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 14:54:42,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:42,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300875763] [2023-12-20 14:54:42,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300875763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:42,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:42,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:54:42,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880300533] [2023-12-20 14:54:42,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:42,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:54:42,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:42,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:54:42,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:54:42,384 INFO L87 Difference]: Start difference. First operand 377 states and 614 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 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 14:54:44,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:44,908 INFO L93 Difference]: Finished difference Result 1392 states and 2318 transitions. [2023-12-20 14:54:44,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:54:44,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 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 172 [2023-12-20 14:54:44,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:44,911 INFO L225 Difference]: With dead ends: 1392 [2023-12-20 14:54:44,912 INFO L226 Difference]: Without dead ends: 1035 [2023-12-20 14:54:44,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:54:44,914 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 1601 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:44,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 1167 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 14:54:44,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2023-12-20 14:54:44,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 754. [2023-12-20 14:54:44,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 689 states have (on average 1.6473149492017416) internal successors, (1135), 692 states have internal predecessors, (1135), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2023-12-20 14:54:44,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1238 transitions. [2023-12-20 14:54:44,936 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1238 transitions. Word has length 172 [2023-12-20 14:54:44,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:44,936 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1238 transitions. [2023-12-20 14:54:44,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 4 states have internal predecessors, (161), 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 14:54:44,936 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1238 transitions. [2023-12-20 14:54:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 14:54:44,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:44,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:44,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:54:44,937 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:44,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:44,937 INFO L85 PathProgramCache]: Analyzing trace with hash -289293830, now seen corresponding path program 1 times [2023-12-20 14:54:44,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:44,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986208954] [2023-12-20 14:54:44,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:44,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:45,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:54:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:45,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 14:54:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:45,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 14:54:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:45,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 14:54:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:45,156 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 14:54:45,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:45,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986208954] [2023-12-20 14:54:45,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986208954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:45,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:45,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:45,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490706587] [2023-12-20 14:54:45,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:45,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:45,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:45,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:45,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:45,158 INFO L87 Difference]: Start difference. First operand 754 states and 1238 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:54:48,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:48,781 INFO L93 Difference]: Finished difference Result 2307 states and 3848 transitions. [2023-12-20 14:54:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:54:48,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-20 14:54:48,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:48,785 INFO L225 Difference]: With dead ends: 2307 [2023-12-20 14:54:48,785 INFO L226 Difference]: Without dead ends: 1573 [2023-12-20 14:54:48,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:54:48,787 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 1640 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 4012 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 4079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 4012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:48,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1660 Valid, 2232 Invalid, 4079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 4012 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 14:54:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2023-12-20 14:54:48,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1102. [2023-12-20 14:54:48,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1008 states have (on average 1.6408730158730158) internal successors, (1654), 1012 states have internal predecessors, (1654), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2023-12-20 14:54:48,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1803 transitions. [2023-12-20 14:54:48,825 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1803 transitions. Word has length 172 [2023-12-20 14:54:48,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:48,825 INFO L495 AbstractCegarLoop]: Abstraction has 1102 states and 1803 transitions. [2023-12-20 14:54:48,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:54:48,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1803 transitions. [2023-12-20 14:54:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 14:54:48,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:48,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:48,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:54:48,826 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:48,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash 96568572, now seen corresponding path program 1 times [2023-12-20 14:54:48,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:48,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245763172] [2023-12-20 14:54:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:48,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:48,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:48,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:54:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 14:54:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:49,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 14:54:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 14:54:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:49,020 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 14:54:49,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:49,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245763172] [2023-12-20 14:54:49,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245763172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:49,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:49,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:49,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390592559] [2023-12-20 14:54:49,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:49,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:49,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:49,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:49,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:49,022 INFO L87 Difference]: Start difference. First operand 1102 states and 1803 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:54:52,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:52,314 INFO L93 Difference]: Finished difference Result 3648 states and 6075 transitions. [2023-12-20 14:54:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:54:52,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-20 14:54:52,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:52,323 INFO L225 Difference]: With dead ends: 3648 [2023-12-20 14:54:52,324 INFO L226 Difference]: Without dead ends: 2566 [2023-12-20 14:54:52,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:54:52,329 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1760 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 3325 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:52,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1780 Valid, 1440 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3325 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 14:54:52,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2023-12-20 14:54:52,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 1799. [2023-12-20 14:54:52,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1647 states have (on average 1.6350941105039465) internal successors, (2693), 1653 states have internal predecessors, (2693), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2023-12-20 14:54:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 2938 transitions. [2023-12-20 14:54:52,415 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 2938 transitions. Word has length 172 [2023-12-20 14:54:52,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:52,416 INFO L495 AbstractCegarLoop]: Abstraction has 1799 states and 2938 transitions. [2023-12-20 14:54:52,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:54:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 2938 transitions. [2023-12-20 14:54:52,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 14:54:52,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:52,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:52,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:54:52,417 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:52,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:52,418 INFO L85 PathProgramCache]: Analyzing trace with hash -168078918, now seen corresponding path program 1 times [2023-12-20 14:54:52,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:52,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239780661] [2023-12-20 14:54:52,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:52,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:52,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:54:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:52,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 14:54:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 14:54:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:52,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 14:54:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:52,613 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 14:54:52,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:52,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239780661] [2023-12-20 14:54:52,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239780661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:52,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:52,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:52,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739261679] [2023-12-20 14:54:52,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:52,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:52,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:52,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:52,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:52,615 INFO L87 Difference]: Start difference. First operand 1799 states and 2938 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:54:56,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:56,182 INFO L93 Difference]: Finished difference Result 6217 states and 10318 transitions. [2023-12-20 14:54:56,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:54:56,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-20 14:54:56,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:56,193 INFO L225 Difference]: With dead ends: 6217 [2023-12-20 14:54:56,193 INFO L226 Difference]: Without dead ends: 4438 [2023-12-20 14:54:56,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:54:56,198 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1632 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 4006 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 4075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:56,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 2230 Invalid, 4075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4006 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 14:54:56,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4438 states. [2023-12-20 14:54:56,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4438 to 3194. [2023-12-20 14:54:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 2926 states have (on average 1.6305536568694463) internal successors, (4771), 2936 states have internal predecessors, (4771), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2023-12-20 14:54:56,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 5214 transitions. [2023-12-20 14:54:56,337 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 5214 transitions. Word has length 172 [2023-12-20 14:54:56,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:56,337 INFO L495 AbstractCegarLoop]: Abstraction has 3194 states and 5214 transitions. [2023-12-20 14:54:56,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:54:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 5214 transitions. [2023-12-20 14:54:56,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 14:54:56,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:56,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:56,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:54:56,339 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:56,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:56,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1763046716, now seen corresponding path program 1 times [2023-12-20 14:54:56,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:56,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334278099] [2023-12-20 14:54:56,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:56,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:56,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:56,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:54:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:56,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 14:54:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:56,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 14:54:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:56,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 14:54:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:56,537 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 14:54:56,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:56,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334278099] [2023-12-20 14:54:56,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334278099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:56,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:56,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:56,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351196581] [2023-12-20 14:54:56,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:56,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:56,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:56,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:56,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:56,539 INFO L87 Difference]: Start difference. First operand 3194 states and 5214 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:55:00,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:55:00,205 INFO L93 Difference]: Finished difference Result 11354 states and 18820 transitions. [2023-12-20 14:55:00,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:55:00,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-20 14:55:00,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:55:00,226 INFO L225 Difference]: With dead ends: 11354 [2023-12-20 14:55:00,226 INFO L226 Difference]: Without dead ends: 8180 [2023-12-20 14:55:00,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:55:00,235 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1634 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 3992 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 4061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:55:00,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 2230 Invalid, 4061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3992 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 14:55:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8180 states. [2023-12-20 14:55:00,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8180 to 5989. [2023-12-20 14:55:00,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5989 states, 5489 states have (on average 1.627436691564948) internal successors, (8933), 5507 states have internal predecessors, (8933), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2023-12-20 14:55:00,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5989 states to 5989 states and 9790 transitions. [2023-12-20 14:55:00,498 INFO L78 Accepts]: Start accepts. Automaton has 5989 states and 9790 transitions. Word has length 172 [2023-12-20 14:55:00,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:55:00,498 INFO L495 AbstractCegarLoop]: Abstraction has 5989 states and 9790 transitions. [2023-12-20 14:55:00,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:55:00,499 INFO L276 IsEmpty]: Start isEmpty. Operand 5989 states and 9790 transitions. [2023-12-20 14:55:00,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 14:55:00,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:55:00,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:55:00,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:55:00,503 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:55:00,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:55:00,503 INFO L85 PathProgramCache]: Analyzing trace with hash 439867770, now seen corresponding path program 1 times [2023-12-20 14:55:00,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:55:00,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177162528] [2023-12-20 14:55:00,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:55:00,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:55:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:00,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:55:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:00,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:55:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 14:55:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 14:55:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:00,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 14:55:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:00,695 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 14:55:00,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:55:00,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177162528] [2023-12-20 14:55:00,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177162528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:55:00,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:55:00,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:55:00,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81781398] [2023-12-20 14:55:00,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:55:00,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:55:00,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:55:00,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:55:00,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:55:00,697 INFO L87 Difference]: Start difference. First operand 5989 states and 9790 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:55:04,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:55:04,419 INFO L93 Difference]: Finished difference Result 21612 states and 35854 transitions. [2023-12-20 14:55:04,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:55:04,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-20 14:55:04,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:55:04,458 INFO L225 Difference]: With dead ends: 21612 [2023-12-20 14:55:04,458 INFO L226 Difference]: Without dead ends: 15643 [2023-12-20 14:55:04,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:55:04,481 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1630 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 3964 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 4033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:55:04,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 2230 Invalid, 4033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3964 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 14:55:04,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15643 states. [2023-12-20 14:55:04,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15643 to 11609. [2023-12-20 14:55:04,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11609 states, 10645 states have (on average 1.6260216063879755) internal successors, (17309), 10679 states have internal predecessors, (17309), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2023-12-20 14:55:04,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11609 states to 11609 states and 19048 transitions. [2023-12-20 14:55:04,965 INFO L78 Accepts]: Start accepts. Automaton has 11609 states and 19048 transitions. Word has length 172 [2023-12-20 14:55:04,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:55:04,965 INFO L495 AbstractCegarLoop]: Abstraction has 11609 states and 19048 transitions. [2023-12-20 14:55:04,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:55:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 11609 states and 19048 transitions. [2023-12-20 14:55:04,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 14:55:04,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:55:04,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:55:04,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:55:04,971 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:55:04,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:55:04,971 INFO L85 PathProgramCache]: Analyzing trace with hash 778155320, now seen corresponding path program 1 times [2023-12-20 14:55:04,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:55:04,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106195598] [2023-12-20 14:55:04,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:55:04,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:55:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:55:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:05,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:55:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:05,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 14:55:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 14:55:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:05,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 14:55:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:05,146 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 14:55:05,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:55:05,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106195598] [2023-12-20 14:55:05,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106195598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:55:05,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:55:05,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:55:05,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660819983] [2023-12-20 14:55:05,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:55:05,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:55:05,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:55:05,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:55:05,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:55:05,148 INFO L87 Difference]: Start difference. First operand 11609 states and 19048 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:55:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:55:09,305 INFO L93 Difference]: Finished difference Result 42162 states and 70178 transitions. [2023-12-20 14:55:09,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:55:09,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-20 14:55:09,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:55:09,403 INFO L225 Difference]: With dead ends: 42162 [2023-12-20 14:55:09,403 INFO L226 Difference]: Without dead ends: 30573 [2023-12-20 14:55:09,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:55:09,427 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1629 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 3951 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 4020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:55:09,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 2230 Invalid, 4020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3951 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 14:55:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30573 states. [2023-12-20 14:55:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30573 to 22878. [2023-12-20 14:55:10,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22878 states, 20986 states have (on average 1.6250357381111218) internal successors, (34103), 21052 states have internal predecessors, (34103), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2023-12-20 14:55:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22878 states to 22878 states and 37768 transitions. [2023-12-20 14:55:10,438 INFO L78 Accepts]: Start accepts. Automaton has 22878 states and 37768 transitions. Word has length 172 [2023-12-20 14:55:10,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:55:10,438 INFO L495 AbstractCegarLoop]: Abstraction has 22878 states and 37768 transitions. [2023-12-20 14:55:10,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:55:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 22878 states and 37768 transitions. [2023-12-20 14:55:10,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 14:55:10,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:55:10,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:55:10,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:55:10,448 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:55:10,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:55:10,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1204709818, now seen corresponding path program 1 times [2023-12-20 14:55:10,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:55:10,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811326954] [2023-12-20 14:55:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:55:10,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:55:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:55:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:10,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:55:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:10,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 14:55:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:10,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 14:55:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:10,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 14:55:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:10,637 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 14:55:10,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:55:10,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811326954] [2023-12-20 14:55:10,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811326954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:55:10,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:55:10,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:55:10,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226289944] [2023-12-20 14:55:10,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:55:10,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:55:10,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:55:10,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:55:10,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:55:10,639 INFO L87 Difference]: Start difference. First operand 22878 states and 37768 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:55:15,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:55:15,658 INFO L93 Difference]: Finished difference Result 83261 states and 139424 transitions. [2023-12-20 14:55:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:55:15,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-20 14:55:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:55:15,833 INFO L225 Difference]: With dead ends: 83261 [2023-12-20 14:55:15,834 INFO L226 Difference]: Without dead ends: 60403 [2023-12-20 14:55:15,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:55:15,886 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1628 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 3938 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 4007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:55:15,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 2230 Invalid, 4007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3938 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 14:55:15,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60403 states. [2023-12-20 14:55:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60403 to 45479. [2023-12-20 14:55:17,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45479 states, 41731 states have (on average 1.6243320313436054) internal successors, (67785), 41861 states have internal predecessors, (67785), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2023-12-20 14:55:17,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45479 states to 45479 states and 75788 transitions. [2023-12-20 14:55:17,786 INFO L78 Accepts]: Start accepts. Automaton has 45479 states and 75788 transitions. Word has length 172 [2023-12-20 14:55:17,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:55:17,786 INFO L495 AbstractCegarLoop]: Abstraction has 45479 states and 75788 transitions. [2023-12-20 14:55:17,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:55:17,787 INFO L276 IsEmpty]: Start isEmpty. Operand 45479 states and 75788 transitions. [2023-12-20 14:55:17,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 14:55:17,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:55:17,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:55:17,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:55:17,806 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:55:17,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:55:17,807 INFO L85 PathProgramCache]: Analyzing trace with hash 664280312, now seen corresponding path program 1 times [2023-12-20 14:55:17,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:55:17,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392417115] [2023-12-20 14:55:17,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:55:17,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:55:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:17,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:55:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:17,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:55:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:17,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 14:55:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:18,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 14:55:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:18,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 14:55:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:18,017 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 14:55:18,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:55:18,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392417115] [2023-12-20 14:55:18,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392417115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:55:18,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:55:18,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:55:18,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769817097] [2023-12-20 14:55:18,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:55:18,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:55:18,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:55:18,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:55:18,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:55:18,019 INFO L87 Difference]: Start difference. First operand 45479 states and 75788 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:55:24,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:55:24,556 INFO L93 Difference]: Finished difference Result 165460 states and 279766 transitions. [2023-12-20 14:55:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:55:24,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-20 14:55:24,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:55:24,960 INFO L225 Difference]: With dead ends: 165460 [2023-12-20 14:55:24,961 INFO L226 Difference]: Without dead ends: 120001 [2023-12-20 14:55:25,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:55:25,074 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1627 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 3994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:55:25,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 2230 Invalid, 3994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3925 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 14:55:25,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120001 states. [2023-12-20 14:55:29,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120001 to 90808. [2023-12-20 14:55:29,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90808 states, 83348 states have (on average 1.6237822143302778) internal successors, (135339), 83606 states have internal predecessors, (135339), 5661 states have call successors, (5661), 1543 states have call predecessors, (5661), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2023-12-20 14:55:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90808 states to 90808 states and 153476 transitions. [2023-12-20 14:55:29,595 INFO L78 Accepts]: Start accepts. Automaton has 90808 states and 153476 transitions. Word has length 172 [2023-12-20 14:55:29,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:55:29,596 INFO L495 AbstractCegarLoop]: Abstraction has 90808 states and 153476 transitions. [2023-12-20 14:55:29,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:55:29,596 INFO L276 IsEmpty]: Start isEmpty. Operand 90808 states and 153476 transitions. [2023-12-20 14:55:29,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 14:55:29,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:55:29,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:55:29,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:55:29,643 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:55:29,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:55:29,643 INFO L85 PathProgramCache]: Analyzing trace with hash 508299770, now seen corresponding path program 1 times [2023-12-20 14:55:29,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:55:29,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370517426] [2023-12-20 14:55:29,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:55:29,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:55:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:29,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:55:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:29,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:55:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:29,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 14:55:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:29,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 14:55:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:29,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 14:55:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:29,882 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 14:55:29,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:55:29,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370517426] [2023-12-20 14:55:29,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370517426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:55:29,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:55:29,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:55:29,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831926675] [2023-12-20 14:55:29,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:55:29,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:55:29,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:55:29,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:55:29,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:55:29,885 INFO L87 Difference]: Start difference. First operand 90808 states and 153476 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:55:40,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:55:40,039 INFO L93 Difference]: Finished difference Result 329859 states and 566092 transitions. [2023-12-20 14:55:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:55:40,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-20 14:55:40,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:55:41,139 INFO L225 Difference]: With dead ends: 329859 [2023-12-20 14:55:41,140 INFO L226 Difference]: Without dead ends: 239071 [2023-12-20 14:55:41,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:55:41,515 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1739 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 3258 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:55:41,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 1440 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3258 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 14:55:41,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239071 states. [2023-12-20 14:55:49,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239071 to 181721. [2023-12-20 14:55:49,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181721 states, 166837 states have (on average 1.6233149720985154) internal successors, (270829), 167351 states have internal predecessors, (270829), 11293 states have call successors, (11293), 3079 states have call predecessors, (11293), 3590 states have return successors, (31486), 11802 states have call predecessors, (31486), 11291 states have call successors, (31486) [2023-12-20 14:55:50,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181721 states to 181721 states and 313608 transitions. [2023-12-20 14:55:50,789 INFO L78 Accepts]: Start accepts. Automaton has 181721 states and 313608 transitions. Word has length 172 [2023-12-20 14:55:50,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:55:50,789 INFO L495 AbstractCegarLoop]: Abstraction has 181721 states and 313608 transitions. [2023-12-20 14:55:50,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:55:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand 181721 states and 313608 transitions. [2023-12-20 14:55:50,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 14:55:50,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:55:50,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:55:50,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:55:50,852 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:55:50,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:55:50,852 INFO L85 PathProgramCache]: Analyzing trace with hash 918910136, now seen corresponding path program 1 times [2023-12-20 14:55:50,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:55:50,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571047284] [2023-12-20 14:55:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:55:50,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:55:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:50,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:55:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:50,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:55:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:51,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 14:55:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:51,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 14:55:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:51,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 14:55:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:51,055 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 14:55:51,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:55:51,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571047284] [2023-12-20 14:55:51,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571047284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:55:51,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:55:51,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:55:51,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940301174] [2023-12-20 14:55:51,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:55:51,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:55:51,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:55:51,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:55:51,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:55:51,056 INFO L87 Difference]: Start difference. First operand 181721 states and 313608 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:56:08,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:56:08,277 INFO L93 Difference]: Finished difference Result 658658 states and 1155858 transitions. [2023-12-20 14:56:08,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:56:08,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 172 [2023-12-20 14:56:08,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:56:10,636 INFO L225 Difference]: With dead ends: 658658 [2023-12-20 14:56:10,636 INFO L226 Difference]: Without dead ends: 476957 [2023-12-20 14:56:11,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:56:11,431 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1625 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 3899 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 2230 SdHoareTripleChecker+Invalid, 3968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:56:11,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 2230 Invalid, 3968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3899 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 14:56:11,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476957 states. [2023-12-20 14:56:27,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476957 to 364058. [2023-12-20 14:56:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364058 states, 334326 states have (on average 1.62289202754198) internal successors, (542575), 335352 states have internal predecessors, (542575), 22557 states have call successors, (22557), 6151 states have call predecessors, (22557), 7174 states have return successors, (82628), 23578 states have call predecessors, (82628), 22555 states have call successors, (82628) [2023-12-20 14:56:30,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364058 states to 364058 states and 647760 transitions. [2023-12-20 14:56:30,685 INFO L78 Accepts]: Start accepts. Automaton has 364058 states and 647760 transitions. Word has length 172 [2023-12-20 14:56:30,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:30,685 INFO L495 AbstractCegarLoop]: Abstraction has 364058 states and 647760 transitions. [2023-12-20 14:56:30,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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 14:56:30,686 INFO L276 IsEmpty]: Start isEmpty. Operand 364058 states and 647760 transitions. [2023-12-20 14:56:30,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 14:56:30,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:30,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:56:30,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:56:30,838 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:30,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:30,839 INFO L85 PathProgramCache]: Analyzing trace with hash -868959686, now seen corresponding path program 1 times [2023-12-20 14:56:30,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:30,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284956062] [2023-12-20 14:56:30,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:30,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:30,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:56:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:30,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-12-20 14:56:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:30,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 14:56:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:31,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 14:56:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:31,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 14:56:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:31,007 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 14:56:31,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:31,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284956062] [2023-12-20 14:56:31,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284956062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:31,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:31,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:56:31,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787806103] [2023-12-20 14:56:31,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:31,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:56:31,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:56:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:56:31,009 INFO L87 Difference]: Start difference. First operand 364058 states and 647760 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 5 states have internal predecessors, (161), 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)