/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_2.cil-1+token_ring.07.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:48:39,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:48:39,962 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 14:48:39,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:48:39,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:48:39,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:48:39,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:48:39,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:48:39,987 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:48:39,988 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:48:39,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:48:39,988 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:48:39,988 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:48:39,989 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:48:39,989 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:48:39,989 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:48:39,989 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:48:39,990 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:48:39,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:48:39,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:48:39,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:48:39,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:48:39,991 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:48:39,991 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:48:39,991 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:48:39,991 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:48:39,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:48:39,992 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:48:39,992 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:48:39,992 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:48:39,992 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:48:39,992 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:48:39,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:48:39,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:48:39,993 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:48:39,993 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:48:39,993 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:48:39,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:48:39,994 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:48:39,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:48:39,994 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:48:39,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:48:39,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:48:39,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:48:40,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:48:40,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:48:40,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:48:40,213 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:48:40,217 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:48:40,218 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2023-12-20 14:48:41,386 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:48:41,564 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:48:41,565 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2023-12-20 14:48:41,575 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79d3e34b2/216080bda52c4e66826e79523497269a/FLAG72e6b44fa [2023-12-20 14:48:41,588 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79d3e34b2/216080bda52c4e66826e79523497269a [2023-12-20 14:48:41,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:48:41,591 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:48:41,592 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:48:41,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:48:41,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:48:41,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:48:41" (1/1) ... [2023-12-20 14:48:41,600 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f0427f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:41, skipping insertion in model container [2023-12-20 14:48:41,601 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:48:41" (1/1) ... [2023-12-20 14:48:41,643 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:48:41,764 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_2.cil-1+token_ring.07.cil-2.c[914,927] [2023-12-20 14:48:41,819 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_2.cil-1+token_ring.07.cil-2.c[7115,7128] [2023-12-20 14:48:41,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:48:41,912 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:48:41,932 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_2.cil-1+token_ring.07.cil-2.c[914,927] [2023-12-20 14:48:41,960 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_2.cil-1+token_ring.07.cil-2.c[7115,7128] [2023-12-20 14:48:41,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:48:42,012 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:48:42,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:42 WrapperNode [2023-12-20 14:48:42,013 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:48:42,014 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:48:42,014 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:48:42,014 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:48:42,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:42" (1/1) ... [2023-12-20 14:48:42,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:42" (1/1) ... [2023-12-20 14:48:42,070 INFO L138 Inliner]: procedures = 67, calls = 79, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 774 [2023-12-20 14:48:42,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:48:42,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:48:42,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:48:42,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:48:42,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:42" (1/1) ... [2023-12-20 14:48:42,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:42" (1/1) ... [2023-12-20 14:48:42,091 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:42" (1/1) ... [2023-12-20 14:48:42,110 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 14:48:42,111 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:42" (1/1) ... [2023-12-20 14:48:42,111 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:42" (1/1) ... [2023-12-20 14:48:42,122 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:42" (1/1) ... [2023-12-20 14:48:42,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:42" (1/1) ... [2023-12-20 14:48:42,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:42" (1/1) ... [2023-12-20 14:48:42,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:42" (1/1) ... [2023-12-20 14:48:42,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:48:42,137 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:48:42,137 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:48:42,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:48:42,138 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:42" (1/1) ... [2023-12-20 14:48:42,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:48:42,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:48:42,216 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 14:48:42,220 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 14:48:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:48:42,248 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 14:48:42,248 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 14:48:42,250 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-20 14:48:42,250 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-20 14:48:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-20 14:48:42,251 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-20 14:48:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-20 14:48:42,251 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-20 14:48:42,251 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-20 14:48:42,251 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-20 14:48:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-20 14:48:42,252 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-20 14:48:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-20 14:48:42,252 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-20 14:48:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-20 14:48:42,252 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-20 14:48:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-20 14:48:42,252 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-20 14:48:42,252 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-20 14:48:42,252 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-20 14:48:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-20 14:48:42,253 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-20 14:48:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:48:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-20 14:48:42,254 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-20 14:48:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-20 14:48:42,255 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-20 14:48:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:48:42,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:48:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-20 14:48:42,255 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-20 14:48:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-20 14:48:42,256 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-20 14:48:42,366 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:48:42,368 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:48:42,973 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:48:43,045 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:48:43,045 INFO L309 CfgBuilder]: Removed 14 assume(true) statements. [2023-12-20 14:48:43,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:48:43 BoogieIcfgContainer [2023-12-20 14:48:43,046 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:48:43,049 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:48:43,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:48:43,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:48:43,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:48:41" (1/3) ... [2023-12-20 14:48:43,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acb63f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:48:43, skipping insertion in model container [2023-12-20 14:48:43,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:48:42" (2/3) ... [2023-12-20 14:48:43,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acb63f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:48:43, skipping insertion in model container [2023-12-20 14:48:43,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:48:43" (3/3) ... [2023-12-20 14:48:43,057 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2023-12-20 14:48:43,074 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:48:43,074 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:48:43,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:48:43,138 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;@12d17fbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:48:43,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:48:43,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 332 states, 277 states have (on average 1.6967509025270757) internal successors, (470), 285 states have internal predecessors, (470), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-20 14:48:43,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:48:43,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:43,174 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 14:48:43,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:43,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:43,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2104233725, now seen corresponding path program 1 times [2023-12-20 14:48:43,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:43,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998725069] [2023-12-20 14:48:43,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:43,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:43,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:43,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:43,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:43,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:43,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:43,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:43,555 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 14:48:43,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:43,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998725069] [2023-12-20 14:48:43,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998725069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:43,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:43,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:48:43,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623434787] [2023-12-20 14:48:43,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:43,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:48:43,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:43,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:48:43,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:48:43,594 INFO L87 Difference]: Start difference. First operand has 332 states, 277 states have (on average 1.6967509025270757) internal successors, (470), 285 states have internal predecessors, (470), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 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 14:48:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:44,400 INFO L93 Difference]: Finished difference Result 662 states and 1082 transitions. [2023-12-20 14:48:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:48:44,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 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 58 [2023-12-20 14:48:44,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:44,414 INFO L225 Difference]: With dead ends: 662 [2023-12-20 14:48:44,414 INFO L226 Difference]: Without dead ends: 343 [2023-12-20 14:48:44,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:48:44,422 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 526 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:44,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1054 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:48:44,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-12-20 14:48:44,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 326. [2023-12-20 14:48:44,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 274 states have (on average 1.583941605839416) internal successors, (434), 279 states have internal predecessors, (434), 37 states have call successors, (37), 15 states have call predecessors, (37), 13 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-20 14:48:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 504 transitions. [2023-12-20 14:48:44,514 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 504 transitions. Word has length 58 [2023-12-20 14:48:44,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:44,515 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 504 transitions. [2023-12-20 14:48:44,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 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 14:48:44,516 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 504 transitions. [2023-12-20 14:48:44,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:48:44,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:44,527 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 14:48:44,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:48:44,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:44,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:44,529 INFO L85 PathProgramCache]: Analyzing trace with hash -162147461, now seen corresponding path program 1 times [2023-12-20 14:48:44,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:44,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312382947] [2023-12-20 14:48:44,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:44,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:44,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:44,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:44,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:44,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:44,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:44,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:44,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:44,888 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 14:48:44,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:44,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312382947] [2023-12-20 14:48:44,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312382947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:44,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:44,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:48:44,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539999057] [2023-12-20 14:48:44,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:44,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:48:44,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:44,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:48:44,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:48:44,891 INFO L87 Difference]: Start difference. First operand 326 states and 504 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 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 14:48:45,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:45,759 INFO L93 Difference]: Finished difference Result 532 states and 801 transitions. [2023-12-20 14:48:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:48:45,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 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 58 [2023-12-20 14:48:45,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:45,764 INFO L225 Difference]: With dead ends: 532 [2023-12-20 14:48:45,764 INFO L226 Difference]: Without dead ends: 451 [2023-12-20 14:48:45,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:48:45,766 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 843 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:45,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1108 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:48:45,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2023-12-20 14:48:45,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 414. [2023-12-20 14:48:45,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 342 states have (on average 1.5497076023391814) internal successors, (530), 349 states have internal predecessors, (530), 48 states have call successors, (48), 22 states have call predecessors, (48), 22 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2023-12-20 14:48:45,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 627 transitions. [2023-12-20 14:48:45,790 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 627 transitions. Word has length 58 [2023-12-20 14:48:45,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:45,790 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 627 transitions. [2023-12-20 14:48:45,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 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 14:48:45,791 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 627 transitions. [2023-12-20 14:48:45,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:48:45,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:45,792 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 14:48:45,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:48:45,792 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:45,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash -296381125, now seen corresponding path program 1 times [2023-12-20 14:48:45,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:45,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926676689] [2023-12-20 14:48:45,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:45,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:45,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:45,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:45,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:45,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:45,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:45,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:45,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:45,985 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 14:48:45,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:45,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926676689] [2023-12-20 14:48:45,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926676689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:45,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:45,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:48:45,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074652416] [2023-12-20 14:48:45,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:45,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:48:45,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:45,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:48:45,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:48:45,991 INFO L87 Difference]: Start difference. First operand 414 states and 627 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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 14:48:47,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:47,020 INFO L93 Difference]: Finished difference Result 734 states and 1076 transitions. [2023-12-20 14:48:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 14:48:47,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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 58 [2023-12-20 14:48:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:47,026 INFO L225 Difference]: With dead ends: 734 [2023-12-20 14:48:47,026 INFO L226 Difference]: Without dead ends: 572 [2023-12-20 14:48:47,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-20 14:48:47,030 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 976 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:47,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1549 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:48:47,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2023-12-20 14:48:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 502. [2023-12-20 14:48:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 410 states have (on average 1.524390243902439) internal successors, (625), 419 states have internal predecessors, (625), 59 states have call successors, (59), 29 states have call predecessors, (59), 31 states have return successors, (68), 57 states have call predecessors, (68), 55 states have call successors, (68) [2023-12-20 14:48:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 752 transitions. [2023-12-20 14:48:47,096 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 752 transitions. Word has length 58 [2023-12-20 14:48:47,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:47,096 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 752 transitions. [2023-12-20 14:48:47,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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 14:48:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 752 transitions. [2023-12-20 14:48:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:48:47,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:47,100 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 14:48:47,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:48:47,100 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:47,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:47,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1631891577, now seen corresponding path program 1 times [2023-12-20 14:48:47,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:47,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635235274] [2023-12-20 14:48:47,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:47,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:47,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:47,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:47,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:47,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:47,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:47,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:47,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:47,247 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 14:48:47,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:47,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635235274] [2023-12-20 14:48:47,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635235274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:47,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:47,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:48:47,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367938682] [2023-12-20 14:48:47,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:47,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:48:47,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:47,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:48:47,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:48:47,252 INFO L87 Difference]: Start difference. First operand 502 states and 752 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 14:48:48,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:48,093 INFO L93 Difference]: Finished difference Result 802 states and 1179 transitions. [2023-12-20 14:48:48,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 14:48:48,094 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 14:48:48,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:48,097 INFO L225 Difference]: With dead ends: 802 [2023-12-20 14:48:48,098 INFO L226 Difference]: Without dead ends: 558 [2023-12-20 14:48:48,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:48:48,099 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 429 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:48,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1816 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:48:48,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-12-20 14:48:48,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 514. [2023-12-20 14:48:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 419 states have (on average 1.5131264916467781) internal successors, (634), 428 states have internal predecessors, (634), 59 states have call successors, (59), 29 states have call predecessors, (59), 34 states have return successors, (71), 60 states have call predecessors, (71), 55 states have call successors, (71) [2023-12-20 14:48:48,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 764 transitions. [2023-12-20 14:48:48,134 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 764 transitions. Word has length 58 [2023-12-20 14:48:48,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:48,134 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 764 transitions. [2023-12-20 14:48:48,135 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 14:48:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 764 transitions. [2023-12-20 14:48:48,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:48:48,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:48,136 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 14:48:48,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:48:48,137 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:48,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:48,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1569851963, now seen corresponding path program 1 times [2023-12-20 14:48:48,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:48,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812492511] [2023-12-20 14:48:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:48,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:48,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:48,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:48,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:48,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:48,259 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 14:48:48,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:48,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812492511] [2023-12-20 14:48:48,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812492511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:48,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:48,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:48:48,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999847920] [2023-12-20 14:48:48,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:48,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:48:48,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:48,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:48:48,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:48:48,261 INFO L87 Difference]: Start difference. First operand 514 states and 764 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 14:48:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:49,016 INFO L93 Difference]: Finished difference Result 804 states and 1168 transitions. [2023-12-20 14:48:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:48:49,017 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 14:48:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:49,019 INFO L225 Difference]: With dead ends: 804 [2023-12-20 14:48:49,019 INFO L226 Difference]: Without dead ends: 548 [2023-12-20 14:48:49,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:48:49,020 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 429 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:49,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1816 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1580 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:48:49,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-12-20 14:48:49,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 518. [2023-12-20 14:48:49,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 422 states have (on average 1.504739336492891) internal successors, (635), 431 states have internal predecessors, (635), 59 states have call successors, (59), 29 states have call predecessors, (59), 35 states have return successors, (72), 61 states have call predecessors, (72), 55 states have call successors, (72) [2023-12-20 14:48:49,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 766 transitions. [2023-12-20 14:48:49,041 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 766 transitions. Word has length 58 [2023-12-20 14:48:49,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:49,041 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 766 transitions. [2023-12-20 14:48:49,041 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 14:48:49,041 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 766 transitions. [2023-12-20 14:48:49,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:48:49,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:49,042 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 14:48:49,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:48:49,043 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:49,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:49,043 INFO L85 PathProgramCache]: Analyzing trace with hash -674131335, now seen corresponding path program 1 times [2023-12-20 14:48:49,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:49,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724083760] [2023-12-20 14:48:49,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:49,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:49,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:49,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:49,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:49,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:49,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:49,137 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 14:48:49,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:49,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724083760] [2023-12-20 14:48:49,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724083760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:49,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:49,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 14:48:49,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160921167] [2023-12-20 14:48:49,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:49,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:48:49,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:49,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:48:49,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:48:49,139 INFO L87 Difference]: Start difference. First operand 518 states and 766 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 14:48:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:50,414 INFO L93 Difference]: Finished difference Result 1770 states and 2503 transitions. [2023-12-20 14:48:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 14:48:50,414 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 14:48:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:50,419 INFO L225 Difference]: With dead ends: 1770 [2023-12-20 14:48:50,420 INFO L226 Difference]: Without dead ends: 1492 [2023-12-20 14:48:50,421 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 14:48:50,422 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 2628 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2643 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:50,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2643 Valid, 1781 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 14:48:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2023-12-20 14:48:50,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1365. [2023-12-20 14:48:50,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1080 states have (on average 1.4064814814814814) internal successors, (1519), 1104 states have internal predecessors, (1519), 147 states have call successors, (147), 112 states have call predecessors, (147), 136 states have return successors, (189), 151 states have call predecessors, (189), 143 states have call successors, (189) [2023-12-20 14:48:50,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1855 transitions. [2023-12-20 14:48:50,482 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1855 transitions. Word has length 58 [2023-12-20 14:48:50,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:50,483 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1855 transitions. [2023-12-20 14:48:50,483 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 14:48:50,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1855 transitions. [2023-12-20 14:48:50,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 14:48:50,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:50,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:48:50,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:48:50,484 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:50,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:50,484 INFO L85 PathProgramCache]: Analyzing trace with hash -216401402, now seen corresponding path program 1 times [2023-12-20 14:48:50,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:50,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042930140] [2023-12-20 14:48:50,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:50,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:50,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:50,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:50,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:50,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:50,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:50,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:50,644 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 14:48:50,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:50,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042930140] [2023-12-20 14:48:50,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042930140] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:50,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:50,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:48:50,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074969291] [2023-12-20 14:48:50,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:50,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:48:50,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:50,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:48:50,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:48:50,646 INFO L87 Difference]: Start difference. First operand 1365 states and 1855 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 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 14:48:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:51,524 INFO L93 Difference]: Finished difference Result 2539 states and 3336 transitions. [2023-12-20 14:48:51,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 14:48:51,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 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 59 [2023-12-20 14:48:51,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:51,531 INFO L225 Difference]: With dead ends: 2539 [2023-12-20 14:48:51,531 INFO L226 Difference]: Without dead ends: 1627 [2023-12-20 14:48:51,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-20 14:48:51,534 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1219 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:51,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 1110 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:48:51,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2023-12-20 14:48:51,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1310. [2023-12-20 14:48:51,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1041 states have (on average 1.4024975984630164) internal successors, (1460), 1060 states have internal predecessors, (1460), 141 states have call successors, (141), 107 states have call predecessors, (141), 126 states have return successors, (174), 144 states have call predecessors, (174), 137 states have call successors, (174) [2023-12-20 14:48:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1775 transitions. [2023-12-20 14:48:51,597 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1775 transitions. Word has length 59 [2023-12-20 14:48:51,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:51,597 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 1775 transitions. [2023-12-20 14:48:51,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 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 14:48:51,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1775 transitions. [2023-12-20 14:48:51,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 14:48:51,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:51,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:48:51,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:48:51,598 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:51,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:51,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2453316, now seen corresponding path program 1 times [2023-12-20 14:48:51,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:51,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628708837] [2023-12-20 14:48:51,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:51,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:51,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:51,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:51,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:51,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:51,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:51,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:51,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:51,744 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 14:48:51,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:51,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628708837] [2023-12-20 14:48:51,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628708837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:51,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:51,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:48:51,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377571634] [2023-12-20 14:48:51,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:51,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:48:51,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:51,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:48:51,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:48:51,746 INFO L87 Difference]: Start difference. First operand 1310 states and 1775 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 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 14:48:52,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:52,360 INFO L93 Difference]: Finished difference Result 3482 states and 4582 transitions. [2023-12-20 14:48:52,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 14:48:52,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 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 59 [2023-12-20 14:48:52,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:52,370 INFO L225 Difference]: With dead ends: 3482 [2023-12-20 14:48:52,370 INFO L226 Difference]: Without dead ends: 2419 [2023-12-20 14:48:52,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:48:52,375 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 959 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:52,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1082 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:48:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2023-12-20 14:48:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 2275. [2023-12-20 14:48:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 1766 states have (on average 1.339184597961495) internal successors, (2365), 1801 states have internal predecessors, (2365), 257 states have call successors, (257), 206 states have call predecessors, (257), 250 states have return successors, (362), 269 states have call predecessors, (362), 253 states have call successors, (362) [2023-12-20 14:48:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 2984 transitions. [2023-12-20 14:48:52,545 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 2984 transitions. Word has length 59 [2023-12-20 14:48:52,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:52,546 INFO L495 AbstractCegarLoop]: Abstraction has 2275 states and 2984 transitions. [2023-12-20 14:48:52,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 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 14:48:52,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 2984 transitions. [2023-12-20 14:48:52,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:48:52,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:52,547 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] [2023-12-20 14:48:52,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:48:52,548 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:52,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:52,548 INFO L85 PathProgramCache]: Analyzing trace with hash 758916333, now seen corresponding path program 1 times [2023-12-20 14:48:52,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:52,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246316332] [2023-12-20 14:48:52,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:52,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:52,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:52,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:52,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:52,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:52,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:52,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:52,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:52,612 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 14:48:52,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:52,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246316332] [2023-12-20 14:48:52,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246316332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:52,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:52,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:48:52,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711401897] [2023-12-20 14:48:52,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:52,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:48:52,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:52,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:48:52,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:48:52,615 INFO L87 Difference]: Start difference. First operand 2275 states and 2984 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:48:53,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:53,259 INFO L93 Difference]: Finished difference Result 5296 states and 6846 transitions. [2023-12-20 14:48:53,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:48:53,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2023-12-20 14:48:53,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:53,272 INFO L225 Difference]: With dead ends: 5296 [2023-12-20 14:48:53,272 INFO L226 Difference]: Without dead ends: 3268 [2023-12-20 14:48:53,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:48:53,279 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 591 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:53,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 1086 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:48:53,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2023-12-20 14:48:53,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 2982. [2023-12-20 14:48:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2302 states have (on average 1.322328410078193) internal successors, (3044), 2342 states have internal predecessors, (3044), 341 states have call successors, (341), 279 states have call predecessors, (341), 337 states have return successors, (466), 362 states have call predecessors, (466), 337 states have call successors, (466) [2023-12-20 14:48:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 3851 transitions. [2023-12-20 14:48:53,462 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 3851 transitions. Word has length 60 [2023-12-20 14:48:53,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:53,462 INFO L495 AbstractCegarLoop]: Abstraction has 2982 states and 3851 transitions. [2023-12-20 14:48:53,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:48:53,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 3851 transitions. [2023-12-20 14:48:53,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:48:53,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:53,463 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] [2023-12-20 14:48:53,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:48:53,463 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:53,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:53,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1186493772, now seen corresponding path program 1 times [2023-12-20 14:48:53,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:53,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615566674] [2023-12-20 14:48:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:53,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:53,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:53,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:53,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:53,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:53,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:53,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:53,518 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 14:48:53,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:53,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615566674] [2023-12-20 14:48:53,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615566674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:53,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:53,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:48:53,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501869606] [2023-12-20 14:48:53,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:53,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:48:53,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:53,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:48:53,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:48:53,519 INFO L87 Difference]: Start difference. First operand 2982 states and 3851 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:48:54,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:54,166 INFO L93 Difference]: Finished difference Result 6248 states and 7946 transitions. [2023-12-20 14:48:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:48:54,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-12-20 14:48:54,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:54,179 INFO L225 Difference]: With dead ends: 6248 [2023-12-20 14:48:54,179 INFO L226 Difference]: Without dead ends: 3512 [2023-12-20 14:48:54,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:48:54,184 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 920 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:54,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 945 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:48:54,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2023-12-20 14:48:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 3235. [2023-12-20 14:48:54,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3235 states, 2498 states have (on average 1.3142514011208968) internal successors, (3283), 2540 states have internal predecessors, (3283), 369 states have call successors, (369), 304 states have call predecessors, (369), 366 states have return successors, (498), 392 states have call predecessors, (498), 365 states have call successors, (498) [2023-12-20 14:48:54,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 4150 transitions. [2023-12-20 14:48:54,334 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 4150 transitions. Word has length 66 [2023-12-20 14:48:54,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:54,334 INFO L495 AbstractCegarLoop]: Abstraction has 3235 states and 4150 transitions. [2023-12-20 14:48:54,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:48:54,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 4150 transitions. [2023-12-20 14:48:54,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 14:48:54,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:54,335 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2023-12-20 14:48:54,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:48:54,336 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:54,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1904970210, now seen corresponding path program 1 times [2023-12-20 14:48:54,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:54,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594534172] [2023-12-20 14:48:54,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:54,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:54,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:54,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:54,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:54,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:54,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:54,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:54,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:48:54,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:54,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594534172] [2023-12-20 14:48:54,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594534172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:54,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:54,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:48:54,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234903883] [2023-12-20 14:48:54,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:54,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:48:54,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:54,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:48:54,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:48:54,411 INFO L87 Difference]: Start difference. First operand 3235 states and 4150 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 14:48:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:55,168 INFO L93 Difference]: Finished difference Result 4256 states and 5383 transitions. [2023-12-20 14:48:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:48:55,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2023-12-20 14:48:55,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:55,185 INFO L225 Difference]: With dead ends: 4256 [2023-12-20 14:48:55,185 INFO L226 Difference]: Without dead ends: 4253 [2023-12-20 14:48:55,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:48:55,187 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1393 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:55,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 922 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:48:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2023-12-20 14:48:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 3655. [2023-12-20 14:48:55,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2811 states have (on average 1.3020277481323372) internal successors, (3660), 2856 states have internal predecessors, (3660), 419 states have call successors, (419), 348 states have call predecessors, (419), 423 states have return successors, (575), 452 states have call predecessors, (575), 416 states have call successors, (575) [2023-12-20 14:48:55,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 4654 transitions. [2023-12-20 14:48:55,416 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 4654 transitions. Word has length 67 [2023-12-20 14:48:55,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:55,416 INFO L495 AbstractCegarLoop]: Abstraction has 3655 states and 4654 transitions. [2023-12-20 14:48:55,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 14:48:55,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 4654 transitions. [2023-12-20 14:48:55,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 14:48:55,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:55,418 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-12-20 14:48:55,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:48:55,418 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:55,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:55,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1076567978, now seen corresponding path program 1 times [2023-12-20 14:48:55,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:55,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877336161] [2023-12-20 14:48:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:55,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:55,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:55,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:55,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:55,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:55,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:55,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:55,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:48:55,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:55,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877336161] [2023-12-20 14:48:55,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877336161] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:48:55,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205301769] [2023-12-20 14:48:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:55,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:48:55,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:48:55,546 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 14:48:55,572 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 14:48:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:55,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 14:48:55,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:48:55,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:48:55,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:48:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:48:55,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205301769] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:48:55,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:48:55,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-12-20 14:48:55,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330885835] [2023-12-20 14:48:55,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:48:55,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:48:55,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:55,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:48:55,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:48:55,895 INFO L87 Difference]: Start difference. First operand 3655 states and 4654 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-20 14:48:57,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:57,407 INFO L93 Difference]: Finished difference Result 7655 states and 9560 transitions. [2023-12-20 14:48:57,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-20 14:48:57,408 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 68 [2023-12-20 14:48:57,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:57,433 INFO L225 Difference]: With dead ends: 7655 [2023-12-20 14:48:57,433 INFO L226 Difference]: Without dead ends: 7652 [2023-12-20 14:48:57,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:48:57,437 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 2004 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:57,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2063 Valid, 1585 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:48:57,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7652 states. [2023-12-20 14:48:57,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7652 to 6772. [2023-12-20 14:48:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6772 states, 5186 states have (on average 1.2830698033166217) internal successors, (6654), 5266 states have internal predecessors, (6654), 778 states have call successors, (778), 662 states have call predecessors, (778), 806 states have return successors, (1076), 845 states have call predecessors, (1076), 775 states have call successors, (1076) [2023-12-20 14:48:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6772 states to 6772 states and 8508 transitions. [2023-12-20 14:48:57,808 INFO L78 Accepts]: Start accepts. Automaton has 6772 states and 8508 transitions. Word has length 68 [2023-12-20 14:48:57,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:57,809 INFO L495 AbstractCegarLoop]: Abstraction has 6772 states and 8508 transitions. [2023-12-20 14:48:57,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-20 14:48:57,809 INFO L276 IsEmpty]: Start isEmpty. Operand 6772 states and 8508 transitions. [2023-12-20 14:48:57,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 14:48:57,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:57,810 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1] [2023-12-20 14:48:57,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 14:48:58,020 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,SelfDestructingSolverStorable11 [2023-12-20 14:48:58,021 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:58,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:58,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1486209378, now seen corresponding path program 2 times [2023-12-20 14:48:58,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:58,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705803499] [2023-12-20 14:48:58,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:58,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:48:58,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:58,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705803499] [2023-12-20 14:48:58,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705803499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:58,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:58,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:48:58,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784951013] [2023-12-20 14:48:58,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:58,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:48:58,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:58,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:48:58,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:48:58,081 INFO L87 Difference]: Start difference. First operand 6772 states and 8508 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 14:48:58,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:58,716 INFO L93 Difference]: Finished difference Result 9167 states and 11524 transitions. [2023-12-20 14:48:58,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:48:58,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2023-12-20 14:48:58,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:58,728 INFO L225 Difference]: With dead ends: 9167 [2023-12-20 14:48:58,728 INFO L226 Difference]: Without dead ends: 3529 [2023-12-20 14:48:58,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:48:58,737 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1094 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:58,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 764 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:48:58,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2023-12-20 14:48:58,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 2606. [2023-12-20 14:48:58,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 2024 states have (on average 1.290513833992095) internal successors, (2612), 2050 states have internal predecessors, (2612), 298 states have call successors, (298), 245 states have call predecessors, (298), 282 states have return successors, (377), 312 states have call predecessors, (377), 295 states have call successors, (377) [2023-12-20 14:48:58,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3287 transitions. [2023-12-20 14:48:58,875 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3287 transitions. Word has length 71 [2023-12-20 14:48:58,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:58,875 INFO L495 AbstractCegarLoop]: Abstraction has 2606 states and 3287 transitions. [2023-12-20 14:48:58,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 14:48:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3287 transitions. [2023-12-20 14:48:58,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 14:48:58,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:58,876 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] [2023-12-20 14:48:58,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:48:58,876 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:58,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:58,877 INFO L85 PathProgramCache]: Analyzing trace with hash -785495608, now seen corresponding path program 1 times [2023-12-20 14:48:58,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:58,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658677571] [2023-12-20 14:48:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:58,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:48:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:58,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:48:58,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:58,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658677571] [2023-12-20 14:48:58,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658677571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:58,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:58,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:48:58,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069826314] [2023-12-20 14:48:58,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:58,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:48:58,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:58,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:48:58,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:48:58,957 INFO L87 Difference]: Start difference. First operand 2606 states and 3287 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:48:59,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:59,995 INFO L93 Difference]: Finished difference Result 7387 states and 9173 transitions. [2023-12-20 14:48:59,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 14:48:59,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2023-12-20 14:48:59,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:00,024 INFO L225 Difference]: With dead ends: 7387 [2023-12-20 14:49:00,024 INFO L226 Difference]: Without dead ends: 5028 [2023-12-20 14:49:00,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-12-20 14:49:00,031 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1153 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:00,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1166 Valid, 1179 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:49:00,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2023-12-20 14:49:00,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4721. [2023-12-20 14:49:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4721 states, 3573 states have (on average 1.2504897844948222) internal successors, (4468), 3673 states have internal predecessors, (4468), 565 states have call successors, (565), 473 states have call predecessors, (565), 581 states have return successors, (822), 577 states have call predecessors, (822), 562 states have call successors, (822) [2023-12-20 14:49:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 5855 transitions. [2023-12-20 14:49:00,323 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 5855 transitions. Word has length 76 [2023-12-20 14:49:00,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:00,324 INFO L495 AbstractCegarLoop]: Abstraction has 4721 states and 5855 transitions. [2023-12-20 14:49:00,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:49:00,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 5855 transitions. [2023-12-20 14:49:00,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:49:00,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:00,326 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-20 14:49:00,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:49:00,327 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:00,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:00,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1115085919, now seen corresponding path program 1 times [2023-12-20 14:49:00,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:00,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070749349] [2023-12-20 14:49:00,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:00,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:00,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:00,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:00,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:00,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:00,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:00,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:00,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:00,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 14:49:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:49:00,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:00,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070749349] [2023-12-20 14:49:00,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070749349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:00,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:00,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:49:00,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192715588] [2023-12-20 14:49:00,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:00,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:49:00,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:00,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:49:00,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:49:00,421 INFO L87 Difference]: Start difference. First operand 4721 states and 5855 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 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 14:49:01,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:01,479 INFO L93 Difference]: Finished difference Result 7388 states and 9140 transitions. [2023-12-20 14:49:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 14:49:01,479 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 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 86 [2023-12-20 14:49:01,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:01,486 INFO L225 Difference]: With dead ends: 7388 [2023-12-20 14:49:01,486 INFO L226 Difference]: Without dead ends: 3454 [2023-12-20 14:49:01,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-12-20 14:49:01,492 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 1766 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:01,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1800 Valid, 1172 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:49:01,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2023-12-20 14:49:01,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 3100. [2023-12-20 14:49:01,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 2347 states have (on average 1.243715381337878) internal successors, (2919), 2418 states have internal predecessors, (2919), 367 states have call successors, (367), 300 states have call predecessors, (367), 384 states have return successors, (507), 384 states have call predecessors, (507), 364 states have call successors, (507) [2023-12-20 14:49:01,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 3793 transitions. [2023-12-20 14:49:01,652 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 3793 transitions. Word has length 86 [2023-12-20 14:49:01,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:01,652 INFO L495 AbstractCegarLoop]: Abstraction has 3100 states and 3793 transitions. [2023-12-20 14:49:01,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 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 14:49:01,652 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 3793 transitions. [2023-12-20 14:49:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:01,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:01,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:01,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:49:01,654 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:01,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:01,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1740292059, now seen corresponding path program 1 times [2023-12-20 14:49:01,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:01,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822813178] [2023-12-20 14:49:01,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:01,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:01,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:01,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:01,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:01,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:01,762 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 14:49:01,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:01,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822813178] [2023-12-20 14:49:01,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822813178] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:01,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:01,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:01,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151467160] [2023-12-20 14:49:01,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:01,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:01,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:01,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:01,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:01,764 INFO L87 Difference]: Start difference. First operand 3100 states and 3793 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:03,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:03,487 INFO L93 Difference]: Finished difference Result 3447 states and 4373 transitions. [2023-12-20 14:49:03,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:49:03,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:03,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:03,495 INFO L225 Difference]: With dead ends: 3447 [2023-12-20 14:49:03,495 INFO L226 Difference]: Without dead ends: 3216 [2023-12-20 14:49:03,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:49:03,497 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 872 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:03,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1120 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:49:03,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2023-12-20 14:49:03,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 3102. [2023-12-20 14:49:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3102 states, 2349 states have (on average 1.2430821626223925) internal successors, (2920), 2420 states have internal predecessors, (2920), 367 states have call successors, (367), 300 states have call predecessors, (367), 384 states have return successors, (507), 384 states have call predecessors, (507), 364 states have call successors, (507) [2023-12-20 14:49:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 3794 transitions. [2023-12-20 14:49:03,826 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 3794 transitions. Word has length 112 [2023-12-20 14:49:03,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:03,826 INFO L495 AbstractCegarLoop]: Abstraction has 3102 states and 3794 transitions. [2023-12-20 14:49:03,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 3794 transitions. [2023-12-20 14:49:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:03,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:03,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:03,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:49:03,829 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:03,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:03,829 INFO L85 PathProgramCache]: Analyzing trace with hash -124294619, now seen corresponding path program 1 times [2023-12-20 14:49:03,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:03,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381450643] [2023-12-20 14:49:03,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:03,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:03,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:03,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:03,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:03,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:03,963 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 14:49:03,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:03,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381450643] [2023-12-20 14:49:03,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381450643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:03,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:03,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:49:03,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560379180] [2023-12-20 14:49:03,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:03,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:49:03,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:03,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:49:03,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:49:03,965 INFO L87 Difference]: Start difference. First operand 3102 states and 3794 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:05,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:05,793 INFO L93 Difference]: Finished difference Result 3729 states and 4822 transitions. [2023-12-20 14:49:05,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:49:05,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:05,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:05,801 INFO L225 Difference]: With dead ends: 3729 [2023-12-20 14:49:05,801 INFO L226 Difference]: Without dead ends: 3502 [2023-12-20 14:49:05,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:49:05,805 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 1154 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:05,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 1031 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 14:49:05,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2023-12-20 14:49:06,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 3337. [2023-12-20 14:49:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3337 states, 2561 states have (on average 1.274892620070285) internal successors, (3265), 2633 states have internal predecessors, (3265), 383 states have call successors, (383), 306 states have call predecessors, (383), 391 states have return successors, (526), 400 states have call predecessors, (526), 380 states have call successors, (526) [2023-12-20 14:49:06,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3337 states to 3337 states and 4174 transitions. [2023-12-20 14:49:06,084 INFO L78 Accepts]: Start accepts. Automaton has 3337 states and 4174 transitions. Word has length 112 [2023-12-20 14:49:06,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:06,084 INFO L495 AbstractCegarLoop]: Abstraction has 3337 states and 4174 transitions. [2023-12-20 14:49:06,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:06,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3337 states and 4174 transitions. [2023-12-20 14:49:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:06,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:06,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:06,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:49:06,089 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:06,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:06,090 INFO L85 PathProgramCache]: Analyzing trace with hash 869958177, now seen corresponding path program 1 times [2023-12-20 14:49:06,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:06,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359330305] [2023-12-20 14:49:06,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:06,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:06,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:06,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:06,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:06,224 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 14:49:06,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:06,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359330305] [2023-12-20 14:49:06,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359330305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:06,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:06,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23593666] [2023-12-20 14:49:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:06,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:06,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:06,227 INFO L87 Difference]: Start difference. First operand 3337 states and 4174 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:08,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:08,363 INFO L93 Difference]: Finished difference Result 4290 states and 5734 transitions. [2023-12-20 14:49:08,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:49:08,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:08,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:08,374 INFO L225 Difference]: With dead ends: 4290 [2023-12-20 14:49:08,374 INFO L226 Difference]: Without dead ends: 3828 [2023-12-20 14:49:08,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:49:08,378 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 1228 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:08,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 1221 Invalid, 2433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 14:49:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3828 states. [2023-12-20 14:49:08,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3828 to 3555. [2023-12-20 14:49:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3555 states, 2756 states have (on average 1.297532656023222) internal successors, (3576), 2829 states have internal predecessors, (3576), 399 states have call successors, (399), 312 states have call predecessors, (399), 398 states have return successors, (544), 417 states have call predecessors, (544), 396 states have call successors, (544) [2023-12-20 14:49:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3555 states to 3555 states and 4519 transitions. [2023-12-20 14:49:08,676 INFO L78 Accepts]: Start accepts. Automaton has 3555 states and 4519 transitions. Word has length 112 [2023-12-20 14:49:08,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:08,676 INFO L495 AbstractCegarLoop]: Abstraction has 3555 states and 4519 transitions. [2023-12-20 14:49:08,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:08,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3555 states and 4519 transitions. [2023-12-20 14:49:08,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:08,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:08,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:08,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:49:08,679 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:08,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:08,679 INFO L85 PathProgramCache]: Analyzing trace with hash -2073623901, now seen corresponding path program 1 times [2023-12-20 14:49:08,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:08,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975512629] [2023-12-20 14:49:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:08,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:08,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:08,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:08,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:08,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:08,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:08,817 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 14:49:08,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:08,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975512629] [2023-12-20 14:49:08,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975512629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:08,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:08,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:08,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054230037] [2023-12-20 14:49:08,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:08,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:08,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:08,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:08,820 INFO L87 Difference]: Start difference. First operand 3555 states and 4519 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:10,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:10,902 INFO L93 Difference]: Finished difference Result 5113 states and 7065 transitions. [2023-12-20 14:49:10,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:49:10,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:10,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:10,914 INFO L225 Difference]: With dead ends: 5113 [2023-12-20 14:49:10,914 INFO L226 Difference]: Without dead ends: 4433 [2023-12-20 14:49:10,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:49:10,918 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1173 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:10,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 1655 Invalid, 2697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2606 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 14:49:10,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2023-12-20 14:49:11,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 3992. [2023-12-20 14:49:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3147 states have (on average 1.3342866221798537) internal successors, (4199), 3222 states have internal predecessors, (4199), 431 states have call successors, (431), 324 states have call predecessors, (431), 412 states have return successors, (584), 451 states have call predecessors, (584), 428 states have call successors, (584) [2023-12-20 14:49:11,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 5214 transitions. [2023-12-20 14:49:11,420 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 5214 transitions. Word has length 112 [2023-12-20 14:49:11,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:11,422 INFO L495 AbstractCegarLoop]: Abstraction has 3992 states and 5214 transitions. [2023-12-20 14:49:11,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:11,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 5214 transitions. [2023-12-20 14:49:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:11,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:11,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:11,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:49:11,426 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:11,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:11,426 INFO L85 PathProgramCache]: Analyzing trace with hash 602368481, now seen corresponding path program 1 times [2023-12-20 14:49:11,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:11,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259473597] [2023-12-20 14:49:11,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:11,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:11,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:11,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:11,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:11,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:11,566 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 14:49:11,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:11,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259473597] [2023-12-20 14:49:11,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259473597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:11,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:11,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:11,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099788191] [2023-12-20 14:49:11,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:11,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:11,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:11,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:11,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:11,568 INFO L87 Difference]: Start difference. First operand 3992 states and 5214 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:13,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:13,067 INFO L93 Difference]: Finished difference Result 5538 states and 7751 transitions. [2023-12-20 14:49:13,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:49:13,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:13,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:13,075 INFO L225 Difference]: With dead ends: 5538 [2023-12-20 14:49:13,075 INFO L226 Difference]: Without dead ends: 4421 [2023-12-20 14:49:13,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:49:13,079 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 915 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:13,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 951 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:49:13,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2023-12-20 14:49:13,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3992. [2023-12-20 14:49:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3147 states have (on average 1.332697807435653) internal successors, (4194), 3222 states have internal predecessors, (4194), 431 states have call successors, (431), 324 states have call predecessors, (431), 412 states have return successors, (584), 451 states have call predecessors, (584), 428 states have call successors, (584) [2023-12-20 14:49:13,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 5209 transitions. [2023-12-20 14:49:13,386 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 5209 transitions. Word has length 112 [2023-12-20 14:49:13,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:13,386 INFO L495 AbstractCegarLoop]: Abstraction has 3992 states and 5209 transitions. [2023-12-20 14:49:13,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:13,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 5209 transitions. [2023-12-20 14:49:13,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:13,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:13,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:13,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:49:13,389 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:13,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:13,389 INFO L85 PathProgramCache]: Analyzing trace with hash -281140509, now seen corresponding path program 1 times [2023-12-20 14:49:13,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:13,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300431823] [2023-12-20 14:49:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:13,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:13,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:13,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:13,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:13,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:13,504 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 14:49:13,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:13,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300431823] [2023-12-20 14:49:13,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300431823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:13,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:13,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:13,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115844989] [2023-12-20 14:49:13,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:13,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:13,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:13,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:13,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:13,507 INFO L87 Difference]: Start difference. First operand 3992 states and 5209 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:14,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:14,849 INFO L93 Difference]: Finished difference Result 5527 states and 7715 transitions. [2023-12-20 14:49:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:49:14,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:14,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:14,860 INFO L225 Difference]: With dead ends: 5527 [2023-12-20 14:49:14,860 INFO L226 Difference]: Without dead ends: 4410 [2023-12-20 14:49:14,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:49:14,865 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1058 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:14,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 790 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:49:14,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4410 states. [2023-12-20 14:49:15,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4410 to 3992. [2023-12-20 14:49:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3147 states have (on average 1.331108992691452) internal successors, (4189), 3222 states have internal predecessors, (4189), 431 states have call successors, (431), 324 states have call predecessors, (431), 412 states have return successors, (584), 451 states have call predecessors, (584), 428 states have call successors, (584) [2023-12-20 14:49:15,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 5204 transitions. [2023-12-20 14:49:15,266 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 5204 transitions. Word has length 112 [2023-12-20 14:49:15,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:15,266 INFO L495 AbstractCegarLoop]: Abstraction has 3992 states and 5204 transitions. [2023-12-20 14:49:15,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 5204 transitions. [2023-12-20 14:49:15,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:15,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:15,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:15,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:49:15,269 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:15,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:15,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2073244773, now seen corresponding path program 1 times [2023-12-20 14:49:15,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:15,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848076015] [2023-12-20 14:49:15,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:15,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:15,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:15,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:15,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:15,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:15,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:15,406 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 14:49:15,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:15,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848076015] [2023-12-20 14:49:15,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848076015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:15,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:15,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:15,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022292336] [2023-12-20 14:49:15,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:15,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:15,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:15,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:15,410 INFO L87 Difference]: Start difference. First operand 3992 states and 5204 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:17,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:17,458 INFO L93 Difference]: Finished difference Result 6677 states and 9534 transitions. [2023-12-20 14:49:17,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:49:17,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:17,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:17,470 INFO L225 Difference]: With dead ends: 6677 [2023-12-20 14:49:17,471 INFO L226 Difference]: Without dead ends: 5560 [2023-12-20 14:49:17,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:49:17,474 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1156 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 2530 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:17,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 1655 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2530 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 14:49:17,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5560 states. [2023-12-20 14:49:17,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 4881. [2023-12-20 14:49:17,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4881 states, 3944 states have (on average 1.381338742393509) internal successors, (5448), 4023 states have internal predecessors, (5448), 495 states have call successors, (495), 348 states have call predecessors, (495), 440 states have return successors, (670), 519 states have call predecessors, (670), 492 states have call successors, (670) [2023-12-20 14:49:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4881 states to 4881 states and 6613 transitions. [2023-12-20 14:49:17,834 INFO L78 Accepts]: Start accepts. Automaton has 4881 states and 6613 transitions. Word has length 112 [2023-12-20 14:49:17,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:17,835 INFO L495 AbstractCegarLoop]: Abstraction has 4881 states and 6613 transitions. [2023-12-20 14:49:17,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:17,835 INFO L276 IsEmpty]: Start isEmpty. Operand 4881 states and 6613 transitions. [2023-12-20 14:49:17,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:17,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:17,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:17,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:49:17,837 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:17,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:17,838 INFO L85 PathProgramCache]: Analyzing trace with hash -344659293, now seen corresponding path program 1 times [2023-12-20 14:49:17,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:17,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613039431] [2023-12-20 14:49:17,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:17,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:17,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:17,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:17,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:17,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:17,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:17,937 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 14:49:17,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:17,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613039431] [2023-12-20 14:49:17,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613039431] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:17,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:17,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:17,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49851460] [2023-12-20 14:49:17,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:17,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:17,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:17,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:17,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:17,939 INFO L87 Difference]: Start difference. First operand 4881 states and 6613 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:19,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:19,238 INFO L93 Difference]: Finished difference Result 7569 states and 10976 transitions. [2023-12-20 14:49:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:49:19,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:19,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:19,255 INFO L225 Difference]: With dead ends: 7569 [2023-12-20 14:49:19,255 INFO L226 Difference]: Without dead ends: 5563 [2023-12-20 14:49:19,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:49:19,261 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 911 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:19,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 951 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:49:19,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2023-12-20 14:49:19,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 4881. [2023-12-20 14:49:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4881 states, 3944 states have (on average 1.3790567951318458) internal successors, (5439), 4023 states have internal predecessors, (5439), 495 states have call successors, (495), 348 states have call predecessors, (495), 440 states have return successors, (670), 519 states have call predecessors, (670), 492 states have call successors, (670) [2023-12-20 14:49:19,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4881 states to 4881 states and 6604 transitions. [2023-12-20 14:49:19,669 INFO L78 Accepts]: Start accepts. Automaton has 4881 states and 6604 transitions. Word has length 112 [2023-12-20 14:49:19,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:19,669 INFO L495 AbstractCegarLoop]: Abstraction has 4881 states and 6604 transitions. [2023-12-20 14:49:19,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:19,669 INFO L276 IsEmpty]: Start isEmpty. Operand 4881 states and 6604 transitions. [2023-12-20 14:49:19,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:19,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:19,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:19,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:49:19,671 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:19,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:19,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1115392859, now seen corresponding path program 1 times [2023-12-20 14:49:19,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:19,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842343787] [2023-12-20 14:49:19,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:19,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:19,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:19,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:19,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:19,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:19,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:19,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842343787] [2023-12-20 14:49:19,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842343787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:19,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:19,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:19,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31880938] [2023-12-20 14:49:19,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:19,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:19,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:19,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:19,779 INFO L87 Difference]: Start difference. First operand 4881 states and 6604 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:22,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:22,252 INFO L93 Difference]: Finished difference Result 10600 states and 15753 transitions. [2023-12-20 14:49:22,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:49:22,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:22,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:22,329 INFO L225 Difference]: With dead ends: 10600 [2023-12-20 14:49:22,330 INFO L226 Difference]: Without dead ends: 8594 [2023-12-20 14:49:22,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:49:22,340 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1213 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:22,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 1648 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 14:49:22,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8594 states. [2023-12-20 14:49:22,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8594 to 6653. [2023-12-20 14:49:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6653 states, 5540 states have (on average 1.4348375451263538) internal successors, (7949), 5627 states have internal predecessors, (7949), 615 states have call successors, (615), 396 states have call predecessors, (615), 496 states have return successors, (852), 647 states have call predecessors, (852), 612 states have call successors, (852) [2023-12-20 14:49:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6653 states to 6653 states and 9416 transitions. [2023-12-20 14:49:22,814 INFO L78 Accepts]: Start accepts. Automaton has 6653 states and 9416 transitions. Word has length 112 [2023-12-20 14:49:22,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:22,814 INFO L495 AbstractCegarLoop]: Abstraction has 6653 states and 9416 transitions. [2023-12-20 14:49:22,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 6653 states and 9416 transitions. [2023-12-20 14:49:22,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:22,818 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:22,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:22,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:49:22,819 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:22,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:22,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2110086557, now seen corresponding path program 1 times [2023-12-20 14:49:22,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:22,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184834067] [2023-12-20 14:49:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:22,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:22,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:22,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:22,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:22,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:22,931 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 14:49:22,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:22,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184834067] [2023-12-20 14:49:22,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184834067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:22,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:22,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:22,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400929759] [2023-12-20 14:49:22,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:22,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:22,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:22,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:22,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:22,933 INFO L87 Difference]: Start difference. First operand 6653 states and 9416 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:25,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:25,441 INFO L93 Difference]: Finished difference Result 17470 states and 26751 transitions. [2023-12-20 14:49:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:49:25,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:25,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:25,474 INFO L225 Difference]: With dead ends: 17470 [2023-12-20 14:49:25,475 INFO L226 Difference]: Without dead ends: 13692 [2023-12-20 14:49:25,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:49:25,485 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1432 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:25,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1201 Invalid, 2313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 14:49:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13692 states. [2023-12-20 14:49:26,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13692 to 10034. [2023-12-20 14:49:26,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10034 states, 8577 states have (on average 1.4796548909875247) internal successors, (12691), 8680 states have internal predecessors, (12691), 847 states have call successors, (847), 492 states have call predecessors, (847), 608 states have return successors, (1262), 895 states have call predecessors, (1262), 844 states have call successors, (1262) [2023-12-20 14:49:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10034 states to 10034 states and 14800 transitions. [2023-12-20 14:49:26,154 INFO L78 Accepts]: Start accepts. Automaton has 10034 states and 14800 transitions. Word has length 112 [2023-12-20 14:49:26,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:26,154 INFO L495 AbstractCegarLoop]: Abstraction has 10034 states and 14800 transitions. [2023-12-20 14:49:26,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:26,154 INFO L276 IsEmpty]: Start isEmpty. Operand 10034 states and 14800 transitions. [2023-12-20 14:49:26,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:26,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:26,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:26,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:49:26,160 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:26,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:26,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1598604517, now seen corresponding path program 1 times [2023-12-20 14:49:26,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:26,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46346849] [2023-12-20 14:49:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:26,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:26,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:26,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:26,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:26,265 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 14:49:26,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:26,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46346849] [2023-12-20 14:49:26,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46346849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:26,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:26,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:26,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583371250] [2023-12-20 14:49:26,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:26,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:26,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:26,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:26,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:26,267 INFO L87 Difference]: Start difference. First operand 10034 states and 14800 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:27,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:27,873 INFO L93 Difference]: Finished difference Result 19365 states and 29977 transitions. [2023-12-20 14:49:27,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:49:27,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:27,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:27,904 INFO L225 Difference]: With dead ends: 19365 [2023-12-20 14:49:27,904 INFO L226 Difference]: Without dead ends: 12206 [2023-12-20 14:49:27,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:49:27,924 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 909 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:27,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 950 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 14:49:27,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12206 states. [2023-12-20 14:49:28,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12206 to 10034. [2023-12-20 14:49:28,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10034 states, 8577 states have (on average 1.4758073918619563) internal successors, (12658), 8680 states have internal predecessors, (12658), 847 states have call successors, (847), 492 states have call predecessors, (847), 608 states have return successors, (1262), 895 states have call predecessors, (1262), 844 states have call successors, (1262) [2023-12-20 14:49:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10034 states to 10034 states and 14767 transitions. [2023-12-20 14:49:28,689 INFO L78 Accepts]: Start accepts. Automaton has 10034 states and 14767 transitions. Word has length 112 [2023-12-20 14:49:28,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:28,690 INFO L495 AbstractCegarLoop]: Abstraction has 10034 states and 14767 transitions. [2023-12-20 14:49:28,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:28,690 INFO L276 IsEmpty]: Start isEmpty. Operand 10034 states and 14767 transitions. [2023-12-20 14:49:28,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:28,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:28,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:28,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 14:49:28,695 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:28,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:28,696 INFO L85 PathProgramCache]: Analyzing trace with hash -359970269, now seen corresponding path program 1 times [2023-12-20 14:49:28,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:28,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308322673] [2023-12-20 14:49:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:28,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:28,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:28,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:28,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:28,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:28,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:28,814 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 14:49:28,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:28,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308322673] [2023-12-20 14:49:28,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308322673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:28,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:28,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:28,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907183839] [2023-12-20 14:49:28,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:28,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:28,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:28,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:28,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:28,815 INFO L87 Difference]: Start difference. First operand 10034 states and 14767 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:31,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:31,624 INFO L93 Difference]: Finished difference Result 29959 states and 46745 transitions. [2023-12-20 14:49:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:49:31,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:31,683 INFO L225 Difference]: With dead ends: 29959 [2023-12-20 14:49:31,683 INFO L226 Difference]: Without dead ends: 22800 [2023-12-20 14:49:31,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:49:31,705 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1299 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:31,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 1648 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 14:49:31,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22800 states. [2023-12-20 14:49:32,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22800 to 16988. [2023-12-20 14:49:32,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16988 states, 14859 states have (on average 1.5116764250622519) internal successors, (22462), 14994 states have internal predecessors, (22462), 1295 states have call successors, (1295), 684 states have call predecessors, (1295), 832 states have return successors, (2228), 1375 states have call predecessors, (2228), 1292 states have call successors, (2228) [2023-12-20 14:49:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16988 states to 16988 states and 25985 transitions. [2023-12-20 14:49:32,828 INFO L78 Accepts]: Start accepts. Automaton has 16988 states and 25985 transitions. Word has length 112 [2023-12-20 14:49:32,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:32,828 INFO L495 AbstractCegarLoop]: Abstraction has 16988 states and 25985 transitions. [2023-12-20 14:49:32,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:32,828 INFO L276 IsEmpty]: Start isEmpty. Operand 16988 states and 25985 transitions. [2023-12-20 14:49:32,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:32,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:32,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:32,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 14:49:32,837 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:32,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:32,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1516512549, now seen corresponding path program 1 times [2023-12-20 14:49:32,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:32,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616168635] [2023-12-20 14:49:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:32,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,942 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 14:49:32,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:32,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616168635] [2023-12-20 14:49:32,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616168635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:32,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:32,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:32,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671220798] [2023-12-20 14:49:32,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:32,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:32,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:32,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:32,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:32,943 INFO L87 Difference]: Start difference. First operand 16988 states and 25985 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:34,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:34,735 INFO L93 Difference]: Finished difference Result 35027 states and 55540 transitions. [2023-12-20 14:49:34,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:49:34,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:34,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:34,787 INFO L225 Difference]: With dead ends: 35027 [2023-12-20 14:49:34,787 INFO L226 Difference]: Without dead ends: 20914 [2023-12-20 14:49:34,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:49:34,815 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 1058 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:34,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 789 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:49:34,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20914 states. [2023-12-20 14:49:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20914 to 16988. [2023-12-20 14:49:36,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16988 states, 14859 states have (on average 1.507301971868901) internal successors, (22397), 14994 states have internal predecessors, (22397), 1295 states have call successors, (1295), 684 states have call predecessors, (1295), 832 states have return successors, (2228), 1375 states have call predecessors, (2228), 1292 states have call successors, (2228) [2023-12-20 14:49:36,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16988 states to 16988 states and 25920 transitions. [2023-12-20 14:49:36,212 INFO L78 Accepts]: Start accepts. Automaton has 16988 states and 25920 transitions. Word has length 112 [2023-12-20 14:49:36,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:36,212 INFO L495 AbstractCegarLoop]: Abstraction has 16988 states and 25920 transitions. [2023-12-20 14:49:36,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:36,212 INFO L276 IsEmpty]: Start isEmpty. Operand 16988 states and 25920 transitions. [2023-12-20 14:49:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:36,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:36,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:36,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 14:49:36,221 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:36,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:36,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1453598553, now seen corresponding path program 1 times [2023-12-20 14:49:36,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:36,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418813720] [2023-12-20 14:49:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:36,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:36,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:36,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:36,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:36,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:36,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:36,339 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 14:49:36,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:36,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418813720] [2023-12-20 14:49:36,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418813720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:36,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:36,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:36,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032691939] [2023-12-20 14:49:36,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:36,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:36,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:36,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:36,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:36,340 INFO L87 Difference]: Start difference. First operand 16988 states and 25920 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:39,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:39,602 INFO L93 Difference]: Finished difference Result 53819 states and 85469 transitions. [2023-12-20 14:49:39,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:49:39,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:39,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:39,715 INFO L225 Difference]: With dead ends: 53819 [2023-12-20 14:49:39,715 INFO L226 Difference]: Without dead ends: 39706 [2023-12-20 14:49:39,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:49:39,744 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1182 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:39,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 1648 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 14:49:39,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39706 states. [2023-12-20 14:49:41,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39706 to 31023. [2023-12-20 14:49:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31023 states, 27582 states have (on average 1.529802044811834) internal successors, (42195), 27781 states have internal predecessors, (42195), 2159 states have call successors, (2159), 1068 states have call predecessors, (2159), 1280 states have return successors, (4614), 2303 states have call predecessors, (4614), 2156 states have call successors, (4614) [2023-12-20 14:49:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31023 states to 31023 states and 48968 transitions. [2023-12-20 14:49:41,909 INFO L78 Accepts]: Start accepts. Automaton has 31023 states and 48968 transitions. Word has length 112 [2023-12-20 14:49:41,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:41,910 INFO L495 AbstractCegarLoop]: Abstraction has 31023 states and 48968 transitions. [2023-12-20 14:49:41,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:41,910 INFO L276 IsEmpty]: Start isEmpty. Operand 31023 states and 48968 transitions. [2023-12-20 14:49:41,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:41,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:41,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:41,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 14:49:41,949 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:41,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:41,950 INFO L85 PathProgramCache]: Analyzing trace with hash 113159397, now seen corresponding path program 1 times [2023-12-20 14:49:41,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:41,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689322952] [2023-12-20 14:49:41,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:41,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:42,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:42,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:42,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:42,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:42,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:42,136 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 14:49:42,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:42,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689322952] [2023-12-20 14:49:42,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689322952] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:42,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:42,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:42,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323988635] [2023-12-20 14:49:42,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:42,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:42,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:42,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:42,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:42,137 INFO L87 Difference]: Start difference. First operand 31023 states and 48968 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:47,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:47,058 INFO L93 Difference]: Finished difference Result 102380 states and 166295 transitions. [2023-12-20 14:49:47,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:49:47,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:47,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:47,275 INFO L225 Difference]: With dead ends: 102380 [2023-12-20 14:49:47,275 INFO L226 Difference]: Without dead ends: 74232 [2023-12-20 14:49:47,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:49:47,338 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1131 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:47,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 1648 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-20 14:49:47,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74232 states. [2023-12-20 14:49:50,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74232 to 59088. [2023-12-20 14:49:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59088 states, 53087 states have (on average 1.5429201122685403) internal successors, (81909), 53414 states have internal predecessors, (81909), 3823 states have call successors, (3823), 1836 states have call predecessors, (3823), 2176 states have return successors, (10780), 4095 states have call predecessors, (10780), 3820 states have call successors, (10780) [2023-12-20 14:49:51,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59088 states to 59088 states and 96512 transitions. [2023-12-20 14:49:51,175 INFO L78 Accepts]: Start accepts. Automaton has 59088 states and 96512 transitions. Word has length 112 [2023-12-20 14:49:51,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:51,175 INFO L495 AbstractCegarLoop]: Abstraction has 59088 states and 96512 transitions. [2023-12-20 14:49:51,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:51,183 INFO L276 IsEmpty]: Start isEmpty. Operand 59088 states and 96512 transitions. [2023-12-20 14:49:51,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:49:51,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:51,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:51,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 14:49:51,229 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:51,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:51,229 INFO L85 PathProgramCache]: Analyzing trace with hash -944678681, now seen corresponding path program 1 times [2023-12-20 14:49:51,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:51,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488909660] [2023-12-20 14:49:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:51,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:51,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:51,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:51,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:49:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:51,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:51,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:49:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:51,549 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 14:49:51,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:51,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488909660] [2023-12-20 14:49:51,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488909660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:51,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:51,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:51,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109917288] [2023-12-20 14:49:51,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:51,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:51,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:51,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:51,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:51,550 INFO L87 Difference]: Start difference. First operand 59088 states and 96512 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:58,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:58,620 INFO L93 Difference]: Finished difference Result 200861 states and 331508 transitions. [2023-12-20 14:49:58,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 14:49:58,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:49:58,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:59,220 INFO L225 Difference]: With dead ends: 200861 [2023-12-20 14:49:59,220 INFO L226 Difference]: Without dead ends: 144649 [2023-12-20 14:49:59,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-20 14:49:59,316 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1161 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:59,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 1182 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 14:49:59,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144649 states. [2023-12-20 14:50:05,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144649 to 115294. [2023-12-20 14:50:06,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115294 states, 104022 states have (on average 1.5498259983465037) internal successors, (161216), 104991 states have internal predecessors, (161216), 7296 states have call successors, (7296), 3378 states have call predecessors, (7296), 3974 states have return successors, (20815), 7182 states have call predecessors, (20815), 7293 states have call successors, (20815) [2023-12-20 14:50:06,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115294 states to 115294 states and 189327 transitions. [2023-12-20 14:50:06,627 INFO L78 Accepts]: Start accepts. Automaton has 115294 states and 189327 transitions. Word has length 112 [2023-12-20 14:50:06,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:50:06,628 INFO L495 AbstractCegarLoop]: Abstraction has 115294 states and 189327 transitions. [2023-12-20 14:50:06,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:06,628 INFO L276 IsEmpty]: Start isEmpty. Operand 115294 states and 189327 transitions. [2023-12-20 14:50:06,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-20 14:50:06,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:50:06,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:50:06,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 14:50:06,658 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:50:06,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:50:06,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1974037979, now seen corresponding path program 1 times [2023-12-20 14:50:06,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:50:06,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361601322] [2023-12-20 14:50:06,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:50:06,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:50:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:06,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:50:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:06,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:50:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:06,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 14:50:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:06,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:50:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:06,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 14:50:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:06,860 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 14:50:06,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:50:06,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361601322] [2023-12-20 14:50:06,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361601322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:50:06,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:50:06,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:50:06,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535258084] [2023-12-20 14:50:06,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:50:06,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:50:06,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:50:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:50:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:50:06,862 INFO L87 Difference]: Start difference. First operand 115294 states and 189327 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:19,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:50:19,031 INFO L93 Difference]: Finished difference Result 323718 states and 534748 transitions. [2023-12-20 14:50:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 14:50:19,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2023-12-20 14:50:19,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:50:19,940 INFO L225 Difference]: With dead ends: 323718 [2023-12-20 14:50:19,940 INFO L226 Difference]: Without dead ends: 211300 [2023-12-20 14:50:20,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-20 14:50:20,217 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 2538 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2560 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 2726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:50:20,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2560 Valid, 1397 Invalid, 2726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 14:50:20,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211300 states. [2023-12-20 14:50:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211300 to 168862. [2023-12-20 14:50:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168862 states, 152554 states have (on average 1.535423522162644) internal successors, (234235), 153780 states have internal predecessors, (234235), 10528 states have call successors, (10528), 4926 states have call predecessors, (10528), 5778 states have return successors, (31399), 10413 states have call predecessors, (31399), 10525 states have call successors, (31399) [2023-12-20 14:50:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168862 states to 168862 states and 276162 transitions. [2023-12-20 14:50:30,979 INFO L78 Accepts]: Start accepts. Automaton has 168862 states and 276162 transitions. Word has length 112 [2023-12-20 14:50:30,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:50:30,979 INFO L495 AbstractCegarLoop]: Abstraction has 168862 states and 276162 transitions. [2023-12-20 14:50:30,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:30,979 INFO L276 IsEmpty]: Start isEmpty. Operand 168862 states and 276162 transitions. [2023-12-20 14:50:31,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 14:50:31,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:50:31,053 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:50:31,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-20 14:50:31,053 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:50:31,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:50:31,054 INFO L85 PathProgramCache]: Analyzing trace with hash 209872971, now seen corresponding path program 1 times [2023-12-20 14:50:31,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:50:31,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369731936] [2023-12-20 14:50:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:50:31,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:50:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:50:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:50:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:50:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:50:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:50:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:50:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:50:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:50:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-20 14:50:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-20 14:50:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 14:50:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:50:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:50:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-20 14:50:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-20 14:50:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 14:50:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-20 14:50:31,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:50:31,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369731936] [2023-12-20 14:50:31,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369731936] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:50:31,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135342953] [2023-12-20 14:50:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:50:31,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:50:31,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:50:31,147 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 14:50:31,164 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 14:50:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:31,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 14:50:31,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:50:31,304 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 14:50:31,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:50:31,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135342953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:50:31,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:50:31,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-12-20 14:50:31,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043502561] [2023-12-20 14:50:31,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:50:31,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:50:31,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:50:31,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:50:31,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:50:31,306 INFO L87 Difference]: Start difference. First operand 168862 states and 276162 transitions. Second operand has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 14:50:39,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:50:39,278 INFO L93 Difference]: Finished difference Result 170540 states and 278201 transitions. [2023-12-20 14:50:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:50:39,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2023-12-20 14:50:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:50:39,960 INFO L225 Difference]: With dead ends: 170540 [2023-12-20 14:50:39,960 INFO L226 Difference]: Without dead ends: 167691 [2023-12-20 14:50:40,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-20 14:50:40,023 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 32 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:50:40,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2273 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:50:40,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167691 states. [2023-12-20 14:50:49,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167691 to 167571. [2023-12-20 14:50:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167571 states, 151646 states have (on average 1.5372973899740185) internal successors, (233125), 152817 states have internal predecessors, (233125), 10348 states have call successors, (10348), 4767 states have call predecessors, (10348), 5575 states have return successors, (31144), 10242 states have call predecessors, (31144), 10345 states have call successors, (31144) [2023-12-20 14:50:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167571 states to 167571 states and 274617 transitions. [2023-12-20 14:50:50,829 INFO L78 Accepts]: Start accepts. Automaton has 167571 states and 274617 transitions. Word has length 131 [2023-12-20 14:50:50,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:50:50,829 INFO L495 AbstractCegarLoop]: Abstraction has 167571 states and 274617 transitions. [2023-12-20 14:50:50,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 14:50:50,830 INFO L276 IsEmpty]: Start isEmpty. Operand 167571 states and 274617 transitions. [2023-12-20 14:50:51,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 14:50:51,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:50:51,270 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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] [2023-12-20 14:50:51,278 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 14:50:51,477 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,SelfDestructingSolverStorable32 [2023-12-20 14:50:51,478 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:50:51,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:50:51,478 INFO L85 PathProgramCache]: Analyzing trace with hash -291409545, now seen corresponding path program 1 times [2023-12-20 14:50:51,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:50:51,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866650105] [2023-12-20 14:50:51,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:50:51,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:50:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:50:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:50:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:50:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:50:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:50:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:50:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:50:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 14:50:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:50:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 14:50:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 14:50:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:50:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:50:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 14:50:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-20 14:50:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 14:50:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-20 14:50:51,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:50:51,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866650105] [2023-12-20 14:50:51,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866650105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:50:51,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:50:51,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:50:51,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146165065] [2023-12-20 14:50:51,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:50:51,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:50:51,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:50:51,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:50:51,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:50:51,585 INFO L87 Difference]: Start difference. First operand 167571 states and 274617 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14)