/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:37:59,677 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:37:59,758 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:37:59,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:37:59,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:37:59,799 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:37:59,800 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:37:59,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:37:59,801 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:37:59,805 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:37:59,805 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:37:59,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:37:59,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:37:59,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:37:59,808 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:37:59,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:37:59,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:37:59,808 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:37:59,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:37:59,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:37:59,810 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:37:59,810 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:37:59,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:37:59,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:37:59,811 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:37:59,811 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:37:59,811 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:37:59,812 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:37:59,812 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:37:59,812 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:37:59,813 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:37:59,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:37:59,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:37:59,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:37:59,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:37:59,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:37:59,814 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:37:59,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:37:59,814 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:37:59,815 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:37:59,815 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:37:59,815 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:37:59,815 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:37:59,815 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:38:00,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:38:00,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:38:00,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:38:00,074 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:38:00,076 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:38:00,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c [2023-12-19 01:38:01,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:38:01,483 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:38:01,483 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c [2023-12-19 01:38:01,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d8ce6da3/7cad96c6ce9d4229882f24a0889f7cb4/FLAG3cfb6e0b7 [2023-12-19 01:38:01,508 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d8ce6da3/7cad96c6ce9d4229882f24a0889f7cb4 [2023-12-19 01:38:01,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:38:01,512 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:38:01,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:38:01,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:38:01,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:38:01,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:38:01" (1/1) ... [2023-12-19 01:38:01,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784aa2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:01, skipping insertion in model container [2023-12-19 01:38:01,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:38:01" (1/1) ... [2023-12-19 01:38:01,590 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:38:01,736 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.14.cil.c[914,927] [2023-12-19 01:38:01,811 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.14.cil.c[7115,7128] [2023-12-19 01:38:01,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:38:01,931 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:38:01,939 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.14.cil.c[914,927] [2023-12-19 01:38:01,953 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.14.cil.c[7115,7128] [2023-12-19 01:38:02,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:38:02,037 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:38:02,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:02 WrapperNode [2023-12-19 01:38:02,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:38:02,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:38:02,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:38:02,039 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:38:02,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:02" (1/1) ... [2023-12-19 01:38:02,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:02" (1/1) ... [2023-12-19 01:38:02,128 INFO L138 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1072 [2023-12-19 01:38:02,128 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:38:02,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:38:02,129 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:38:02,129 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:38:02,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:02" (1/1) ... [2023-12-19 01:38:02,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:02" (1/1) ... [2023-12-19 01:38:02,144 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:02" (1/1) ... [2023-12-19 01:38:02,166 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 01:38:02,166 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:02" (1/1) ... [2023-12-19 01:38:02,166 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:02" (1/1) ... [2023-12-19 01:38:02,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:02" (1/1) ... [2023-12-19 01:38:02,231 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:02" (1/1) ... [2023-12-19 01:38:02,234 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:02" (1/1) ... [2023-12-19 01:38:02,237 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:02" (1/1) ... [2023-12-19 01:38:02,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:38:02,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:38:02,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:38:02,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:38:02,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:02" (1/1) ... [2023-12-19 01:38:02,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:38:02,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:38:02,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 01:38:02,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 01:38:02,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:38:02,378 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-19 01:38:02,378 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-19 01:38:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-19 01:38:02,380 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-19 01:38:02,380 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-19 01:38:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-19 01:38:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-19 01:38:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-19 01:38:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-19 01:38:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-19 01:38:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-19 01:38:02,381 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-19 01:38:02,381 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-19 01:38:02,382 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-19 01:38:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-19 01:38:02,382 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-19 01:38:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-19 01:38:02,382 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-19 01:38:02,382 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-19 01:38:02,383 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-19 01:38:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-19 01:38:02,383 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-19 01:38:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:38:02,383 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-19 01:38:02,384 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-19 01:38:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-19 01:38:02,385 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-19 01:38:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:38:02,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:38:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-19 01:38:02,385 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-19 01:38:02,385 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-19 01:38:02,385 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-19 01:38:02,551 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:38:02,553 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:38:03,365 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:38:03,423 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:38:03,423 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-12-19 01:38:03,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:38:03 BoogieIcfgContainer [2023-12-19 01:38:03,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:38:03,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:38:03,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:38:03,429 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:38:03,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:38:01" (1/3) ... [2023-12-19 01:38:03,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ae3dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:38:03, skipping insertion in model container [2023-12-19 01:38:03,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:38:02" (2/3) ... [2023-12-19 01:38:03,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ae3dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:38:03, skipping insertion in model container [2023-12-19 01:38:03,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:38:03" (3/3) ... [2023-12-19 01:38:03,431 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.14.cil.c [2023-12-19 01:38:03,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:38:03,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 01:38:03,492 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:38:03,498 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;@18b16aea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:38:03,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 01:38:03,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 445 states, 385 states have (on average 1.716883116883117) internal successors, (661), 393 states have internal predecessors, (661), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-19 01:38:03,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:38:03,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:03,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:03,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:03,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:03,524 INFO L85 PathProgramCache]: Analyzing trace with hash 294485212, now seen corresponding path program 1 times [2023-12-19 01:38:03,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:03,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856198825] [2023-12-19 01:38:03,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:03,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:03,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:03,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:04,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:04,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856198825] [2023-12-19 01:38:04,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856198825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:04,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:04,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:38:04,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641835338] [2023-12-19 01:38:04,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:04,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:38:04,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:04,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:38:04,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:38:04,075 INFO L87 Difference]: Start difference. First operand has 445 states, 385 states have (on average 1.716883116883117) internal successors, (661), 393 states have internal predecessors, (661), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 8 states, 8 states have (on average 5.375) 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) [2023-12-19 01:38:05,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:05,464 INFO L93 Difference]: Finished difference Result 989 states and 1641 transitions. [2023-12-19 01:38:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:38:05,467 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 [2023-12-19 01:38:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:05,480 INFO L225 Difference]: With dead ends: 989 [2023-12-19 01:38:05,480 INFO L226 Difference]: Without dead ends: 564 [2023-12-19 01:38:05,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:38:05,489 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1137 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:05,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1516 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:38:05,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-12-19 01:38:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 527. [2023-12-19 01:38:05,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 450 states have (on average 1.5844444444444445) internal successors, (713), 457 states have internal predecessors, (713), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2023-12-19 01:38:05,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 820 transitions. [2023-12-19 01:38:05,587 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 820 transitions. Word has length 58 [2023-12-19 01:38:05,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:05,588 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 820 transitions. [2023-12-19 01:38:05,588 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) [2023-12-19 01:38:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 820 transitions. [2023-12-19 01:38:05,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:38:05,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:05,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:05,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:38:05,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:05,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:05,593 INFO L85 PathProgramCache]: Analyzing trace with hash -796676835, now seen corresponding path program 1 times [2023-12-19 01:38:05,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:05,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946446753] [2023-12-19 01:38:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:05,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:05,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:05,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:05,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:05,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:05,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:05,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:05,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:05,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:05,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946446753] [2023-12-19 01:38:05,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946446753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:05,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:05,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:38:05,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317952986] [2023-12-19 01:38:05,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:05,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:38:05,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:05,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:38:05,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:38:05,815 INFO L87 Difference]: Start difference. First operand 527 states and 820 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) [2023-12-19 01:38:07,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:07,084 INFO L93 Difference]: Finished difference Result 847 states and 1270 transitions. [2023-12-19 01:38:07,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 01:38:07,084 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 [2023-12-19 01:38:07,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:07,089 INFO L225 Difference]: With dead ends: 847 [2023-12-19 01:38:07,090 INFO L226 Difference]: Without dead ends: 685 [2023-12-19 01:38:07,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-19 01:38:07,092 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1403 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:07,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 1814 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:38:07,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-12-19 01:38:07,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 615. [2023-12-19 01:38:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 518 states have (on average 1.5617760617760619) internal successors, (809), 527 states have internal predecessors, (809), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2023-12-19 01:38:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 946 transitions. [2023-12-19 01:38:07,140 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 946 transitions. Word has length 58 [2023-12-19 01:38:07,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:07,140 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 946 transitions. [2023-12-19 01:38:07,141 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) [2023-12-19 01:38:07,141 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 946 transitions. [2023-12-19 01:38:07,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:38:07,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:07,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:07,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:38:07,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:07,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1131595867, now seen corresponding path program 1 times [2023-12-19 01:38:07,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:07,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053892382] [2023-12-19 01:38:07,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:07,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:07,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:07,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:07,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:07,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:07,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:07,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:07,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053892382] [2023-12-19 01:38:07,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053892382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:07,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:07,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:38:07,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796036814] [2023-12-19 01:38:07,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:07,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:38:07,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:38:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:38:07,297 INFO L87 Difference]: Start difference. First operand 615 states and 946 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:38:08,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:08,575 INFO L93 Difference]: Finished difference Result 891 states and 1335 transitions. [2023-12-19 01:38:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:38:08,576 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-19 01:38:08,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:08,580 INFO L225 Difference]: With dead ends: 891 [2023-12-19 01:38:08,581 INFO L226 Difference]: Without dead ends: 647 [2023-12-19 01:38:08,582 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 [2023-12-19 01:38:08,583 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 620 mSDsluCounter, 2102 mSDsCounter, 0 mSdLazyCounter, 2152 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 2245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:08,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 2459 Invalid, 2245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2152 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:38:08,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-12-19 01:38:08,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 619. [2023-12-19 01:38:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 521 states have (on average 1.5547024952015356) internal successors, (810), 530 states have internal predecessors, (810), 64 states have call successors, (64), 29 states have call predecessors, (64), 32 states have return successors, (74), 63 states have call predecessors, (74), 60 states have call successors, (74) [2023-12-19 01:38:08,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 948 transitions. [2023-12-19 01:38:08,619 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 948 transitions. Word has length 58 [2023-12-19 01:38:08,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:08,620 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 948 transitions. [2023-12-19 01:38:08,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:38:08,620 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 948 transitions. [2023-12-19 01:38:08,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-19 01:38:08,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:08,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:08,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:38:08,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:08,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:08,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1112387431, now seen corresponding path program 1 times [2023-12-19 01:38:08,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:08,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285884068] [2023-12-19 01:38:08,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:08,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:08,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:08,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285884068] [2023-12-19 01:38:08,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285884068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:08,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:08,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-19 01:38:08,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153962891] [2023-12-19 01:38:08,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:08,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:38:08,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:08,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:38:08,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:38:08,766 INFO L87 Difference]: Start difference. First operand 619 states and 948 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-19 01:38:10,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:10,556 INFO L93 Difference]: Finished difference Result 1843 states and 2646 transitions. [2023-12-19 01:38:10,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 01:38:10,557 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-12-19 01:38:10,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:10,564 INFO L225 Difference]: With dead ends: 1843 [2023-12-19 01:38:10,564 INFO L226 Difference]: Without dead ends: 1577 [2023-12-19 01:38:10,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 01:38:10,567 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 3884 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3902 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:10,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3902 Valid, 1912 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:38:10,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2023-12-19 01:38:10,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1454. [2023-12-19 01:38:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1170 states have (on average 1.4384615384615385) internal successors, (1683), 1194 states have internal predecessors, (1683), 152 states have call successors, (152), 112 states have call predecessors, (152), 130 states have return successors, (188), 150 states have call predecessors, (188), 148 states have call successors, (188) [2023-12-19 01:38:10,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 2023 transitions. [2023-12-19 01:38:10,682 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 2023 transitions. Word has length 58 [2023-12-19 01:38:10,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:10,684 INFO L495 AbstractCegarLoop]: Abstraction has 1454 states and 2023 transitions. [2023-12-19 01:38:10,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-19 01:38:10,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 2023 transitions. [2023-12-19 01:38:10,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:38:10,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:10,686 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] [2023-12-19 01:38:10,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:38:10,687 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:10,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:10,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1694076701, now seen corresponding path program 1 times [2023-12-19 01:38:10,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:10,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333682425] [2023-12-19 01:38:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:10,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:10,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:10,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:10,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:10,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:10,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:10,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:10,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:10,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333682425] [2023-12-19 01:38:10,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333682425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:10,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:10,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:38:10,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273513962] [2023-12-19 01:38:10,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:10,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:38:10,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:10,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:38:10,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:38:10,837 INFO L87 Difference]: Start difference. First operand 1454 states and 2023 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:38:12,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:12,125 INFO L93 Difference]: Finished difference Result 2647 states and 3598 transitions. [2023-12-19 01:38:12,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:38:12,126 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 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 59 [2023-12-19 01:38:12,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:12,133 INFO L225 Difference]: With dead ends: 2647 [2023-12-19 01:38:12,134 INFO L226 Difference]: Without dead ends: 1552 [2023-12-19 01:38:12,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:38:12,140 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 926 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 2042 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 2182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:12,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 2179 Invalid, 2182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2042 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:38:12,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2023-12-19 01:38:12,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1478. [2023-12-19 01:38:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1188 states have (on average 1.4250841750841752) internal successors, (1693), 1212 states have internal predecessors, (1693), 152 states have call successors, (152), 112 states have call predecessors, (152), 136 states have return successors, (194), 156 states have call predecessors, (194), 148 states have call successors, (194) [2023-12-19 01:38:12,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2039 transitions. [2023-12-19 01:38:12,224 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2039 transitions. Word has length 59 [2023-12-19 01:38:12,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:12,225 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 2039 transitions. [2023-12-19 01:38:12,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-19 01:38:12,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2039 transitions. [2023-12-19 01:38:12,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-19 01:38:12,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:12,226 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] [2023-12-19 01:38:12,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:38:12,226 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:12,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:12,227 INFO L85 PathProgramCache]: Analyzing trace with hash 229151333, now seen corresponding path program 1 times [2023-12-19 01:38:12,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:12,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137248345] [2023-12-19 01:38:12,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:12,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:12,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:12,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:12,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:12,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:12,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:12,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137248345] [2023-12-19 01:38:12,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137248345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:12,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:12,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:12,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046515800] [2023-12-19 01:38:12,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:12,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:12,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:12,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:12,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:12,348 INFO L87 Difference]: Start difference. First operand 1478 states and 2039 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) [2023-12-19 01:38:13,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:13,151 INFO L93 Difference]: Finished difference Result 3718 states and 4947 transitions. [2023-12-19 01:38:13,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 01:38:13,152 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 [2023-12-19 01:38:13,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:13,164 INFO L225 Difference]: With dead ends: 3718 [2023-12-19 01:38:13,164 INFO L226 Difference]: Without dead ends: 2600 [2023-12-19 01:38:13,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:38:13,171 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 1679 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:13,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 1197 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:38:13,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2023-12-19 01:38:13,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2496. [2023-12-19 01:38:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 1947 states have (on average 1.3538777606574217) internal successors, (2636), 1993 states have internal predecessors, (2636), 277 states have call successors, (277), 216 states have call predecessors, (277), 270 states have return successors, (402), 291 states have call predecessors, (402), 273 states have call successors, (402) [2023-12-19 01:38:13,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3315 transitions. [2023-12-19 01:38:13,376 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3315 transitions. Word has length 59 [2023-12-19 01:38:13,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:13,378 INFO L495 AbstractCegarLoop]: Abstraction has 2496 states and 3315 transitions. [2023-12-19 01:38:13,378 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) [2023-12-19 01:38:13,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3315 transitions. [2023-12-19 01:38:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 01:38:13,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:13,380 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] [2023-12-19 01:38:13,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:38:13,383 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:13,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash -803739887, now seen corresponding path program 1 times [2023-12-19 01:38:13,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:13,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812635478] [2023-12-19 01:38:13,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:13,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:13,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:13,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:13,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:13,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:13,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:13,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:13,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:13,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:13,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812635478] [2023-12-19 01:38:13,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812635478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:13,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:13,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:38:13,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400913748] [2023-12-19 01:38:13,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:13,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:38:13,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:13,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:38:13,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:38:13,476 INFO L87 Difference]: Start difference. First operand 2496 states and 3315 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) [2023-12-19 01:38:14,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:14,422 INFO L93 Difference]: Finished difference Result 5620 states and 7311 transitions. [2023-12-19 01:38:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:38:14,423 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 [2023-12-19 01:38:14,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:14,439 INFO L225 Difference]: With dead ends: 5620 [2023-12-19 01:38:14,439 INFO L226 Difference]: Without dead ends: 3489 [2023-12-19 01:38:14,445 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 [2023-12-19 01:38:14,446 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 1131 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:14,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 1203 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:38:14,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2023-12-19 01:38:14,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 3243. [2023-12-19 01:38:14,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 2510 states have (on average 1.3326693227091633) internal successors, (3345), 2563 states have internal predecessors, (3345), 367 states have call successors, (367), 294 states have call predecessors, (367), 364 states have return successors, (516), 390 states have call predecessors, (516), 363 states have call successors, (516) [2023-12-19 01:38:14,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4228 transitions. [2023-12-19 01:38:14,655 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4228 transitions. Word has length 60 [2023-12-19 01:38:14,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:14,655 INFO L495 AbstractCegarLoop]: Abstraction has 3243 states and 4228 transitions. [2023-12-19 01:38:14,655 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) [2023-12-19 01:38:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4228 transitions. [2023-12-19 01:38:14,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 01:38:14,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:14,657 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] [2023-12-19 01:38:14,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:38:14,658 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:14,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:14,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1227981392, now seen corresponding path program 1 times [2023-12-19 01:38:14,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:14,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059481930] [2023-12-19 01:38:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:14,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:14,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:14,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:14,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:14,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:14,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:14,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:14,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:14,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:14,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059481930] [2023-12-19 01:38:14,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059481930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:14,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:14,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:38:14,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478039130] [2023-12-19 01:38:14,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:14,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:38:14,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:14,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:38:14,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:38:14,750 INFO L87 Difference]: Start difference. First operand 3243 states and 4228 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) [2023-12-19 01:38:15,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:15,663 INFO L93 Difference]: Finished difference Result 6880 states and 8818 transitions. [2023-12-19 01:38:15,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 01:38:15,664 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 [2023-12-19 01:38:15,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:15,681 INFO L225 Difference]: With dead ends: 6880 [2023-12-19 01:38:15,681 INFO L226 Difference]: Without dead ends: 4000 [2023-12-19 01:38:15,687 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 [2023-12-19 01:38:15,688 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1315 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:15,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 1262 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:38:15,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2023-12-19 01:38:15,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 3756. [2023-12-19 01:38:15,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3756 states, 2907 states have (on average 1.3216374269005848) internal successors, (3842), 2966 states have internal predecessors, (3842), 423 states have call successors, (423), 344 states have call predecessors, (423), 424 states have return successors, (593), 450 states have call predecessors, (593), 419 states have call successors, (593) [2023-12-19 01:38:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 4858 transitions. [2023-12-19 01:38:15,916 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 4858 transitions. Word has length 66 [2023-12-19 01:38:15,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:15,916 INFO L495 AbstractCegarLoop]: Abstraction has 3756 states and 4858 transitions. [2023-12-19 01:38:15,916 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) [2023-12-19 01:38:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 4858 transitions. [2023-12-19 01:38:15,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-19 01:38:15,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:15,919 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] [2023-12-19 01:38:15,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:38:15,919 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:15,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:15,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1104241021, now seen corresponding path program 1 times [2023-12-19 01:38:15,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:15,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849612638] [2023-12-19 01:38:15,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:15,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:15,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:15,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:15,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:16,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:16,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:16,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:16,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:16,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:16,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849612638] [2023-12-19 01:38:16,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849612638] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:16,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:16,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:16,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901473815] [2023-12-19 01:38:16,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:16,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:16,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:16,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:16,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:16,016 INFO L87 Difference]: Start difference. First operand 3756 states and 4858 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) [2023-12-19 01:38:16,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:16,933 INFO L93 Difference]: Finished difference Result 4729 states and 6042 transitions. [2023-12-19 01:38:16,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:38:16,934 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 [2023-12-19 01:38:16,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:16,954 INFO L225 Difference]: With dead ends: 4729 [2023-12-19 01:38:16,954 INFO L226 Difference]: Without dead ends: 4726 [2023-12-19 01:38:16,956 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 [2023-12-19 01:38:16,958 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1971 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:16,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1981 Valid, 1236 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-19 01:38:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2023-12-19 01:38:17,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4427. [2023-12-19 01:38:17,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 3403 states have (on average 1.3094328533646782) internal successors, (4456), 3469 states have internal predecessors, (4456), 504 states have call successors, (504), 414 states have call predecessors, (504), 518 states have return successors, (717), 548 states have call predecessors, (717), 501 states have call successors, (717) [2023-12-19 01:38:17,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 5677 transitions. [2023-12-19 01:38:17,293 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 5677 transitions. Word has length 67 [2023-12-19 01:38:17,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:17,294 INFO L495 AbstractCegarLoop]: Abstraction has 4427 states and 5677 transitions. [2023-12-19 01:38:17,294 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) [2023-12-19 01:38:17,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 5677 transitions. [2023-12-19 01:38:17,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 01:38:17,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:17,299 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] [2023-12-19 01:38:17,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:38:17,300 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:17,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash 126804218, now seen corresponding path program 1 times [2023-12-19 01:38:17,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:17,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295277235] [2023-12-19 01:38:17,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:17,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:17,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:17,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295277235] [2023-12-19 01:38:17,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295277235] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:38:17,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164177299] [2023-12-19 01:38:17,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:17,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:38:17,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:38:17,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:38:17,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 01:38:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:17,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 01:38:17,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:38:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:17,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:38:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:17,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164177299] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:38:17,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:38:17,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-12-19 01:38:17,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412862717] [2023-12-19 01:38:17,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:38:17,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 01:38:17,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:17,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 01:38:17,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:38:17,920 INFO L87 Difference]: Start difference. First operand 4427 states and 5677 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) [2023-12-19 01:38:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:19,771 INFO L93 Difference]: Finished difference Result 8489 states and 10698 transitions. [2023-12-19 01:38:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 01:38:19,772 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 [2023-12-19 01:38:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:19,819 INFO L225 Difference]: With dead ends: 8489 [2023-12-19 01:38:19,819 INFO L226 Difference]: Without dead ends: 8486 [2023-12-19 01:38:19,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2023-12-19 01:38:19,826 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 2781 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2847 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:19,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2847 Valid, 1748 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1843 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:38:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8486 states. [2023-12-19 01:38:20,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8486 to 7648. [2023-12-19 01:38:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7648 states, 5854 states have (on average 1.2924496071062521) internal successors, (7566), 5971 states have internal predecessors, (7566), 872 states have call successors, (872), 736 states have call predecessors, (872), 920 states have return successors, (1254), 945 states have call predecessors, (1254), 869 states have call successors, (1254) [2023-12-19 01:38:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7648 states to 7648 states and 9692 transitions. [2023-12-19 01:38:20,365 INFO L78 Accepts]: Start accepts. Automaton has 7648 states and 9692 transitions. Word has length 68 [2023-12-19 01:38:20,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:20,366 INFO L495 AbstractCegarLoop]: Abstraction has 7648 states and 9692 transitions. [2023-12-19 01:38:20,367 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) [2023-12-19 01:38:20,367 INFO L276 IsEmpty]: Start isEmpty. Operand 7648 states and 9692 transitions. [2023-12-19 01:38:20,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-19 01:38:20,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:20,370 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] [2023-12-19 01:38:20,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 01:38:20,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 01:38:20,587 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:20,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:20,588 INFO L85 PathProgramCache]: Analyzing trace with hash 697646787, now seen corresponding path program 2 times [2023-12-19 01:38:20,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:20,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794272259] [2023-12-19 01:38:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:20,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:20,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:20,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:20,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:20,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:20,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:20,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:20,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:20,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:20,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794272259] [2023-12-19 01:38:20,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794272259] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:20,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:20,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:38:20,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755397351] [2023-12-19 01:38:20,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:20,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:38:20,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:20,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:38:20,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:38:20,653 INFO L87 Difference]: Start difference. First operand 7648 states and 9692 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) [2023-12-19 01:38:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:21,683 INFO L93 Difference]: Finished difference Result 10402 states and 13157 transitions. [2023-12-19 01:38:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:38:21,683 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 [2023-12-19 01:38:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:21,703 INFO L225 Difference]: With dead ends: 10402 [2023-12-19 01:38:21,704 INFO L226 Difference]: Without dead ends: 4352 [2023-12-19 01:38:21,718 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 [2023-12-19 01:38:21,719 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1253 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:21,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 1301 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:38:21,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4352 states. [2023-12-19 01:38:21,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4352 to 3375. [2023-12-19 01:38:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3375 states, 2617 states have (on average 1.296140619029423) internal successors, (3392), 2656 states have internal predecessors, (3392), 387 states have call successors, (387), 316 states have call predecessors, (387), 369 states have return successors, (510), 407 states have call predecessors, (510), 384 states have call successors, (510) [2023-12-19 01:38:22,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3375 states to 3375 states and 4289 transitions. [2023-12-19 01:38:22,006 INFO L78 Accepts]: Start accepts. Automaton has 3375 states and 4289 transitions. Word has length 71 [2023-12-19 01:38:22,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:22,006 INFO L495 AbstractCegarLoop]: Abstraction has 3375 states and 4289 transitions. [2023-12-19 01:38:22,007 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) [2023-12-19 01:38:22,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3375 states and 4289 transitions. [2023-12-19 01:38:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 01:38:22,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:22,009 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] [2023-12-19 01:38:22,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:38:22,009 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:22,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:22,010 INFO L85 PathProgramCache]: Analyzing trace with hash 606919121, now seen corresponding path program 1 times [2023-12-19 01:38:22,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:22,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498097860] [2023-12-19 01:38:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:22,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:22,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:22,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:22,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:22,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:22,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:22,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:22,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:22,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:38:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:22,133 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:38:22,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:22,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498097860] [2023-12-19 01:38:22,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498097860] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:22,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:22,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:38:22,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261053481] [2023-12-19 01:38:22,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:22,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:38:22,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:22,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:38:22,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:38:22,135 INFO L87 Difference]: Start difference. First operand 3375 states and 4289 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) [2023-12-19 01:38:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:23,605 INFO L93 Difference]: Finished difference Result 9413 states and 11730 transitions. [2023-12-19 01:38:23,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 01:38:23,606 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 [2023-12-19 01:38:23,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:23,628 INFO L225 Difference]: With dead ends: 9413 [2023-12-19 01:38:23,628 INFO L226 Difference]: Without dead ends: 5419 [2023-12-19 01:38:23,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-12-19 01:38:23,640 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 1056 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:23,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 1887 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:38:23,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5419 states. [2023-12-19 01:38:24,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5419 to 5155. [2023-12-19 01:38:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 3928 states have (on average 1.2563645621181263) internal successors, (4935), 4010 states have internal predecessors, (4935), 601 states have call successors, (601), 500 states have call predecessors, (601), 624 states have return successors, (890), 649 states have call predecessors, (890), 598 states have call successors, (890) [2023-12-19 01:38:24,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 6426 transitions. [2023-12-19 01:38:24,058 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 6426 transitions. Word has length 76 [2023-12-19 01:38:24,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:24,058 INFO L495 AbstractCegarLoop]: Abstraction has 5155 states and 6426 transitions. [2023-12-19 01:38:24,059 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) [2023-12-19 01:38:24,059 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 6426 transitions. [2023-12-19 01:38:24,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 01:38:24,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:24,061 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] [2023-12-19 01:38:24,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:38:24,062 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:24,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:24,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1753157252, now seen corresponding path program 1 times [2023-12-19 01:38:24,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:24,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299638280] [2023-12-19 01:38:24,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:24,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:24,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:24,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:24,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:24,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:24,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-19 01:38:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 01:38:24,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:24,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299638280] [2023-12-19 01:38:24,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299638280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:24,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:24,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:38:24,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422601434] [2023-12-19 01:38:24,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:24,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:38:24,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:24,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:38:24,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:38:24,193 INFO L87 Difference]: Start difference. First operand 5155 states and 6426 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) [2023-12-19 01:38:25,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:25,836 INFO L93 Difference]: Finished difference Result 8492 states and 10470 transitions. [2023-12-19 01:38:25,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 01:38:25,837 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 [2023-12-19 01:38:25,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:25,853 INFO L225 Difference]: With dead ends: 8492 [2023-12-19 01:38:25,853 INFO L226 Difference]: Without dead ends: 4362 [2023-12-19 01:38:25,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-12-19 01:38:25,863 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 2268 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:25,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2309 Valid, 1873 Invalid, 2080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 01:38:25,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2023-12-19 01:38:26,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 3948. [2023-12-19 01:38:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 3003 states have (on average 1.2437562437562437) internal successors, (3735), 3068 states have internal predecessors, (3735), 460 states have call successors, (460), 377 states have call predecessors, (460), 483 states have return successors, (636), 507 states have call predecessors, (636), 457 states have call successors, (636) [2023-12-19 01:38:26,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 4831 transitions. [2023-12-19 01:38:26,144 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 4831 transitions. Word has length 86 [2023-12-19 01:38:26,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:26,144 INFO L495 AbstractCegarLoop]: Abstraction has 3948 states and 4831 transitions. [2023-12-19 01:38:26,144 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) [2023-12-19 01:38:26,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 4831 transitions. [2023-12-19 01:38:26,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-19 01:38:26,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:26,149 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] [2023-12-19 01:38:26,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:38:26,149 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:26,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:26,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1032187763, now seen corresponding path program 1 times [2023-12-19 01:38:26,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:26,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812753727] [2023-12-19 01:38:26,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:26,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:38:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-19 01:38:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-19 01:38:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-19 01:38:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-19 01:38:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-19 01:38:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-19 01:38:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-19 01:38:26,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812753727] [2023-12-19 01:38:26,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812753727] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:38:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426951044] [2023-12-19 01:38:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:26,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:38:26,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:38:26,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:38:26,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 01:38:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:26,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 01:38:26,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:38:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 01:38:26,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 01:38:26,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426951044] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:26,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 01:38:26,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-12-19 01:38:26,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386288202] [2023-12-19 01:38:26,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:26,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:38:26,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:26,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:38:26,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-19 01:38:26,538 INFO L87 Difference]: Start difference. First operand 3948 states and 4831 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) [2023-12-19 01:38:26,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:26,801 INFO L93 Difference]: Finished difference Result 5927 states and 7234 transitions. [2023-12-19 01:38:26,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:26,801 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 [2023-12-19 01:38:26,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:26,808 INFO L225 Difference]: With dead ends: 5927 [2023-12-19 01:38:26,809 INFO L226 Difference]: Without dead ends: 2344 [2023-12-19 01:38:26,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-19 01:38:26,816 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 32 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:26,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3174 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 01:38:26,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2023-12-19 01:38:26,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 2189. [2023-12-19 01:38:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2189 states, 1752 states have (on average 1.2734018264840183) internal successors, (2231), 1773 states have internal predecessors, (2231), 219 states have call successors, (219), 164 states have call predecessors, (219), 216 states have return successors, (302), 252 states have call predecessors, (302), 216 states have call successors, (302) [2023-12-19 01:38:26,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 2752 transitions. [2023-12-19 01:38:26,965 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 2752 transitions. Word has length 131 [2023-12-19 01:38:26,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:26,966 INFO L495 AbstractCegarLoop]: Abstraction has 2189 states and 2752 transitions. [2023-12-19 01:38:26,966 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) [2023-12-19 01:38:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 2752 transitions. [2023-12-19 01:38:26,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-19 01:38:26,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:26,970 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:26,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 01:38:27,180 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,SelfDestructingSolverStorable13 [2023-12-19 01:38:27,180 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:27,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:27,181 INFO L85 PathProgramCache]: Analyzing trace with hash -928744293, now seen corresponding path program 1 times [2023-12-19 01:38:27,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:27,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179852742] [2023-12-19 01:38:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:27,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-19 01:38:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-19 01:38:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-19 01:38:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-19 01:38:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-19 01:38:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-19 01:38:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 01:38:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-19 01:38:27,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:27,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179852742] [2023-12-19 01:38:27,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179852742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:27,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:27,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 01:38:27,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124255367] [2023-12-19 01:38:27,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:27,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 01:38:27,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:27,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 01:38:27,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 01:38:27,261 INFO L87 Difference]: Start difference. First operand 2189 states and 2752 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 01:38:28,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:28,088 INFO L93 Difference]: Finished difference Result 2239 states and 2804 transitions. [2023-12-19 01:38:28,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:28,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 133 [2023-12-19 01:38:28,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:28,093 INFO L225 Difference]: With dead ends: 2239 [2023-12-19 01:38:28,093 INFO L226 Difference]: Without dead ends: 1791 [2023-12-19 01:38:28,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-19 01:38:28,095 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 719 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:28,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1428 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 01:38:28,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2023-12-19 01:38:28,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1744. [2023-12-19 01:38:28,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1744 states, 1418 states have (on average 1.2997179125528915) internal successors, (1843), 1434 states have internal predecessors, (1843), 166 states have call successors, (166), 119 states have call predecessors, (166), 158 states have return successors, (226), 191 states have call predecessors, (226), 163 states have call successors, (226) [2023-12-19 01:38:28,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1744 states to 1744 states and 2235 transitions. [2023-12-19 01:38:28,200 INFO L78 Accepts]: Start accepts. Automaton has 1744 states and 2235 transitions. Word has length 133 [2023-12-19 01:38:28,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:28,200 INFO L495 AbstractCegarLoop]: Abstraction has 1744 states and 2235 transitions. [2023-12-19 01:38:28,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-19 01:38:28,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1744 states and 2235 transitions. [2023-12-19 01:38:28,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-19 01:38:28,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:28,203 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] [2023-12-19 01:38:28,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:38:28,204 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:28,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:28,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1299084994, now seen corresponding path program 1 times [2023-12-19 01:38:28,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:28,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393469430] [2023-12-19 01:38:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:28,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 01:38:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:38:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-19 01:38:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-19 01:38:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-19 01:38:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-19 01:38:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-19 01:38:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-19 01:38:28,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:28,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393469430] [2023-12-19 01:38:28,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393469430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:28,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:28,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:28,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840493016] [2023-12-19 01:38:28,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:28,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:28,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:28,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:28,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:28,324 INFO L87 Difference]: Start difference. First operand 1744 states and 2235 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) [2023-12-19 01:38:29,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:29,231 INFO L93 Difference]: Finished difference Result 2909 states and 3637 transitions. [2023-12-19 01:38:29,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 01:38:29,231 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 145 [2023-12-19 01:38:29,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:29,235 INFO L225 Difference]: With dead ends: 2909 [2023-12-19 01:38:29,236 INFO L226 Difference]: Without dead ends: 1657 [2023-12-19 01:38:29,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:38:29,239 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 648 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:29,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1856 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 01:38:29,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2023-12-19 01:38:29,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1518. [2023-12-19 01:38:29,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1243 states have (on average 1.3185840707964602) internal successors, (1639), 1257 states have internal predecessors, (1639), 142 states have call successors, (142), 99 states have call predecessors, (142), 131 states have return successors, (187), 162 states have call predecessors, (187), 139 states have call successors, (187) [2023-12-19 01:38:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 1968 transitions. [2023-12-19 01:38:29,329 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 1968 transitions. Word has length 145 [2023-12-19 01:38:29,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:29,329 INFO L495 AbstractCegarLoop]: Abstraction has 1518 states and 1968 transitions. [2023-12-19 01:38:29,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-12-19 01:38:29,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 1968 transitions. [2023-12-19 01:38:29,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-19 01:38:29,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:29,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:29,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:38:29,332 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:29,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:29,333 INFO L85 PathProgramCache]: Analyzing trace with hash -162776221, now seen corresponding path program 1 times [2023-12-19 01:38:29,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:29,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041048532] [2023-12-19 01:38:29,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:29,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-19 01:38:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-19 01:38:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-19 01:38:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 01:38:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-19 01:38:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-19 01:38:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-19 01:38:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-19 01:38:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 01:38:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-19 01:38:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-19 01:38:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-19 01:38:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-19 01:38:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-19 01:38:29,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:29,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041048532] [2023-12-19 01:38:29,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041048532] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 01:38:29,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033203737] [2023-12-19 01:38:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:29,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:38:29,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:38:29,568 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 01:38:29,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 01:38:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:29,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 01:38:29,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 01:38:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 01:38:29,900 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 01:38:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-19 01:38:30,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033203737] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 01:38:30,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 01:38:30,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-12-19 01:38:30,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737203075] [2023-12-19 01:38:30,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 01:38:30,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 01:38:30,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:30,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 01:38:30,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-19 01:38:30,098 INFO L87 Difference]: Start difference. First operand 1518 states and 1968 transitions. Second operand has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2023-12-19 01:38:31,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:31,469 INFO L93 Difference]: Finished difference Result 3163 states and 4021 transitions. [2023-12-19 01:38:31,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-19 01:38:31,470 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 147 [2023-12-19 01:38:31,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:31,476 INFO L225 Difference]: With dead ends: 3163 [2023-12-19 01:38:31,476 INFO L226 Difference]: Without dead ends: 1886 [2023-12-19 01:38:31,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 328 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2023-12-19 01:38:31,480 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1681 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 1755 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:31,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 2287 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 01:38:31,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2023-12-19 01:38:31,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1778. [2023-12-19 01:38:31,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1428 states have (on average 1.276610644257703) internal successors, (1823), 1443 states have internal predecessors, (1823), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2023-12-19 01:38:31,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2261 transitions. [2023-12-19 01:38:31,593 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2261 transitions. Word has length 147 [2023-12-19 01:38:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:31,594 INFO L495 AbstractCegarLoop]: Abstraction has 1778 states and 2261 transitions. [2023-12-19 01:38:31,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2023-12-19 01:38:31,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2261 transitions. [2023-12-19 01:38:31,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:31,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:31,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:31,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 01:38:31,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 01:38:31,804 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:31,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:31,804 INFO L85 PathProgramCache]: Analyzing trace with hash 869264947, now seen corresponding path program 1 times [2023-12-19 01:38:31,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:31,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753533845] [2023-12-19 01:38:31,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:31,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:31,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:31,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:31,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:32,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:32,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:32,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753533845] [2023-12-19 01:38:32,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753533845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:32,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:32,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 01:38:32,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280612251] [2023-12-19 01:38:32,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:32,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 01:38:32,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:32,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 01:38:32,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 01:38:32,013 INFO L87 Difference]: Start difference. First operand 1778 states and 2261 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:34,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:34,072 INFO L93 Difference]: Finished difference Result 2252 states and 3054 transitions. [2023-12-19 01:38:34,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:34,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:38:34,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:34,078 INFO L225 Difference]: With dead ends: 2252 [2023-12-19 01:38:34,078 INFO L226 Difference]: Without dead ends: 1908 [2023-12-19 01:38:34,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:38:34,080 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 1078 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:34,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 843 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 01:38:34,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2023-12-19 01:38:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1778. [2023-12-19 01:38:34,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1428 states have (on average 1.2759103641456582) internal successors, (1822), 1443 states have internal predecessors, (1822), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2023-12-19 01:38:34,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2260 transitions. [2023-12-19 01:38:34,339 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2260 transitions. Word has length 162 [2023-12-19 01:38:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:34,339 INFO L495 AbstractCegarLoop]: Abstraction has 1778 states and 2260 transitions. [2023-12-19 01:38:34,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:34,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2260 transitions. [2023-12-19 01:38:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:34,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:34,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:34,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 01:38:34,342 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:34,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:34,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2020510671, now seen corresponding path program 1 times [2023-12-19 01:38:34,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:34,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450917996] [2023-12-19 01:38:34,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:34,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:34,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:34,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:34,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:34,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:34,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:34,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450917996] [2023-12-19 01:38:34,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450917996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:34,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:34,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:34,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534347372] [2023-12-19 01:38:34,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:34,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:34,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:34,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:34,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:34,527 INFO L87 Difference]: Start difference. First operand 1778 states and 2260 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:37,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:37,390 INFO L93 Difference]: Finished difference Result 2310 states and 3155 transitions. [2023-12-19 01:38:37,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 01:38:37,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:38:37,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:37,395 INFO L225 Difference]: With dead ends: 2310 [2023-12-19 01:38:37,395 INFO L226 Difference]: Without dead ends: 1974 [2023-12-19 01:38:37,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-19 01:38:37,397 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1349 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:37,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 1465 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 01:38:37,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2023-12-19 01:38:37,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1780. [2023-12-19 01:38:37,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1430 states have (on average 1.2748251748251749) internal successors, (1823), 1445 states have internal predecessors, (1823), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2023-12-19 01:38:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2261 transitions. [2023-12-19 01:38:37,614 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2261 transitions. Word has length 162 [2023-12-19 01:38:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:37,614 INFO L495 AbstractCegarLoop]: Abstraction has 1780 states and 2261 transitions. [2023-12-19 01:38:37,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2261 transitions. [2023-12-19 01:38:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:37,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:37,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:37,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 01:38:37,617 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:37,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:37,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1528926099, now seen corresponding path program 1 times [2023-12-19 01:38:37,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:37,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467670412] [2023-12-19 01:38:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:37,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:37,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:37,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:37,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:37,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:37,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:37,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:37,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467670412] [2023-12-19 01:38:37,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467670412] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:37,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:37,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 01:38:37,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194063901] [2023-12-19 01:38:37,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:37,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 01:38:37,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:37,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 01:38:37,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-19 01:38:37,874 INFO L87 Difference]: Start difference. First operand 1780 states and 2261 transitions. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:42,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:42,224 INFO L93 Difference]: Finished difference Result 2805 states and 3993 transitions. [2023-12-19 01:38:42,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 01:38:42,224 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:38:42,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:42,231 INFO L225 Difference]: With dead ends: 2805 [2023-12-19 01:38:42,232 INFO L226 Difference]: Without dead ends: 2470 [2023-12-19 01:38:42,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-12-19 01:38:42,234 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1935 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 3732 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 3887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 3732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:42,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1966 Valid, 1894 Invalid, 3887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 3732 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 01:38:42,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2023-12-19 01:38:42,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2137. [2023-12-19 01:38:42,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 1759 states have (on average 1.343376918703809) internal successors, (2363), 1775 states have internal predecessors, (2363), 203 states have call successors, (203), 143 states have call predecessors, (203), 173 states have return successors, (280), 219 states have call predecessors, (280), 200 states have call successors, (280) [2023-12-19 01:38:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 2846 transitions. [2023-12-19 01:38:42,463 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 2846 transitions. Word has length 162 [2023-12-19 01:38:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:42,464 INFO L495 AbstractCegarLoop]: Abstraction has 2137 states and 2846 transitions. [2023-12-19 01:38:42,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 2846 transitions. [2023-12-19 01:38:42,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:42,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:42,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:42,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 01:38:42,467 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:42,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:42,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1350369745, now seen corresponding path program 1 times [2023-12-19 01:38:42,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:42,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710989343] [2023-12-19 01:38:42,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:42,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:42,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:42,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:42,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:42,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:42,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:42,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710989343] [2023-12-19 01:38:42,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710989343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:42,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:42,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 01:38:42,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188920239] [2023-12-19 01:38:42,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:42,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 01:38:42,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:42,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 01:38:42,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-19 01:38:42,733 INFO L87 Difference]: Start difference. First operand 2137 states and 2846 transitions. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:48,101 INFO L93 Difference]: Finished difference Result 3680 states and 5454 transitions. [2023-12-19 01:38:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 01:38:48,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:38:48,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:48,109 INFO L225 Difference]: With dead ends: 3680 [2023-12-19 01:38:48,109 INFO L226 Difference]: Without dead ends: 2988 [2023-12-19 01:38:48,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2023-12-19 01:38:48,114 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 1886 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 5650 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 3253 SdHoareTripleChecker+Invalid, 5754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 5650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:48,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1917 Valid, 3253 Invalid, 5754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 5650 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 01:38:48,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2023-12-19 01:38:48,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 2472. [2023-12-19 01:38:48,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2066 states have (on average 1.3818973862536301) internal successors, (2855), 2083 states have internal predecessors, (2855), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2023-12-19 01:38:48,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3382 transitions. [2023-12-19 01:38:48,405 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3382 transitions. Word has length 162 [2023-12-19 01:38:48,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:48,405 INFO L495 AbstractCegarLoop]: Abstraction has 2472 states and 3382 transitions. [2023-12-19 01:38:48,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:48,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3382 transitions. [2023-12-19 01:38:48,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:48,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:48,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:48,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 01:38:48,409 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:48,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:48,409 INFO L85 PathProgramCache]: Analyzing trace with hash 739331123, now seen corresponding path program 1 times [2023-12-19 01:38:48,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:48,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311763602] [2023-12-19 01:38:48,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:48,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:48,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:48,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:48,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:48,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:48,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:48,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:48,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311763602] [2023-12-19 01:38:48,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311763602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:48,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:48,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:48,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490341957] [2023-12-19 01:38:48,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:48,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:48,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:48,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:48,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:48,662 INFO L87 Difference]: Start difference. First operand 2472 states and 3382 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:50,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:50,870 INFO L93 Difference]: Finished difference Result 3971 states and 5883 transitions. [2023-12-19 01:38:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:50,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:38:50,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:50,879 INFO L225 Difference]: With dead ends: 3971 [2023-12-19 01:38:50,879 INFO L226 Difference]: Without dead ends: 2944 [2023-12-19 01:38:50,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:38:50,883 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1286 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 2091 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:50,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 1277 Invalid, 2195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2091 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 01:38:50,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2023-12-19 01:38:51,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2472. [2023-12-19 01:38:51,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2066 states have (on average 1.3804453049370764) internal successors, (2852), 2083 states have internal predecessors, (2852), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2023-12-19 01:38:51,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3379 transitions. [2023-12-19 01:38:51,153 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3379 transitions. Word has length 162 [2023-12-19 01:38:51,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:51,154 INFO L495 AbstractCegarLoop]: Abstraction has 2472 states and 3379 transitions. [2023-12-19 01:38:51,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:51,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3379 transitions. [2023-12-19 01:38:51,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:51,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:51,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:51,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 01:38:51,157 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:51,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:51,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1396552079, now seen corresponding path program 1 times [2023-12-19 01:38:51,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:51,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603563837] [2023-12-19 01:38:51,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:51,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:51,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:51,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:51,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:51,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:51,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:51,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:51,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603563837] [2023-12-19 01:38:51,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603563837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:51,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:51,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:51,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483331274] [2023-12-19 01:38:51,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:51,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:51,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:51,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:51,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:51,391 INFO L87 Difference]: Start difference. First operand 2472 states and 3379 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:53,207 INFO L93 Difference]: Finished difference Result 3967 states and 5866 transitions. [2023-12-19 01:38:53,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:53,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:38:53,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:53,216 INFO L225 Difference]: With dead ends: 3967 [2023-12-19 01:38:53,216 INFO L226 Difference]: Without dead ends: 2940 [2023-12-19 01:38:53,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:38:53,220 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1484 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:53,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1067 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:38:53,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2023-12-19 01:38:53,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2472. [2023-12-19 01:38:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2066 states have (on average 1.3789932236205227) internal successors, (2849), 2083 states have internal predecessors, (2849), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2023-12-19 01:38:53,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3376 transitions. [2023-12-19 01:38:53,491 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3376 transitions. Word has length 162 [2023-12-19 01:38:53,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:53,491 INFO L495 AbstractCegarLoop]: Abstraction has 2472 states and 3376 transitions. [2023-12-19 01:38:53,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:53,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3376 transitions. [2023-12-19 01:38:53,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:53,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:53,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:53,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 01:38:53,495 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:53,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:53,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1326904205, now seen corresponding path program 1 times [2023-12-19 01:38:53,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:53,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002319586] [2023-12-19 01:38:53,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:53,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:53,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:53,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:53,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:53,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:53,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:53,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002319586] [2023-12-19 01:38:53,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002319586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:53,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:53,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:53,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962731454] [2023-12-19 01:38:53,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:53,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:53,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:53,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:53,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:53,736 INFO L87 Difference]: Start difference. First operand 2472 states and 3376 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:55,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:38:55,916 INFO L93 Difference]: Finished difference Result 3963 states and 5849 transitions. [2023-12-19 01:38:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:38:55,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:38:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:38:55,929 INFO L225 Difference]: With dead ends: 3963 [2023-12-19 01:38:55,929 INFO L226 Difference]: Without dead ends: 2936 [2023-12-19 01:38:55,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:38:55,934 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1282 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:38:55,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 1277 Invalid, 2163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2059 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 01:38:55,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2936 states. [2023-12-19 01:38:56,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2936 to 2472. [2023-12-19 01:38:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 2066 states have (on average 1.377541142303969) internal successors, (2846), 2083 states have internal predecessors, (2846), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2023-12-19 01:38:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3373 transitions. [2023-12-19 01:38:56,203 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3373 transitions. Word has length 162 [2023-12-19 01:38:56,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:38:56,203 INFO L495 AbstractCegarLoop]: Abstraction has 2472 states and 3373 transitions. [2023-12-19 01:38:56,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:38:56,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3373 transitions. [2023-12-19 01:38:56,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:38:56,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:38:56,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:38:56,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 01:38:56,206 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:38:56,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:38:56,207 INFO L85 PathProgramCache]: Analyzing trace with hash -909015503, now seen corresponding path program 1 times [2023-12-19 01:38:56,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:38:56,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930222358] [2023-12-19 01:38:56,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:38:56,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:38:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:56,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:38:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:56,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:38:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:38:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:56,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:38:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:56,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:38:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:38:56,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:38:56,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:38:56,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930222358] [2023-12-19 01:38:56,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930222358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:38:56,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:38:56,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:38:56,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954721366] [2023-12-19 01:38:56,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:38:56,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:38:56,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:38:56,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:38:56,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:38:56,449 INFO L87 Difference]: Start difference. First operand 2472 states and 3373 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:00,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:00,516 INFO L93 Difference]: Finished difference Result 4890 states and 7343 transitions. [2023-12-19 01:39:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:39:00,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:39:00,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:00,536 INFO L225 Difference]: With dead ends: 4890 [2023-12-19 01:39:00,536 INFO L226 Difference]: Without dead ends: 3863 [2023-12-19 01:39:00,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:39:00,541 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 1708 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 3884 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 3986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:00,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 2277 Invalid, 3986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3884 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 01:39:00,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2023-12-19 01:39:00,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3146. [2023-12-19 01:39:00,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 2684 states have (on average 1.4280923994038748) internal successors, (3833), 2703 states have internal predecessors, (3833), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2023-12-19 01:39:00,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4452 transitions. [2023-12-19 01:39:00,864 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4452 transitions. Word has length 162 [2023-12-19 01:39:00,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:00,865 INFO L495 AbstractCegarLoop]: Abstraction has 3146 states and 4452 transitions. [2023-12-19 01:39:00,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:00,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4452 transitions. [2023-12-19 01:39:00,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:39:00,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:00,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:00,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 01:39:00,868 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:00,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:00,869 INFO L85 PathProgramCache]: Analyzing trace with hash 489938099, now seen corresponding path program 1 times [2023-12-19 01:39:00,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:00,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945155718] [2023-12-19 01:39:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:00,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:00,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:01,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:39:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:01,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:39:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:01,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:39:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:01,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:39:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:39:01,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945155718] [2023-12-19 01:39:01,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945155718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:01,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:01,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:01,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179105869] [2023-12-19 01:39:01,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:01,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:01,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:01,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:01,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:01,134 INFO L87 Difference]: Start difference. First operand 3146 states and 4452 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:03,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:03,276 INFO L93 Difference]: Finished difference Result 5549 states and 8408 transitions. [2023-12-19 01:39:03,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:39:03,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:39:03,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:03,287 INFO L225 Difference]: With dead ends: 5549 [2023-12-19 01:39:03,287 INFO L226 Difference]: Without dead ends: 3848 [2023-12-19 01:39:03,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:39:03,292 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 1355 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:03,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 1276 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 01:39:03,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3848 states. [2023-12-19 01:39:03,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3848 to 3146. [2023-12-19 01:39:03,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3146 states, 2684 states have (on average 1.4262295081967213) internal successors, (3828), 2703 states have internal predecessors, (3828), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2023-12-19 01:39:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4447 transitions. [2023-12-19 01:39:03,564 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4447 transitions. Word has length 162 [2023-12-19 01:39:03,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:03,564 INFO L495 AbstractCegarLoop]: Abstraction has 3146 states and 4447 transitions. [2023-12-19 01:39:03,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:03,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4447 transitions. [2023-12-19 01:39:03,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:39:03,567 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:03,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:03,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 01:39:03,567 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:03,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:03,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1127502351, now seen corresponding path program 1 times [2023-12-19 01:39:03,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:03,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682896453] [2023-12-19 01:39:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:03,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:03,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:03,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:39:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:03,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:39:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:03,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:39:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:03,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:39:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:03,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:39:03,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:03,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682896453] [2023-12-19 01:39:03,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682896453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:03,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:03,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:03,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772172937] [2023-12-19 01:39:03,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:03,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:03,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:03,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:03,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:03,783 INFO L87 Difference]: Start difference. First operand 3146 states and 4447 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:07,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:07,647 INFO L93 Difference]: Finished difference Result 7346 states and 11290 transitions. [2023-12-19 01:39:07,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:39:07,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:39:07,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:07,658 INFO L225 Difference]: With dead ends: 7346 [2023-12-19 01:39:07,658 INFO L226 Difference]: Without dead ends: 5645 [2023-12-19 01:39:07,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:39:07,662 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 1706 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 3841 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:07,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 2277 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3841 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 01:39:07,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2023-12-19 01:39:08,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 4496. [2023-12-19 01:39:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4496 states, 3922 states have (on average 1.477817440081591) internal successors, (5796), 3945 states have internal predecessors, (5796), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2023-12-19 01:39:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4496 states to 4496 states and 6605 transitions. [2023-12-19 01:39:08,064 INFO L78 Accepts]: Start accepts. Automaton has 4496 states and 6605 transitions. Word has length 162 [2023-12-19 01:39:08,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:08,065 INFO L495 AbstractCegarLoop]: Abstraction has 4496 states and 6605 transitions. [2023-12-19 01:39:08,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4496 states and 6605 transitions. [2023-12-19 01:39:08,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:39:08,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:08,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:08,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 01:39:08,069 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:08,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:08,069 INFO L85 PathProgramCache]: Analyzing trace with hash -764035853, now seen corresponding path program 1 times [2023-12-19 01:39:08,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:08,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261577587] [2023-12-19 01:39:08,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:08,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:08,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:08,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:39:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:08,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:39:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:08,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:39:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:08,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:39:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:08,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:39:08,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:08,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261577587] [2023-12-19 01:39:08,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261577587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:08,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:08,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:08,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232792193] [2023-12-19 01:39:08,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:08,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:08,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:08,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:08,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:08,310 INFO L87 Difference]: Start difference. First operand 4496 states and 6605 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:12,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:12,340 INFO L93 Difference]: Finished difference Result 12256 states and 19222 transitions. [2023-12-19 01:39:12,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-19 01:39:12,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:39:12,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:12,361 INFO L225 Difference]: With dead ends: 12256 [2023-12-19 01:39:12,362 INFO L226 Difference]: Without dead ends: 9205 [2023-12-19 01:39:12,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-19 01:39:12,375 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 1701 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 3814 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 3916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:12,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 2277 Invalid, 3916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3814 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 01:39:12,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9205 states. [2023-12-19 01:39:12,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9205 to 7210. [2023-12-19 01:39:12,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7210 states, 6412 states have (on average 1.5215221459762944) internal successors, (9756), 6443 states have internal predecessors, (9756), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2023-12-19 01:39:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7210 states to 7210 states and 10963 transitions. [2023-12-19 01:39:12,952 INFO L78 Accepts]: Start accepts. Automaton has 7210 states and 10963 transitions. Word has length 162 [2023-12-19 01:39:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:12,952 INFO L495 AbstractCegarLoop]: Abstraction has 7210 states and 10963 transitions. [2023-12-19 01:39:12,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand 7210 states and 10963 transitions. [2023-12-19 01:39:12,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:39:12,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:12,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:12,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 01:39:12,957 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:12,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:12,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1308908427, now seen corresponding path program 1 times [2023-12-19 01:39:12,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:12,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228144362] [2023-12-19 01:39:12,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:12,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:13,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:13,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:39:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:39:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:39:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:39:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:39:13,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228144362] [2023-12-19 01:39:13,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228144362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:13,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:13,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:13,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800499456] [2023-12-19 01:39:13,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:13,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:13,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:13,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:13,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:13,198 INFO L87 Difference]: Start difference. First operand 7210 states and 10963 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:15,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:15,477 INFO L93 Difference]: Finished difference Result 15041 states and 23793 transitions. [2023-12-19 01:39:15,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:39:15,478 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:39:15,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:15,515 INFO L225 Difference]: With dead ends: 15041 [2023-12-19 01:39:15,515 INFO L226 Difference]: Without dead ends: 9276 [2023-12-19 01:39:15,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:39:15,536 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1285 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:15,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1277 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1984 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 01:39:15,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9276 states. [2023-12-19 01:39:16,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9276 to 7210. [2023-12-19 01:39:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7210 states, 6412 states have (on average 1.5188708671241422) internal successors, (9739), 6443 states have internal predecessors, (9739), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2023-12-19 01:39:16,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7210 states to 7210 states and 10946 transitions. [2023-12-19 01:39:16,110 INFO L78 Accepts]: Start accepts. Automaton has 7210 states and 10946 transitions. Word has length 162 [2023-12-19 01:39:16,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:16,111 INFO L495 AbstractCegarLoop]: Abstraction has 7210 states and 10946 transitions. [2023-12-19 01:39:16,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:16,111 INFO L276 IsEmpty]: Start isEmpty. Operand 7210 states and 10946 transitions. [2023-12-19 01:39:16,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:39:16,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:16,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:16,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 01:39:16,115 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:16,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:16,116 INFO L85 PathProgramCache]: Analyzing trace with hash -633748301, now seen corresponding path program 1 times [2023-12-19 01:39:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:16,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853234444] [2023-12-19 01:39:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:16,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:16,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:16,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:39:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:16,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:39:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:16,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:39:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:16,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:39:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:39:16,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:16,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853234444] [2023-12-19 01:39:16,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853234444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:16,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:16,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:16,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615668352] [2023-12-19 01:39:16,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:16,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:16,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:16,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:16,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:16,336 INFO L87 Difference]: Start difference. First operand 7210 states and 10946 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:18,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:18,361 INFO L93 Difference]: Finished difference Result 15023 states and 23706 transitions. [2023-12-19 01:39:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:39:18,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:39:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:18,392 INFO L225 Difference]: With dead ends: 15023 [2023-12-19 01:39:18,392 INFO L226 Difference]: Without dead ends: 9258 [2023-12-19 01:39:18,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:39:18,405 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1483 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:18,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1067 Invalid, 1933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 01:39:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9258 states. [2023-12-19 01:39:18,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9258 to 7210. [2023-12-19 01:39:18,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7210 states, 6412 states have (on average 1.51621958827199) internal successors, (9722), 6443 states have internal predecessors, (9722), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2023-12-19 01:39:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7210 states to 7210 states and 10929 transitions. [2023-12-19 01:39:18,981 INFO L78 Accepts]: Start accepts. Automaton has 7210 states and 10929 transitions. Word has length 162 [2023-12-19 01:39:18,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:18,981 INFO L495 AbstractCegarLoop]: Abstraction has 7210 states and 10929 transitions. [2023-12-19 01:39:18,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:18,982 INFO L276 IsEmpty]: Start isEmpty. Operand 7210 states and 10929 transitions. [2023-12-19 01:39:18,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:39:18,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:18,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:18,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 01:39:18,986 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:18,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:18,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1581800267, now seen corresponding path program 1 times [2023-12-19 01:39:18,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:18,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344065311] [2023-12-19 01:39:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:18,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:19,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:39:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:39:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:19,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:39:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:19,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:39:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:39:19,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:19,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344065311] [2023-12-19 01:39:19,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344065311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:19,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:19,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:19,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206415532] [2023-12-19 01:39:19,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:19,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:19,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:19,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:19,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:19,252 INFO L87 Difference]: Start difference. First operand 7210 states and 10929 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:24,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:24,383 INFO L93 Difference]: Finished difference Result 24684 states and 39092 transitions. [2023-12-19 01:39:24,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:39:24,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:39:24,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:24,434 INFO L225 Difference]: With dead ends: 24684 [2023-12-19 01:39:24,435 INFO L226 Difference]: Without dead ends: 18919 [2023-12-19 01:39:24,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:39:24,454 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 1796 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 4455 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 4559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 4455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:24,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1824 Valid, 2270 Invalid, 4559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 4455 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 01:39:24,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18919 states. [2023-12-19 01:39:25,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18919 to 12653. [2023-12-19 01:39:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12653 states, 11423 states have (on average 1.5449531646677754) internal successors, (17648), 11470 states have internal predecessors, (17648), 838 states have call successors, (838), 329 states have call predecessors, (838), 390 states have return successors, (1187), 885 states have call predecessors, (1187), 835 states have call successors, (1187) [2023-12-19 01:39:25,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12653 states to 12653 states and 19673 transitions. [2023-12-19 01:39:25,335 INFO L78 Accepts]: Start accepts. Automaton has 12653 states and 19673 transitions. Word has length 162 [2023-12-19 01:39:25,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:25,335 INFO L495 AbstractCegarLoop]: Abstraction has 12653 states and 19673 transitions. [2023-12-19 01:39:25,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand 12653 states and 19673 transitions. [2023-12-19 01:39:25,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:39:25,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:25,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:25,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 01:39:25,344 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:25,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:25,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2128395379, now seen corresponding path program 1 times [2023-12-19 01:39:25,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:25,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906520427] [2023-12-19 01:39:25,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:25,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:39:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:39:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:39:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:39:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:25,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:39:25,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:25,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906520427] [2023-12-19 01:39:25,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906520427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:25,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:25,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:25,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620961345] [2023-12-19 01:39:25,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:25,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:25,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:25,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:25,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:25,602 INFO L87 Difference]: Start difference. First operand 12653 states and 19673 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:30,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:30,536 INFO L93 Difference]: Finished difference Result 46541 states and 74446 transitions. [2023-12-19 01:39:30,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:39:30,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:39:30,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:30,631 INFO L225 Difference]: With dead ends: 46541 [2023-12-19 01:39:30,631 INFO L226 Difference]: Without dead ends: 35333 [2023-12-19 01:39:30,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:39:30,662 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 2083 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 3727 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 3832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:30,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2125 Valid, 2266 Invalid, 3832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3727 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 01:39:30,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35333 states. [2023-12-19 01:39:32,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35333 to 23278. [2023-12-19 01:39:32,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23278 states, 21200 states have (on average 1.5600943396226414) internal successors, (33074), 21279 states have internal predecessors, (33074), 1462 states have call successors, (1462), 521 states have call predecessors, (1462), 614 states have return successors, (2329), 1541 states have call predecessors, (2329), 1459 states have call successors, (2329) [2023-12-19 01:39:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23278 states to 23278 states and 36865 transitions. [2023-12-19 01:39:32,399 INFO L78 Accepts]: Start accepts. Automaton has 23278 states and 36865 transitions. Word has length 162 [2023-12-19 01:39:32,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:32,399 INFO L495 AbstractCegarLoop]: Abstraction has 23278 states and 36865 transitions. [2023-12-19 01:39:32,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:32,399 INFO L276 IsEmpty]: Start isEmpty. Operand 23278 states and 36865 transitions. [2023-12-19 01:39:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:39:32,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:32,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:32,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-19 01:39:32,409 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:32,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:32,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1693889781, now seen corresponding path program 1 times [2023-12-19 01:39:32,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:32,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891537081] [2023-12-19 01:39:32,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:32,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:32,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:39:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:32,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:39:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:32,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:39:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:32,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:39:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:39:32,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:32,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891537081] [2023-12-19 01:39:32,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891537081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:32,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:32,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:32,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823099463] [2023-12-19 01:39:32,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:32,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:32,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:32,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:32,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:32,629 INFO L87 Difference]: Start difference. First operand 23278 states and 36865 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:38,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:38,659 INFO L93 Difference]: Finished difference Result 88524 states and 142980 transitions. [2023-12-19 01:39:38,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:39:38,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:39:38,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:38,869 INFO L225 Difference]: With dead ends: 88524 [2023-12-19 01:39:38,869 INFO L226 Difference]: Without dead ends: 66691 [2023-12-19 01:39:38,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:39:38,941 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1857 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 3771 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 3921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 3771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:38,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1885 Valid, 1533 Invalid, 3921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 3771 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 01:39:38,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66691 states. [2023-12-19 01:39:41,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66691 to 44783. [2023-12-19 01:39:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44783 states, 41041 states have (on average 1.57003971638118) internal successors, (64436), 41184 states have internal predecessors, (64436), 2678 states have call successors, (2678), 905 states have call predecessors, (2678), 1062 states have return successors, (5067), 2821 states have call predecessors, (5067), 2675 states have call successors, (5067) [2023-12-19 01:39:42,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44783 states to 44783 states and 72181 transitions. [2023-12-19 01:39:42,133 INFO L78 Accepts]: Start accepts. Automaton has 44783 states and 72181 transitions. Word has length 162 [2023-12-19 01:39:42,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:42,133 INFO L495 AbstractCegarLoop]: Abstraction has 44783 states and 72181 transitions. [2023-12-19 01:39:42,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:42,133 INFO L276 IsEmpty]: Start isEmpty. Operand 44783 states and 72181 transitions. [2023-12-19 01:39:42,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:39:42,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:42,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:42,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-19 01:39:42,154 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:42,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:42,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1264231475, now seen corresponding path program 1 times [2023-12-19 01:39:42,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:42,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502718171] [2023-12-19 01:39:42,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:42,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:42,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:42,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:39:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:39:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:42,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:39:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:42,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:39:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:39:42,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:42,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502718171] [2023-12-19 01:39:42,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502718171] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:42,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:42,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:42,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612517069] [2023-12-19 01:39:42,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:42,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:42,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:42,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:42,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:42,401 INFO L87 Difference]: Start difference. First operand 44783 states and 72181 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:50,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:39:50,395 INFO L93 Difference]: Finished difference Result 173259 states and 283018 transitions. [2023-12-19 01:39:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:39:50,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:39:50,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:39:50,848 INFO L225 Difference]: With dead ends: 173259 [2023-12-19 01:39:50,848 INFO L226 Difference]: Without dead ends: 129921 [2023-12-19 01:39:50,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:39:50,970 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 2018 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 3697 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 3802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:39:50,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2060 Valid, 2270 Invalid, 3802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3697 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 01:39:51,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129921 states. [2023-12-19 01:39:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129921 to 87792. [2023-12-19 01:39:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87792 states, 80786 states have (on average 1.5755947812739832) internal successors, (127286), 81057 states have internal predecessors, (127286), 5046 states have call successors, (5046), 1673 states have call predecessors, (5046), 1958 states have return successors, (11937), 5317 states have call predecessors, (11937), 5043 states have call successors, (11937) [2023-12-19 01:39:56,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87792 states to 87792 states and 144269 transitions. [2023-12-19 01:39:56,753 INFO L78 Accepts]: Start accepts. Automaton has 87792 states and 144269 transitions. Word has length 162 [2023-12-19 01:39:56,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:39:56,753 INFO L495 AbstractCegarLoop]: Abstraction has 87792 states and 144269 transitions. [2023-12-19 01:39:56,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:39:56,754 INFO L276 IsEmpty]: Start isEmpty. Operand 87792 states and 144269 transitions. [2023-12-19 01:39:56,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:39:56,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:39:56,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:39:56,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-19 01:39:56,791 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:39:56,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:39:56,792 INFO L85 PathProgramCache]: Analyzing trace with hash 557634869, now seen corresponding path program 1 times [2023-12-19 01:39:56,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:39:56,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795105170] [2023-12-19 01:39:56,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:39:56,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:39:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:56,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:39:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:56,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:39:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:56,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:39:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:39:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:57,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:39:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:39:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:39:57,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:39:57,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795105170] [2023-12-19 01:39:57,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795105170] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:39:57,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:39:57,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:39:57,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597024] [2023-12-19 01:39:57,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:39:57,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:39:57,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:39:57,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:39:57,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:39:57,005 INFO L87 Difference]: Start difference. First operand 87792 states and 144269 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:40:03,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:40:03,650 INFO L93 Difference]: Finished difference Result 200735 states and 336759 transitions. [2023-12-19 01:40:03,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 01:40:03,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:40:03,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:40:04,237 INFO L225 Difference]: With dead ends: 200735 [2023-12-19 01:40:04,238 INFO L226 Difference]: Without dead ends: 114388 [2023-12-19 01:40:04,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-19 01:40:04,490 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1487 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 01:40:04,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1066 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1730 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 01:40:04,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114388 states. [2023-12-19 01:40:09,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114388 to 87792. [2023-12-19 01:40:09,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87792 states, 80786 states have (on average 1.572413536998985) internal successors, (127029), 81057 states have internal predecessors, (127029), 5046 states have call successors, (5046), 1673 states have call predecessors, (5046), 1958 states have return successors, (11937), 5317 states have call predecessors, (11937), 5043 states have call successors, (11937) [2023-12-19 01:40:10,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87792 states to 87792 states and 144012 transitions. [2023-12-19 01:40:10,203 INFO L78 Accepts]: Start accepts. Automaton has 87792 states and 144012 transitions. Word has length 162 [2023-12-19 01:40:10,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:40:10,205 INFO L495 AbstractCegarLoop]: Abstraction has 87792 states and 144012 transitions. [2023-12-19 01:40:10,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:40:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand 87792 states and 144012 transitions. [2023-12-19 01:40:10,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:40:10,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:40:10,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:40:10,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-19 01:40:10,241 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:40:10,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:40:10,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1419468471, now seen corresponding path program 1 times [2023-12-19 01:40:10,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:40:10,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761255809] [2023-12-19 01:40:10,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:40:10,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:40:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:10,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:40:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:10,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:40:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:40:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:10,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:40:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:10,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:40:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:40:10,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:40:10,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761255809] [2023-12-19 01:40:10,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761255809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:40:10,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:40:10,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:40:10,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250237803] [2023-12-19 01:40:10,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:40:10,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:40:10,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:40:10,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:40:10,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:40:10,698 INFO L87 Difference]: Start difference. First operand 87792 states and 144012 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:40:23,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:40:23,200 INFO L93 Difference]: Finished difference Result 333638 states and 553300 transitions. [2023-12-19 01:40:23,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:40:23,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:40:23,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:40:24,516 INFO L225 Difference]: With dead ends: 333638 [2023-12-19 01:40:24,517 INFO L226 Difference]: Without dead ends: 247291 [2023-12-19 01:40:24,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:40:24,965 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 1901 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 3645 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1943 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 01:40:24,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1943 Valid, 2270 Invalid, 3750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3645 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 01:40:25,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247291 states. [2023-12-19 01:40:34,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247291 to 174323. [2023-12-19 01:40:35,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174323 states, 160917 states have (on average 1.575340082154154) internal successors, (253499), 161444 states have internal predecessors, (253499), 9654 states have call successors, (9654), 3209 states have call predecessors, (9654), 3750 states have return successors, (29923), 10181 states have call predecessors, (29923), 9651 states have call successors, (29923) [2023-12-19 01:40:36,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174323 states to 174323 states and 293076 transitions. [2023-12-19 01:40:36,376 INFO L78 Accepts]: Start accepts. Automaton has 174323 states and 293076 transitions. Word has length 162 [2023-12-19 01:40:36,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:40:36,376 INFO L495 AbstractCegarLoop]: Abstraction has 174323 states and 293076 transitions. [2023-12-19 01:40:36,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:40:36,377 INFO L276 IsEmpty]: Start isEmpty. Operand 174323 states and 293076 transitions. [2023-12-19 01:40:36,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:40:36,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:40:36,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:40:36,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-19 01:40:36,463 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:40:36,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:40:36,463 INFO L85 PathProgramCache]: Analyzing trace with hash -630940427, now seen corresponding path program 1 times [2023-12-19 01:40:36,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:40:36,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620450002] [2023-12-19 01:40:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:40:36,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:40:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:36,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:40:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:36,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:40:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:36,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:40:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:36,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:40:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:36,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:40:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:40:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:40:36,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:40:36,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620450002] [2023-12-19 01:40:36,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620450002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:40:36,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:40:36,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:40:36,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288331166] [2023-12-19 01:40:36,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:40:36,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:40:36,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:40:36,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:40:36,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:40:36,707 INFO L87 Difference]: Start difference. First operand 174323 states and 293076 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:40:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:40:58,415 INFO L93 Difference]: Finished difference Result 653639 states and 1111902 transitions. [2023-12-19 01:40:58,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 01:40:58,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-19 01:40:58,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:41:01,245 INFO L225 Difference]: With dead ends: 653639 [2023-12-19 01:41:01,245 INFO L226 Difference]: Without dead ends: 480761 [2023-12-19 01:41:02,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-19 01:41:02,131 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 1723 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 4027 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 4131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 4027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 01:41:02,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1751 Valid, 2270 Invalid, 4131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 4027 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 01:41:02,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480761 states. [2023-12-19 01:41:22,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480761 to 347380. [2023-12-19 01:41:22,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347380 states, 321430 states have (on average 1.5771427682543633) internal successors, (506941), 322469 states have internal predecessors, (506941), 18614 states have call successors, (18614), 6281 states have call predecessors, (18614), 7334 states have return successors, (78761), 19653 states have call predecessors, (78761), 18611 states have call successors, (78761) [2023-12-19 01:41:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347380 states to 347380 states and 604316 transitions. [2023-12-19 01:41:25,862 INFO L78 Accepts]: Start accepts. Automaton has 347380 states and 604316 transitions. Word has length 162 [2023-12-19 01:41:25,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:41:25,862 INFO L495 AbstractCegarLoop]: Abstraction has 347380 states and 604316 transitions. [2023-12-19 01:41:25,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-19 01:41:25,863 INFO L276 IsEmpty]: Start isEmpty. Operand 347380 states and 604316 transitions. [2023-12-19 01:41:26,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 01:41:26,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:41:26,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:41:26,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-19 01:41:26,059 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:41:26,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:41:26,059 INFO L85 PathProgramCache]: Analyzing trace with hash -142893321, now seen corresponding path program 1 times [2023-12-19 01:41:26,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:41:26,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582520540] [2023-12-19 01:41:26,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:41:26,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:41:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:26,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 01:41:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-19 01:41:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:26,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-19 01:41:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:26,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-19 01:41:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:26,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-19 01:41:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:41:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:41:26,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:41:26,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582520540] [2023-12-19 01:41:26,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582520540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:41:26,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:41:26,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 01:41:26,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299851384] [2023-12-19 01:41:26,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:41:26,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 01:41:26,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:41:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 01:41:26,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 01:41:26,371 INFO L87 Difference]: Start difference. First operand 347380 states and 604316 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)