/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:47:18,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:47:18,380 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:47:18,383 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:47:18,383 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:47:18,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:47:18,407 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:47:18,407 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:47:18,408 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:47:18,411 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:47:18,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:47:18,412 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:47:18,412 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:47:18,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:47:18,413 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:47:18,413 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:47:18,414 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:47:18,414 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:47:18,415 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:47:18,415 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:47:18,415 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:47:18,415 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:47:18,415 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:47:18,416 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:47:18,416 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:47:18,416 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:47:18,416 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:47:18,416 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:47:18,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:47:18,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:47:18,418 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:47:18,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:47:18,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:47:18,418 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:47:18,418 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:47:18,418 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:47:18,418 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:47:18,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:47:18,418 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:47:18,419 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:47:18,419 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:47:18,419 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:47:18,419 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:47:18,419 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:47:18,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:47:18,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:47:18,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:47:18,659 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:47:18,659 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:47:18,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2023-12-20 14:47:19,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:47:19,943 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:47:19,943 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2023-12-20 14:47:19,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3173b82f7/2c532286f80045ecb2ba322a987f04a1/FLAG7ea42abc2 [2023-12-20 14:47:19,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3173b82f7/2c532286f80045ecb2ba322a987f04a1 [2023-12-20 14:47:19,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:47:19,975 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:47:19,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:47:19,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:47:19,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:47:19,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:47:19" (1/1) ... [2023-12-20 14:47:19,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7505523b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:19, skipping insertion in model container [2023-12-20 14:47:19,984 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:47:19" (1/1) ... [2023-12-20 14:47:20,036 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:47:20,150 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.04.cil-1.c[914,927] [2023-12-20 14:47:20,206 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.04.cil-1.c[7115,7128] [2023-12-20 14:47:20,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:47:20,274 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:47:20,283 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.04.cil-1.c[914,927] [2023-12-20 14:47:20,305 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.04.cil-1.c[7115,7128] [2023-12-20 14:47:20,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:47:20,350 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:47:20,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:20 WrapperNode [2023-12-20 14:47:20,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:47:20,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:47:20,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:47:20,353 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:47:20,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:20" (1/1) ... [2023-12-20 14:47:20,379 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:20" (1/1) ... [2023-12-20 14:47:20,415 INFO L138 Inliner]: procedures = 61, calls = 69, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 588 [2023-12-20 14:47:20,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:47:20,415 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:47:20,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:47:20,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:47:20,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:20" (1/1) ... [2023-12-20 14:47:20,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:20" (1/1) ... [2023-12-20 14:47:20,425 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:20" (1/1) ... [2023-12-20 14:47:20,438 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 14:47:20,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:20" (1/1) ... [2023-12-20 14:47:20,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:20" (1/1) ... [2023-12-20 14:47:20,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:20" (1/1) ... [2023-12-20 14:47:20,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:20" (1/1) ... [2023-12-20 14:47:20,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:20" (1/1) ... [2023-12-20 14:47:20,475 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:20" (1/1) ... [2023-12-20 14:47:20,478 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:47:20,479 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:47:20,479 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:47:20,479 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:47:20,479 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:20" (1/1) ... [2023-12-20 14:47:20,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:47:20,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:47:20,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 14:47:20,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 14:47:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:47:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 14:47:20,560 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 14:47:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-20 14:47:20,561 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-20 14:47:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-20 14:47:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-20 14:47:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-20 14:47:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-20 14:47:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-20 14:47:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-20 14:47:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-20 14:47:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-20 14:47:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-20 14:47:20,562 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-20 14:47:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-20 14:47:20,563 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-20 14:47:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-20 14:47:20,563 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-20 14:47:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-20 14:47:20,563 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-20 14:47:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-20 14:47:20,564 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-20 14:47:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:47:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-20 14:47:20,565 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-20 14:47:20,565 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-20 14:47:20,565 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-20 14:47:20,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:47:20,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:47:20,565 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-20 14:47:20,566 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-20 14:47:20,640 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:47:20,642 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:47:21,074 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:47:21,138 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:47:21,138 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-20 14:47:21,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:47:21 BoogieIcfgContainer [2023-12-20 14:47:21,139 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:47:21,140 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:47:21,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:47:21,143 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:47:21,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:47:19" (1/3) ... [2023-12-20 14:47:21,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf79a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:47:21, skipping insertion in model container [2023-12-20 14:47:21,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:20" (2/3) ... [2023-12-20 14:47:21,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf79a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:47:21, skipping insertion in model container [2023-12-20 14:47:21,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:47:21" (3/3) ... [2023-12-20 14:47:21,144 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2023-12-20 14:47:21,156 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:47:21,156 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:47:21,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:47:21,201 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;@2e122eae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:47:21,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:47:21,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 206 states have (on average 1.6650485436893203) internal successors, (343), 212 states have internal predecessors, (343), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 14:47:21,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:47:21,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:21,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:21,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:21,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:21,224 INFO L85 PathProgramCache]: Analyzing trace with hash 504153522, now seen corresponding path program 1 times [2023-12-20 14:47:21,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:21,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190984862] [2023-12-20 14:47:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:21,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:21,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:47:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:21,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:47:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:21,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:47:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:21,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:47:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:21,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:47:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:21,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:47:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:21,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:21,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190984862] [2023-12-20 14:47:21,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190984862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:21,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:21,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:47:21,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490826209] [2023-12-20 14:47:21,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:21,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:47:21,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:21,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:47:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:47:21,722 INFO L87 Difference]: Start difference. First operand has 255 states, 206 states have (on average 1.6650485436893203) internal successors, (343), 212 states have internal predecessors, (343), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:47:22,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:22,657 INFO L93 Difference]: Finished difference Result 647 states and 1025 transitions. [2023-12-20 14:47:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 14:47:22,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-20 14:47:22,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:22,668 INFO L225 Difference]: With dead ends: 647 [2023-12-20 14:47:22,668 INFO L226 Difference]: Without dead ends: 404 [2023-12-20 14:47:22,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-20 14:47:22,674 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1032 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:22,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 1038 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:47:22,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-12-20 14:47:22,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 342. [2023-12-20 14:47:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 274 states have (on average 1.5255474452554745) internal successors, (418), 281 states have internal predecessors, (418), 43 states have call successors, (43), 21 states have call predecessors, (43), 23 states have return successors, (52), 42 states have call predecessors, (52), 41 states have call successors, (52) [2023-12-20 14:47:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 513 transitions. [2023-12-20 14:47:22,724 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 513 transitions. Word has length 58 [2023-12-20 14:47:22,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:22,724 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 513 transitions. [2023-12-20 14:47:22,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:47:22,725 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 513 transitions. [2023-12-20 14:47:22,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:47:22,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:22,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:22,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:47:22,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:22,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:22,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1862541072, now seen corresponding path program 1 times [2023-12-20 14:47:22,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:22,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637429105] [2023-12-20 14:47:22,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:22,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:22,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:22,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:47:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:47:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:22,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:47:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:22,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:47:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:22,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:47:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:22,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:47:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:22,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:22,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637429105] [2023-12-20 14:47:22,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637429105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:22,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:22,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 14:47:22,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380361798] [2023-12-20 14:47:22,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:22,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:47:22,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:22,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:47:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:47:22,883 INFO L87 Difference]: Start difference. First operand 342 states and 513 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-20 14:47:24,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:24,267 INFO L93 Difference]: Finished difference Result 1219 states and 1772 transitions. [2023-12-20 14:47:24,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 14:47:24,268 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), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 58 [2023-12-20 14:47:24,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:24,274 INFO L225 Difference]: With dead ends: 1219 [2023-12-20 14:47:24,274 INFO L226 Difference]: Without dead ends: 1041 [2023-12-20 14:47:24,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 14:47:24,277 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 2077 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:24,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 1439 Invalid, 2105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:47:24,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2023-12-20 14:47:24,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 949. [2023-12-20 14:47:24,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 743 states have (on average 1.4481830417227457) internal successors, (1076), 763 states have internal predecessors, (1076), 110 states have call successors, (110), 81 states have call predecessors, (110), 94 states have return successors, (141), 107 states have call predecessors, (141), 108 states have call successors, (141) [2023-12-20 14:47:24,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1327 transitions. [2023-12-20 14:47:24,334 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1327 transitions. Word has length 58 [2023-12-20 14:47:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:24,334 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1327 transitions. [2023-12-20 14:47:24,334 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), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-20 14:47:24,334 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1327 transitions. [2023-12-20 14:47:24,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:47:24,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:24,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:24,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:47:24,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:24,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1475497841, now seen corresponding path program 1 times [2023-12-20 14:47:24,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:24,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654122085] [2023-12-20 14:47:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:24,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:24,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:47:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:24,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:47:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:24,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:47:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:24,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:47:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:24,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:47:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:47:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:24,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:24,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654122085] [2023-12-20 14:47:24,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654122085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:24,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:24,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:47:24,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977411859] [2023-12-20 14:47:24,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:24,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:47:24,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:24,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:47:24,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:47:24,431 INFO L87 Difference]: Start difference. First operand 949 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:47:25,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:25,129 INFO L93 Difference]: Finished difference Result 1793 states and 2477 transitions. [2023-12-20 14:47:25,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:47:25,130 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-20 14:47:25,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:25,134 INFO L225 Difference]: With dead ends: 1793 [2023-12-20 14:47:25,134 INFO L226 Difference]: Without dead ends: 1015 [2023-12-20 14:47:25,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:47:25,136 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 460 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:25,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1194 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:47:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2023-12-20 14:47:25,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 965. [2023-12-20 14:47:25,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 755 states have (on average 1.433112582781457) internal successors, (1082), 775 states have internal predecessors, (1082), 110 states have call successors, (110), 81 states have call predecessors, (110), 98 states have return successors, (145), 111 states have call predecessors, (145), 108 states have call successors, (145) [2023-12-20 14:47:25,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1337 transitions. [2023-12-20 14:47:25,176 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1337 transitions. Word has length 58 [2023-12-20 14:47:25,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:25,177 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1337 transitions. [2023-12-20 14:47:25,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:47:25,177 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1337 transitions. [2023-12-20 14:47:25,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:47:25,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:25,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:25,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:47:25,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:25,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:25,179 INFO L85 PathProgramCache]: Analyzing trace with hash -768485457, now seen corresponding path program 1 times [2023-12-20 14:47:25,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:25,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358568146] [2023-12-20 14:47:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:25,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:25,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:25,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:47:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:25,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:47:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:25,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:47:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:25,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:47:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:25,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:47:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:25,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:47:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:25,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:25,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:25,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358568146] [2023-12-20 14:47:25,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358568146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:25,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:25,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:47:25,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081279238] [2023-12-20 14:47:25,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:25,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:47:25,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:25,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:47:25,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:47:25,256 INFO L87 Difference]: Start difference. First operand 965 states and 1337 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:47:25,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:25,987 INFO L93 Difference]: Finished difference Result 1857 states and 2543 transitions. [2023-12-20 14:47:25,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 14:47:25,987 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-20 14:47:25,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:25,992 INFO L225 Difference]: With dead ends: 1857 [2023-12-20 14:47:25,992 INFO L226 Difference]: Without dead ends: 1063 [2023-12-20 14:47:25,994 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 [2023-12-20 14:47:25,994 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 312 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:25,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1338 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:47:25,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2023-12-20 14:47:26,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1005. [2023-12-20 14:47:26,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 785 states have (on average 1.41656050955414) internal successors, (1112), 805 states have internal predecessors, (1112), 110 states have call successors, (110), 81 states have call predecessors, (110), 108 states have return successors, (155), 121 states have call predecessors, (155), 108 states have call successors, (155) [2023-12-20 14:47:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1377 transitions. [2023-12-20 14:47:26,036 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1377 transitions. Word has length 58 [2023-12-20 14:47:26,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:26,037 INFO L495 AbstractCegarLoop]: Abstraction has 1005 states and 1377 transitions. [2023-12-20 14:47:26,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:47:26,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1377 transitions. [2023-12-20 14:47:26,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:47:26,038 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:26,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:26,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:47:26,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:26,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:26,039 INFO L85 PathProgramCache]: Analyzing trace with hash -706445843, now seen corresponding path program 1 times [2023-12-20 14:47:26,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:26,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360832223] [2023-12-20 14:47:26,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:26,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:26,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:26,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:47:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:26,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:47:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:26,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:47:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:26,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:47:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:26,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:47:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:26,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:47:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:26,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:26,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360832223] [2023-12-20 14:47:26,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360832223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:26,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:26,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:47:26,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559172427] [2023-12-20 14:47:26,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:26,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:47:26,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:26,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:47:26,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:47:26,157 INFO L87 Difference]: Start difference. First operand 1005 states and 1377 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:47:26,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:26,879 INFO L93 Difference]: Finished difference Result 2051 states and 2769 transitions. [2023-12-20 14:47:26,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:47:26,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-20 14:47:26,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:26,884 INFO L225 Difference]: With dead ends: 2051 [2023-12-20 14:47:26,884 INFO L226 Difference]: Without dead ends: 1435 [2023-12-20 14:47:26,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-12-20 14:47:26,886 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 919 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:26,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 808 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:47:26,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2023-12-20 14:47:26,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1313. [2023-12-20 14:47:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1027 states have (on average 1.3836416747809153) internal successors, (1421), 1050 states have internal predecessors, (1421), 142 states have call successors, (142), 111 states have call predecessors, (142), 142 states have return successors, (192), 154 states have call predecessors, (192), 140 states have call successors, (192) [2023-12-20 14:47:26,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1755 transitions. [2023-12-20 14:47:26,931 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1755 transitions. Word has length 58 [2023-12-20 14:47:26,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:26,932 INFO L495 AbstractCegarLoop]: Abstraction has 1313 states and 1755 transitions. [2023-12-20 14:47:26,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:47:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1755 transitions. [2023-12-20 14:47:26,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:47:26,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:26,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:26,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:47:26,933 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:26,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:26,933 INFO L85 PathProgramCache]: Analyzing trace with hash -487591125, now seen corresponding path program 1 times [2023-12-20 14:47:26,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:26,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944197989] [2023-12-20 14:47:26,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:26,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:26,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:26,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:47:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:27,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:47:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:27,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:47:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:27,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:47:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:27,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:47:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:27,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:47:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:27,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:27,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944197989] [2023-12-20 14:47:27,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944197989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:27,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:27,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:47:27,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359495828] [2023-12-20 14:47:27,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:27,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:47:27,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:27,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:47:27,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:47:27,032 INFO L87 Difference]: Start difference. First operand 1313 states and 1755 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:47:27,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:27,826 INFO L93 Difference]: Finished difference Result 2303 states and 3032 transitions. [2023-12-20 14:47:27,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 14:47:27,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-20 14:47:27,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:27,832 INFO L225 Difference]: With dead ends: 2303 [2023-12-20 14:47:27,832 INFO L226 Difference]: Without dead ends: 1379 [2023-12-20 14:47:27,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-12-20 14:47:27,834 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 746 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:27,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 974 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:47:27,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2023-12-20 14:47:27,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1228. [2023-12-20 14:47:27,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 965 states have (on average 1.3823834196891192) internal successors, (1334), 983 states have internal predecessors, (1334), 134 states have call successors, (134), 104 states have call predecessors, (134), 127 states have return successors, (170), 142 states have call predecessors, (170), 132 states have call successors, (170) [2023-12-20 14:47:27,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1638 transitions. [2023-12-20 14:47:27,875 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1638 transitions. Word has length 58 [2023-12-20 14:47:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:27,875 INFO L495 AbstractCegarLoop]: Abstraction has 1228 states and 1638 transitions. [2023-12-20 14:47:27,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:47:27,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1638 transitions. [2023-12-20 14:47:27,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:47:27,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:27,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:27,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:47:27,876 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:27,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:27,877 INFO L85 PathProgramCache]: Analyzing trace with hash -64889299, now seen corresponding path program 1 times [2023-12-20 14:47:27,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:27,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372070053] [2023-12-20 14:47:27,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:27,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:27,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:27,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:47:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:27,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:47:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:27,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:47:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:27,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:47:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:27,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:47:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:27,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:47:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:27,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:27,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372070053] [2023-12-20 14:47:27,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372070053] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:27,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:27,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:27,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187239167] [2023-12-20 14:47:27,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:27,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:27,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:27,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:27,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:27,961 INFO L87 Difference]: Start difference. First operand 1228 states and 1638 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:47:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:28,451 INFO L93 Difference]: Finished difference Result 3409 states and 4482 transitions. [2023-12-20 14:47:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 14:47:28,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 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 58 [2023-12-20 14:47:28,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:28,460 INFO L225 Difference]: With dead ends: 3409 [2023-12-20 14:47:28,461 INFO L226 Difference]: Without dead ends: 2352 [2023-12-20 14:47:28,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:47:28,464 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 909 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:28,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 661 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:47:28,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2023-12-20 14:47:28,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2216. [2023-12-20 14:47:28,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 1715 states have (on average 1.338192419825073) internal successors, (2295), 1748 states have internal predecessors, (2295), 249 states have call successors, (249), 201 states have call predecessors, (249), 250 states have return successors, (356), 269 states have call predecessors, (356), 247 states have call successors, (356) [2023-12-20 14:47:28,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 2900 transitions. [2023-12-20 14:47:28,587 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 2900 transitions. Word has length 58 [2023-12-20 14:47:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:28,587 INFO L495 AbstractCegarLoop]: Abstraction has 2216 states and 2900 transitions. [2023-12-20 14:47:28,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:47:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 2900 transitions. [2023-12-20 14:47:28,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 14:47:28,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:28,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:28,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:47:28,589 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:28,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:28,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1823096331, now seen corresponding path program 1 times [2023-12-20 14:47:28,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:28,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948802493] [2023-12-20 14:47:28,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:28,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:28,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:47:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:28,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:47:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:28,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:47:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:28,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:47:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:28,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:47:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:28,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:47:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:28,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:28,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948802493] [2023-12-20 14:47:28,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948802493] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:28,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:28,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:47:28,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440452012] [2023-12-20 14:47:28,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:28,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:47:28,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:28,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:47:28,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:47:28,637 INFO L87 Difference]: Start difference. First operand 2216 states and 2900 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:47:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:29,136 INFO L93 Difference]: Finished difference Result 5288 states and 6861 transitions. [2023-12-20 14:47:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:47:29,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 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 59 [2023-12-20 14:47:29,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:29,148 INFO L225 Difference]: With dead ends: 5288 [2023-12-20 14:47:29,148 INFO L226 Difference]: Without dead ends: 3246 [2023-12-20 14:47:29,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:47:29,186 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 718 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:29,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 670 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:47:29,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2023-12-20 14:47:29,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2969. [2023-12-20 14:47:29,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2284 states have (on average 1.3104203152364273) internal successors, (2993), 2330 states have internal predecessors, (2993), 342 states have call successors, (342), 283 states have call predecessors, (342), 341 states have return successors, (483), 358 states have call predecessors, (483), 340 states have call successors, (483) [2023-12-20 14:47:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 3818 transitions. [2023-12-20 14:47:29,310 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 3818 transitions. Word has length 59 [2023-12-20 14:47:29,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:29,311 INFO L495 AbstractCegarLoop]: Abstraction has 2969 states and 3818 transitions. [2023-12-20 14:47:29,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:47:29,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 3818 transitions. [2023-12-20 14:47:29,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:47:29,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:29,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:29,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:47:29,312 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:29,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:29,312 INFO L85 PathProgramCache]: Analyzing trace with hash -652593130, now seen corresponding path program 1 times [2023-12-20 14:47:29,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:29,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850300447] [2023-12-20 14:47:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:29,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:29,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:29,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:47:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:29,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:47:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:29,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:47:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:29,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:47:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:29,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:47:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:29,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:47:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:29,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:29,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850300447] [2023-12-20 14:47:29,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850300447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:29,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:29,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:47:29,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102565643] [2023-12-20 14:47:29,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:29,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:47:29,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:29,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:47:29,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:47:29,376 INFO L87 Difference]: Start difference. First operand 2969 states and 3818 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:47:30,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:30,018 INFO L93 Difference]: Finished difference Result 6692 states and 8607 transitions. [2023-12-20 14:47:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:47:30,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2023-12-20 14:47:30,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:30,038 INFO L225 Difference]: With dead ends: 6692 [2023-12-20 14:47:30,039 INFO L226 Difference]: Without dead ends: 4263 [2023-12-20 14:47:30,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:47:30,046 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 661 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:30,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 640 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:47:30,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4263 states. [2023-12-20 14:47:30,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4263 to 3954. [2023-12-20 14:47:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3954 states, 3029 states have (on average 1.2984483327830967) internal successors, (3933), 3074 states have internal predecessors, (3933), 465 states have call successors, (465), 389 states have call predecessors, (465), 458 states have return successors, (642), 493 states have call predecessors, (642), 463 states have call successors, (642) [2023-12-20 14:47:30,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3954 states to 3954 states and 5040 transitions. [2023-12-20 14:47:30,344 INFO L78 Accepts]: Start accepts. Automaton has 3954 states and 5040 transitions. Word has length 60 [2023-12-20 14:47:30,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:30,344 INFO L495 AbstractCegarLoop]: Abstraction has 3954 states and 5040 transitions. [2023-12-20 14:47:30,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:47:30,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3954 states and 5040 transitions. [2023-12-20 14:47:30,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 14:47:30,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:30,347 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:30,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:47:30,347 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:30,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:30,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1591850236, now seen corresponding path program 1 times [2023-12-20 14:47:30,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:30,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047718707] [2023-12-20 14:47:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:30,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:30,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:47:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:47:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:30,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:47:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:47:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:30,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:47:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:47:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:30,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:30,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:30,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047718707] [2023-12-20 14:47:30,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047718707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:30,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:30,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:30,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834580718] [2023-12-20 14:47:30,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:30,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:30,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:30,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:30,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:30,420 INFO L87 Difference]: Start difference. First operand 3954 states and 5040 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 14:47:31,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:31,065 INFO L93 Difference]: Finished difference Result 4655 states and 5899 transitions. [2023-12-20 14:47:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:47:31,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2023-12-20 14:47:31,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:31,079 INFO L225 Difference]: With dead ends: 4655 [2023-12-20 14:47:31,079 INFO L226 Difference]: Without dead ends: 4652 [2023-12-20 14:47:31,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:47:31,080 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1047 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:31,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 675 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:47:31,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4652 states. [2023-12-20 14:47:31,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4652 to 4071. [2023-12-20 14:47:31,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4071 states, 3131 states have (on average 1.2983072500798467) internal successors, (4065), 3177 states have internal predecessors, (4065), 472 states have call successors, (472), 397 states have call predecessors, (472), 466 states have return successors, (653), 499 states have call predecessors, (653), 471 states have call successors, (653) [2023-12-20 14:47:31,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 5190 transitions. [2023-12-20 14:47:31,285 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 5190 transitions. Word has length 67 [2023-12-20 14:47:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:31,286 INFO L495 AbstractCegarLoop]: Abstraction has 4071 states and 5190 transitions. [2023-12-20 14:47:31,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 14:47:31,286 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 5190 transitions. [2023-12-20 14:47:31,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 14:47:31,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:31,288 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:31,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:47:31,288 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:31,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:31,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2101865471, now seen corresponding path program 1 times [2023-12-20 14:47:31,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:31,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337230701] [2023-12-20 14:47:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:31,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:31,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:31,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:47:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:31,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:47:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:47:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:47:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:47:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:31,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:47:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:31,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:31,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337230701] [2023-12-20 14:47:31,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337230701] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:47:31,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838646318] [2023-12-20 14:47:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:31,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:47:31,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:47:31,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:47:31,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 14:47:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:31,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 14:47:31,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:47:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:31,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:47:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:31,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838646318] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:47:31,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:47:31,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-12-20 14:47:31,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223499939] [2023-12-20 14:47:31,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:47:31,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:47:31,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:31,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:47:31,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:47:31,769 INFO L87 Difference]: Start difference. First operand 4071 states and 5190 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-20 14:47:33,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:33,227 INFO L93 Difference]: Finished difference Result 8849 states and 11120 transitions. [2023-12-20 14:47:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-20 14:47:33,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 68 [2023-12-20 14:47:33,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:33,260 INFO L225 Difference]: With dead ends: 8849 [2023-12-20 14:47:33,261 INFO L226 Difference]: Without dead ends: 8846 [2023-12-20 14:47:33,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:47:33,267 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1282 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:33,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 1304 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1752 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 14:47:33,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8846 states. [2023-12-20 14:47:33,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8846 to 7195. [2023-12-20 14:47:33,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7195 states, 5515 states have (on average 1.2892112420670898) internal successors, (7110), 5596 states have internal predecessors, (7110), 834 states have call successors, (834), 711 states have call predecessors, (834), 844 states have return successors, (1164), 890 states have call predecessors, (1164), 833 states have call successors, (1164) [2023-12-20 14:47:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7195 states to 7195 states and 9108 transitions. [2023-12-20 14:47:33,692 INFO L78 Accepts]: Start accepts. Automaton has 7195 states and 9108 transitions. Word has length 68 [2023-12-20 14:47:33,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:33,692 INFO L495 AbstractCegarLoop]: Abstraction has 7195 states and 9108 transitions. [2023-12-20 14:47:33,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-20 14:47:33,693 INFO L276 IsEmpty]: Start isEmpty. Operand 7195 states and 9108 transitions. [2023-12-20 14:47:33,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 14:47:33,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:33,694 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:33,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 14:47:33,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-20 14:47:33,901 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:33,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash -697886660, now seen corresponding path program 2 times [2023-12-20 14:47:33,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:33,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631550823] [2023-12-20 14:47:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:33,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:33,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:33,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:47:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:33,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:47:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:47:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:47:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:33,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:47:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:47:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:33,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:33,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631550823] [2023-12-20 14:47:33,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631550823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:33,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:33,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:47:33,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364865011] [2023-12-20 14:47:33,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:33,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:47:33,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:33,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:47:33,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:47:33,941 INFO L87 Difference]: Start difference. First operand 7195 states and 9108 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 14:47:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:34,518 INFO L93 Difference]: Finished difference Result 8915 states and 11347 transitions. [2023-12-20 14:47:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:47:34,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2023-12-20 14:47:34,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:34,529 INFO L225 Difference]: With dead ends: 8915 [2023-12-20 14:47:34,529 INFO L226 Difference]: Without dead ends: 3639 [2023-12-20 14:47:34,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:47:34,538 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 783 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:34,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 593 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:47:34,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2023-12-20 14:47:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3187. [2023-12-20 14:47:34,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3187 states, 2439 states have (on average 1.2779827798277983) internal successors, (3117), 2473 states have internal predecessors, (3117), 376 states have call successors, (376), 313 states have call predecessors, (376), 370 states have return successors, (494), 403 states have call predecessors, (494), 375 states have call successors, (494) [2023-12-20 14:47:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 3987 transitions. [2023-12-20 14:47:34,718 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 3987 transitions. Word has length 71 [2023-12-20 14:47:34,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:34,718 INFO L495 AbstractCegarLoop]: Abstraction has 3187 states and 3987 transitions. [2023-12-20 14:47:34,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 14:47:34,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 3987 transitions. [2023-12-20 14:47:34,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 14:47:34,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:34,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:34,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:47:34,720 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:34,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:34,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1103290916, now seen corresponding path program 1 times [2023-12-20 14:47:34,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:34,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911632550] [2023-12-20 14:47:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:34,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:47:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:47:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:47:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:47:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:47:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:47:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:47:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:34,793 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:47:34,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:34,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911632550] [2023-12-20 14:47:34,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911632550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:34,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:34,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:47:34,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566843546] [2023-12-20 14:47:34,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:34,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:47:34,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:47:34,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:47:34,795 INFO L87 Difference]: Start difference. First operand 3187 states and 3987 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:47:35,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:35,730 INFO L93 Difference]: Finished difference Result 9329 states and 11557 transitions. [2023-12-20 14:47:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 14:47:35,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2023-12-20 14:47:35,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:35,754 INFO L225 Difference]: With dead ends: 9329 [2023-12-20 14:47:35,754 INFO L226 Difference]: Without dead ends: 5795 [2023-12-20 14:47:35,761 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 [2023-12-20 14:47:35,761 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1046 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:35,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1018 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:47:35,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2023-12-20 14:47:36,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 5466. [2023-12-20 14:47:36,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5466 states, 4114 states have (on average 1.2401555663587749) internal successors, (5102), 4196 states have internal predecessors, (5102), 656 states have call successors, (656), 553 states have call predecessors, (656), 694 states have return successors, (980), 719 states have call predecessors, (980), 655 states have call successors, (980) [2023-12-20 14:47:36,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5466 states to 5466 states and 6738 transitions. [2023-12-20 14:47:36,051 INFO L78 Accepts]: Start accepts. Automaton has 5466 states and 6738 transitions. Word has length 76 [2023-12-20 14:47:36,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:36,051 INFO L495 AbstractCegarLoop]: Abstraction has 5466 states and 6738 transitions. [2023-12-20 14:47:36,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:47:36,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5466 states and 6738 transitions. [2023-12-20 14:47:36,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 14:47:36,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:36,053 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] [2023-12-20 14:47:36,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:47:36,053 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:36,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:36,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1254542137, now seen corresponding path program 1 times [2023-12-20 14:47:36,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:36,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775426752] [2023-12-20 14:47:36,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:36,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:36,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:36,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:47:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:36,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:47:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:47:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:36,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:47:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:36,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:36,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775426752] [2023-12-20 14:47:36,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775426752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:36,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:36,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:47:36,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482969927] [2023-12-20 14:47:36,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:36,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:47:36,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:36,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:47:36,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:47:36,131 INFO L87 Difference]: Start difference. First operand 5466 states and 6738 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:37,407 INFO L93 Difference]: Finished difference Result 5873 states and 7392 transitions. [2023-12-20 14:47:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:47:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 14:47:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:37,436 INFO L225 Difference]: With dead ends: 5873 [2023-12-20 14:47:37,437 INFO L226 Difference]: Without dead ends: 5721 [2023-12-20 14:47:37,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:47:37,440 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 806 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:37,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 681 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:47:37,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5721 states. [2023-12-20 14:47:37,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5721 to 5622. [2023-12-20 14:47:37,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5622 states, 4250 states have (on average 1.251294117647059) internal successors, (5318), 4333 states have internal predecessors, (5318), 669 states have call successors, (669), 559 states have call predecessors, (669), 701 states have return successors, (996), 732 states have call predecessors, (996), 668 states have call successors, (996) [2023-12-20 14:47:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5622 states to 5622 states and 6983 transitions. [2023-12-20 14:47:37,871 INFO L78 Accepts]: Start accepts. Automaton has 5622 states and 6983 transitions. Word has length 81 [2023-12-20 14:47:37,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:37,871 INFO L495 AbstractCegarLoop]: Abstraction has 5622 states and 6983 transitions. [2023-12-20 14:47:37,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:37,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5622 states and 6983 transitions. [2023-12-20 14:47:37,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 14:47:37,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:37,873 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] [2023-12-20 14:47:37,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:47:37,873 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:37,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:37,873 INFO L85 PathProgramCache]: Analyzing trace with hash -300601979, now seen corresponding path program 1 times [2023-12-20 14:47:37,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:37,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184172466] [2023-12-20 14:47:37,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:37,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:37,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:37,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:47:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:37,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:47:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:37,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:47:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:37,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:47:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:37,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:37,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184172466] [2023-12-20 14:47:37,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184172466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:37,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:37,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:37,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117459944] [2023-12-20 14:47:37,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:37,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:37,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:37,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:37,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:37,986 INFO L87 Difference]: Start difference. First operand 5622 states and 6983 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:39,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:39,747 INFO L93 Difference]: Finished difference Result 6238 states and 7966 transitions. [2023-12-20 14:47:39,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:47:39,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 14:47:39,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:39,761 INFO L225 Difference]: With dead ends: 6238 [2023-12-20 14:47:39,761 INFO L226 Difference]: Without dead ends: 5930 [2023-12-20 14:47:39,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:47:39,764 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 809 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:39,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1151 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:47:39,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5930 states. [2023-12-20 14:47:40,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5930 to 5767. [2023-12-20 14:47:40,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 4375 states have (on average 1.2598857142857143) internal successors, (5512), 4459 states have internal predecessors, (5512), 682 states have call successors, (682), 565 states have call predecessors, (682), 708 states have return successors, (1011), 746 states have call predecessors, (1011), 681 states have call successors, (1011) [2023-12-20 14:47:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 7205 transitions. [2023-12-20 14:47:40,184 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 7205 transitions. Word has length 81 [2023-12-20 14:47:40,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:40,185 INFO L495 AbstractCegarLoop]: Abstraction has 5767 states and 7205 transitions. [2023-12-20 14:47:40,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 7205 transitions. [2023-12-20 14:47:40,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 14:47:40,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:40,186 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] [2023-12-20 14:47:40,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:47:40,187 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:40,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:40,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1516755705, now seen corresponding path program 1 times [2023-12-20 14:47:40,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:40,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428533305] [2023-12-20 14:47:40,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:40,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:47:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:40,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:47:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:40,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:47:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:40,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:47:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:40,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:40,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:40,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428533305] [2023-12-20 14:47:40,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428533305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:40,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:40,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:40,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736635290] [2023-12-20 14:47:40,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:40,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:40,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:40,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:40,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:40,300 INFO L87 Difference]: Start difference. First operand 5767 states and 7205 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:41,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:41,915 INFO L93 Difference]: Finished difference Result 6772 states and 8804 transitions. [2023-12-20 14:47:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:47:41,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 14:47:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:41,930 INFO L225 Difference]: With dead ends: 6772 [2023-12-20 14:47:41,930 INFO L226 Difference]: Without dead ends: 6319 [2023-12-20 14:47:41,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:47:41,935 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 807 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:41,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1149 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:47:41,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6319 states. [2023-12-20 14:47:42,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6319 to 6058. [2023-12-20 14:47:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6058 states, 4626 states have (on average 1.275616083009079) internal successors, (5901), 4712 states have internal predecessors, (5901), 708 states have call successors, (708), 577 states have call predecessors, (708), 722 states have return successors, (1045), 774 states have call predecessors, (1045), 707 states have call successors, (1045) [2023-12-20 14:47:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6058 states to 6058 states and 7654 transitions. [2023-12-20 14:47:42,356 INFO L78 Accepts]: Start accepts. Automaton has 6058 states and 7654 transitions. Word has length 81 [2023-12-20 14:47:42,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:42,357 INFO L495 AbstractCegarLoop]: Abstraction has 6058 states and 7654 transitions. [2023-12-20 14:47:42,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:42,357 INFO L276 IsEmpty]: Start isEmpty. Operand 6058 states and 7654 transitions. [2023-12-20 14:47:42,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 14:47:42,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:42,360 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] [2023-12-20 14:47:42,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:47:42,360 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:42,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:42,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2046244165, now seen corresponding path program 1 times [2023-12-20 14:47:42,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:42,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670909144] [2023-12-20 14:47:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:42,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:42,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:42,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:42,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:47:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:42,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:47:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:42,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:47:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:42,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:47:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:42,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:42,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670909144] [2023-12-20 14:47:42,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670909144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:42,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:42,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:42,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096419167] [2023-12-20 14:47:42,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:42,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:42,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:42,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:42,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:42,463 INFO L87 Difference]: Start difference. First operand 6058 states and 7654 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:43,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:43,478 INFO L93 Difference]: Finished difference Result 7053 states and 9246 transitions. [2023-12-20 14:47:43,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:47:43,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 14:47:43,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:43,490 INFO L225 Difference]: With dead ends: 7053 [2023-12-20 14:47:43,491 INFO L226 Difference]: Without dead ends: 6309 [2023-12-20 14:47:43,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:47:43,494 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 766 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:43,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 575 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:47:43,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2023-12-20 14:47:43,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 6058. [2023-12-20 14:47:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6058 states, 4626 states have (on average 1.2745352356247297) internal successors, (5896), 4712 states have internal predecessors, (5896), 708 states have call successors, (708), 577 states have call predecessors, (708), 722 states have return successors, (1045), 774 states have call predecessors, (1045), 707 states have call successors, (1045) [2023-12-20 14:47:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6058 states to 6058 states and 7649 transitions. [2023-12-20 14:47:43,956 INFO L78 Accepts]: Start accepts. Automaton has 6058 states and 7649 transitions. Word has length 81 [2023-12-20 14:47:43,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:43,956 INFO L495 AbstractCegarLoop]: Abstraction has 6058 states and 7649 transitions. [2023-12-20 14:47:43,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:43,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6058 states and 7649 transitions. [2023-12-20 14:47:43,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 14:47:43,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:43,958 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] [2023-12-20 14:47:43,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:47:43,959 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:43,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:43,959 INFO L85 PathProgramCache]: Analyzing trace with hash 360064327, now seen corresponding path program 1 times [2023-12-20 14:47:43,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:43,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138964934] [2023-12-20 14:47:43,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:43,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:43,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:44,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:47:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:44,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:47:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:44,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:47:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:44,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:47:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:44,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:44,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138964934] [2023-12-20 14:47:44,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138964934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:44,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:44,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:44,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895623494] [2023-12-20 14:47:44,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:44,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:44,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:44,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:44,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:44,040 INFO L87 Difference]: Start difference. First operand 6058 states and 7649 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:45,129 INFO L93 Difference]: Finished difference Result 7047 states and 9220 transitions. [2023-12-20 14:47:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:47:45,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 14:47:45,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:45,147 INFO L225 Difference]: With dead ends: 7047 [2023-12-20 14:47:45,147 INFO L226 Difference]: Without dead ends: 6303 [2023-12-20 14:47:45,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:47:45,152 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 658 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:45,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 695 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:47:45,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2023-12-20 14:47:45,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 6058. [2023-12-20 14:47:45,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6058 states, 4626 states have (on average 1.2734543882403804) internal successors, (5891), 4712 states have internal predecessors, (5891), 708 states have call successors, (708), 577 states have call predecessors, (708), 722 states have return successors, (1045), 774 states have call predecessors, (1045), 707 states have call successors, (1045) [2023-12-20 14:47:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6058 states to 6058 states and 7644 transitions. [2023-12-20 14:47:45,606 INFO L78 Accepts]: Start accepts. Automaton has 6058 states and 7644 transitions. Word has length 81 [2023-12-20 14:47:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:45,606 INFO L495 AbstractCegarLoop]: Abstraction has 6058 states and 7644 transitions. [2023-12-20 14:47:45,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 6058 states and 7644 transitions. [2023-12-20 14:47:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 14:47:45,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:45,609 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] [2023-12-20 14:47:45,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:47:45,609 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:45,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:45,609 INFO L85 PathProgramCache]: Analyzing trace with hash 305671429, now seen corresponding path program 1 times [2023-12-20 14:47:45,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:45,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919737683] [2023-12-20 14:47:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:45,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:45,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:45,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:47:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:45,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:47:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:45,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:47:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:45,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:47:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:45,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:45,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919737683] [2023-12-20 14:47:45,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919737683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:45,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:45,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:45,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001397769] [2023-12-20 14:47:45,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:45,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:45,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:45,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:45,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:45,699 INFO L87 Difference]: Start difference. First operand 6058 states and 7644 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:47,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:47,356 INFO L93 Difference]: Finished difference Result 7960 states and 10619 transitions. [2023-12-20 14:47:47,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:47:47,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 14:47:47,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:47,374 INFO L225 Difference]: With dead ends: 7960 [2023-12-20 14:47:47,374 INFO L226 Difference]: Without dead ends: 7216 [2023-12-20 14:47:47,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:47:47,378 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 911 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:47,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1138 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1707 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:47:47,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7216 states. [2023-12-20 14:47:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7216 to 6626. [2023-12-20 14:47:47,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6626 states, 5118 states have (on average 1.2983587338804221) internal successors, (6645), 5208 states have internal predecessors, (6645), 756 states have call successors, (756), 601 states have call predecessors, (756), 750 states have return successors, (1115), 826 states have call predecessors, (1115), 755 states have call successors, (1115) [2023-12-20 14:47:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6626 states to 6626 states and 8516 transitions. [2023-12-20 14:47:47,850 INFO L78 Accepts]: Start accepts. Automaton has 6626 states and 8516 transitions. Word has length 81 [2023-12-20 14:47:47,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:47,850 INFO L495 AbstractCegarLoop]: Abstraction has 6626 states and 8516 transitions. [2023-12-20 14:47:47,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:47,850 INFO L276 IsEmpty]: Start isEmpty. Operand 6626 states and 8516 transitions. [2023-12-20 14:47:47,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 14:47:47,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:47,852 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] [2023-12-20 14:47:47,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:47:47,852 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:47,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:47,853 INFO L85 PathProgramCache]: Analyzing trace with hash 984943683, now seen corresponding path program 1 times [2023-12-20 14:47:47,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:47,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614991319] [2023-12-20 14:47:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:47,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:47,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:47,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:47:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:47,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:47:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:47,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:47:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:47,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:47:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:47,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:47,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614991319] [2023-12-20 14:47:47,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614991319] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:47,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:47,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:47,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713579139] [2023-12-20 14:47:47,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:47,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:47,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:47,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:47,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:47,925 INFO L87 Difference]: Start difference. First operand 6626 states and 8516 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:49,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:49,042 INFO L93 Difference]: Finished difference Result 8313 states and 11168 transitions. [2023-12-20 14:47:49,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:47:49,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 14:47:49,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:49,057 INFO L225 Difference]: With dead ends: 8313 [2023-12-20 14:47:49,057 INFO L226 Difference]: Without dead ends: 7001 [2023-12-20 14:47:49,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:47:49,062 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 654 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:49,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 694 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:47:49,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7001 states. [2023-12-20 14:47:49,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7001 to 6626. [2023-12-20 14:47:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6626 states, 5118 states have (on average 1.2966002344665886) internal successors, (6636), 5208 states have internal predecessors, (6636), 756 states have call successors, (756), 601 states have call predecessors, (756), 750 states have return successors, (1115), 826 states have call predecessors, (1115), 755 states have call successors, (1115) [2023-12-20 14:47:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6626 states to 6626 states and 8507 transitions. [2023-12-20 14:47:49,547 INFO L78 Accepts]: Start accepts. Automaton has 6626 states and 8507 transitions. Word has length 81 [2023-12-20 14:47:49,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:49,547 INFO L495 AbstractCegarLoop]: Abstraction has 6626 states and 8507 transitions. [2023-12-20 14:47:49,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:49,547 INFO L276 IsEmpty]: Start isEmpty. Operand 6626 states and 8507 transitions. [2023-12-20 14:47:49,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 14:47:49,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:49,550 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] [2023-12-20 14:47:49,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:47:49,550 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:49,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:49,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1348448955, now seen corresponding path program 1 times [2023-12-20 14:47:49,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:49,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571314576] [2023-12-20 14:47:49,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:49,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:49,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:49,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:47:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:49,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:47:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:49,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:47:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:49,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:47:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:49,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:49,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571314576] [2023-12-20 14:47:49,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571314576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:49,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:49,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:49,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930996334] [2023-12-20 14:47:49,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:49,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:49,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:49,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:49,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:49,644 INFO L87 Difference]: Start difference. First operand 6626 states and 8507 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:51,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:51,176 INFO L93 Difference]: Finished difference Result 9916 states and 13605 transitions. [2023-12-20 14:47:51,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:47:51,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 14:47:51,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:51,240 INFO L225 Difference]: With dead ends: 9916 [2023-12-20 14:47:51,240 INFO L226 Difference]: Without dead ends: 8604 [2023-12-20 14:47:51,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:47:51,248 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 875 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:51,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 847 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:47:51,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8604 states. [2023-12-20 14:47:51,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8604 to 7784. [2023-12-20 14:47:51,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7784 states, 6128 states have (on average 1.33355091383812) internal successors, (8172), 6226 states have internal predecessors, (8172), 848 states have call successors, (848), 649 states have call predecessors, (848), 806 states have return successors, (1269), 926 states have call predecessors, (1269), 847 states have call successors, (1269) [2023-12-20 14:47:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7784 states to 7784 states and 10289 transitions. [2023-12-20 14:47:51,875 INFO L78 Accepts]: Start accepts. Automaton has 7784 states and 10289 transitions. Word has length 81 [2023-12-20 14:47:51,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:51,875 INFO L495 AbstractCegarLoop]: Abstraction has 7784 states and 10289 transitions. [2023-12-20 14:47:51,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:51,875 INFO L276 IsEmpty]: Start isEmpty. Operand 7784 states and 10289 transitions. [2023-12-20 14:47:51,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 14:47:51,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:51,878 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] [2023-12-20 14:47:51,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:47:51,878 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:51,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:51,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1146625021, now seen corresponding path program 1 times [2023-12-20 14:47:51,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:51,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786820392] [2023-12-20 14:47:51,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:51,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:51,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:51,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:47:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:47:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:51,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:47:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:51,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:47:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:51,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:51,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786820392] [2023-12-20 14:47:51,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786820392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:51,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:51,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:51,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029712831] [2023-12-20 14:47:51,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:51,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:51,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:51,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:51,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:51,956 INFO L87 Difference]: Start difference. First operand 7784 states and 10289 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:53,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:53,606 INFO L93 Difference]: Finished difference Result 13872 states and 19745 transitions. [2023-12-20 14:47:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:47:53,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 14:47:53,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:53,634 INFO L225 Difference]: With dead ends: 13872 [2023-12-20 14:47:53,634 INFO L226 Difference]: Without dead ends: 11402 [2023-12-20 14:47:53,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:47:53,644 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 795 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:53,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1142 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:47:53,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11402 states. [2023-12-20 14:47:54,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11402 to 10097. [2023-12-20 14:47:54,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10097 states, 8153 states have (on average 1.3803507911198332) internal successors, (11254), 8267 states have internal predecessors, (11254), 1024 states have call successors, (1024), 745 states have call predecessors, (1024), 918 states have return successors, (1623), 1118 states have call predecessors, (1623), 1023 states have call successors, (1623) [2023-12-20 14:47:54,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10097 states to 10097 states and 13901 transitions. [2023-12-20 14:47:54,396 INFO L78 Accepts]: Start accepts. Automaton has 10097 states and 13901 transitions. Word has length 81 [2023-12-20 14:47:54,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:54,396 INFO L495 AbstractCegarLoop]: Abstraction has 10097 states and 13901 transitions. [2023-12-20 14:47:54,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:54,396 INFO L276 IsEmpty]: Start isEmpty. Operand 10097 states and 13901 transitions. [2023-12-20 14:47:54,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 14:47:54,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:54,403 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] [2023-12-20 14:47:54,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:47:54,403 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:54,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:54,403 INFO L85 PathProgramCache]: Analyzing trace with hash -585925243, now seen corresponding path program 1 times [2023-12-20 14:47:54,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:54,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921345581] [2023-12-20 14:47:54,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:54,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:54,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:54,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:47:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:47:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:54,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:47:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:54,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:47:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:54,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:54,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921345581] [2023-12-20 14:47:54,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921345581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:54,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:54,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:54,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90564004] [2023-12-20 14:47:54,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:54,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:54,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:54,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:54,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:54,486 INFO L87 Difference]: Start difference. First operand 10097 states and 13901 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:56,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:47:56,468 INFO L93 Difference]: Finished difference Result 22924 states and 34025 transitions. [2023-12-20 14:47:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 14:47:56,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 14:47:56,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:47:56,516 INFO L225 Difference]: With dead ends: 22924 [2023-12-20 14:47:56,516 INFO L226 Difference]: Without dead ends: 18142 [2023-12-20 14:47:56,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-20 14:47:56,531 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 909 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:47:56,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 854 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:47:56,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18142 states. [2023-12-20 14:47:57,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18142 to 14875. [2023-12-20 14:47:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14875 states, 12319 states have (on average 1.4292556213978407) internal successors, (17607), 12515 states have internal predecessors, (17607), 1406 states have call successors, (1406), 943 states have call predecessors, (1406), 1148 states have return successors, (2249), 1450 states have call predecessors, (2249), 1405 states have call successors, (2249) [2023-12-20 14:47:57,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14875 states to 14875 states and 21262 transitions. [2023-12-20 14:47:57,557 INFO L78 Accepts]: Start accepts. Automaton has 14875 states and 21262 transitions. Word has length 81 [2023-12-20 14:47:57,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:47:57,557 INFO L495 AbstractCegarLoop]: Abstraction has 14875 states and 21262 transitions. [2023-12-20 14:47:57,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:47:57,557 INFO L276 IsEmpty]: Start isEmpty. Operand 14875 states and 21262 transitions. [2023-12-20 14:47:57,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 14:47:57,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:47:57,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:47:57,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:47:57,562 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:47:57,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:47:57,562 INFO L85 PathProgramCache]: Analyzing trace with hash -162278521, now seen corresponding path program 1 times [2023-12-20 14:47:57,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:47:57,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402807313] [2023-12-20 14:47:57,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:47:57,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:47:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:57,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:47:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:57,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:47:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:57,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:47:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:57,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:47:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:57,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:47:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:47:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:47:57,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:47:57,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402807313] [2023-12-20 14:47:57,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402807313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:47:57,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:47:57,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:47:57,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063391879] [2023-12-20 14:47:57,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:47:57,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:47:57,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:47:57,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:47:57,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:47:57,674 INFO L87 Difference]: Start difference. First operand 14875 states and 21262 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:48:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:00,189 INFO L93 Difference]: Finished difference Result 32724 states and 49424 transitions. [2023-12-20 14:48:00,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 14:48:00,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-12-20 14:48:00,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:00,251 INFO L225 Difference]: With dead ends: 32724 [2023-12-20 14:48:00,251 INFO L226 Difference]: Without dead ends: 23164 [2023-12-20 14:48:00,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-20 14:48:00,292 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1891 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1913 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:00,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1913 Valid, 961 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 14:48:00,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23164 states. [2023-12-20 14:48:01,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23164 to 19602. [2023-12-20 14:48:01,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19602 states, 16448 states have (on average 1.4379863813229572) internal successors, (23652), 16677 states have internal predecessors, (23652), 1768 states have call successors, (1768), 1147 states have call predecessors, (1768), 1384 states have return successors, (3070), 1811 states have call predecessors, (3070), 1767 states have call successors, (3070) [2023-12-20 14:48:01,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19602 states to 19602 states and 28490 transitions. [2023-12-20 14:48:01,644 INFO L78 Accepts]: Start accepts. Automaton has 19602 states and 28490 transitions. Word has length 81 [2023-12-20 14:48:01,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:01,644 INFO L495 AbstractCegarLoop]: Abstraction has 19602 states and 28490 transitions. [2023-12-20 14:48:01,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:48:01,644 INFO L276 IsEmpty]: Start isEmpty. Operand 19602 states and 28490 transitions. [2023-12-20 14:48:01,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:48:01,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:01,649 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:48:01,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:48:01,650 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:01,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:01,650 INFO L85 PathProgramCache]: Analyzing trace with hash 420435187, now seen corresponding path program 1 times [2023-12-20 14:48:01,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:01,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13479873] [2023-12-20 14:48:01,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:01,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:01,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:01,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:01,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:01,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:01,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:01,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 14:48:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:01,732 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:48:01,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:01,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13479873] [2023-12-20 14:48:01,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13479873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:01,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:01,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:48:01,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996851904] [2023-12-20 14:48:01,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:01,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:48:01,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:01,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:48:01,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:48:01,733 INFO L87 Difference]: Start difference. First operand 19602 states and 28490 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:48:03,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:03,502 INFO L93 Difference]: Finished difference Result 23702 states and 33473 transitions. [2023-12-20 14:48:03,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 14:48:03,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2023-12-20 14:48:03,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:03,550 INFO L225 Difference]: With dead ends: 23702 [2023-12-20 14:48:03,550 INFO L226 Difference]: Without dead ends: 19255 [2023-12-20 14:48:03,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-12-20 14:48:03,564 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 1518 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:03,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 1071 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:48:03,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19255 states. [2023-12-20 14:48:04,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19255 to 18904. [2023-12-20 14:48:04,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18904 states, 15915 states have (on average 1.4414074772227459) internal successors, (22940), 16139 states have internal predecessors, (22940), 1679 states have call successors, (1679), 1070 states have call predecessors, (1679), 1308 states have return successors, (2889), 1728 states have call predecessors, (2889), 1678 states have call successors, (2889) [2023-12-20 14:48:04,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18904 states to 18904 states and 27508 transitions. [2023-12-20 14:48:04,698 INFO L78 Accepts]: Start accepts. Automaton has 18904 states and 27508 transitions. Word has length 86 [2023-12-20 14:48:04,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:04,698 INFO L495 AbstractCegarLoop]: Abstraction has 18904 states and 27508 transitions. [2023-12-20 14:48:04,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:48:04,698 INFO L276 IsEmpty]: Start isEmpty. Operand 18904 states and 27508 transitions. [2023-12-20 14:48:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 14:48:04,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:04,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:48:04,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:48:04,718 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:04,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:04,719 INFO L85 PathProgramCache]: Analyzing trace with hash 786663259, now seen corresponding path program 1 times [2023-12-20 14:48:04,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:04,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605705626] [2023-12-20 14:48:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:04,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:48:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-20 14:48:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-20 14:48:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 14:48:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-20 14:48:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-20 14:48:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 14:48:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-20 14:48:04,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:04,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605705626] [2023-12-20 14:48:04,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605705626] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:48:04,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577502598] [2023-12-20 14:48:04,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:04,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:48:04,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:48:04,818 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:48:04,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 14:48:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:04,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 14:48:04,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:48:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 14:48:04,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:48:04,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577502598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:04,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:48:04,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-12-20 14:48:04,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615440328] [2023-12-20 14:48:04,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:04,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:48:04,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:04,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:48:04,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:48:04,994 INFO L87 Difference]: Start difference. First operand 18904 states and 27508 transitions. Second operand has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 14:48:05,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:05,879 INFO L93 Difference]: Finished difference Result 20948 states and 30002 transitions. [2023-12-20 14:48:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:48:05,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2023-12-20 14:48:05,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:05,964 INFO L225 Difference]: With dead ends: 20948 [2023-12-20 14:48:05,964 INFO L226 Difference]: Without dead ends: 16356 [2023-12-20 14:48:05,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-20 14:48:05,978 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 31 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:05,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1675 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:48:05,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16356 states. [2023-12-20 14:48:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16356 to 16175. [2023-12-20 14:48:06,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16175 states, 13930 states have (on average 1.473151471643934) internal successors, (20521), 14097 states have internal predecessors, (20521), 1330 states have call successors, (1330), 765 states have call predecessors, (1330), 913 states have return successors, (2390), 1344 states have call predecessors, (2390), 1329 states have call successors, (2390) [2023-12-20 14:48:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16175 states to 16175 states and 24241 transitions. [2023-12-20 14:48:06,927 INFO L78 Accepts]: Start accepts. Automaton has 16175 states and 24241 transitions. Word has length 131 [2023-12-20 14:48:06,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:06,927 INFO L495 AbstractCegarLoop]: Abstraction has 16175 states and 24241 transitions. [2023-12-20 14:48:06,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 14:48:06,927 INFO L276 IsEmpty]: Start isEmpty. Operand 16175 states and 24241 transitions. [2023-12-20 14:48:06,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 14:48:06,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:06,944 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] [2023-12-20 14:48:06,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 14:48:07,148 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,SelfDestructingSolverStorable25 [2023-12-20 14:48:07,149 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:07,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:07,149 INFO L85 PathProgramCache]: Analyzing trace with hash 705688633, now seen corresponding path program 1 times [2023-12-20 14:48:07,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:07,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618971308] [2023-12-20 14:48:07,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:07,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:48:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 14:48:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-20 14:48:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:48:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 14:48:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-20 14:48:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-20 14:48:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:07,268 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-20 14:48:07,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:07,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618971308] [2023-12-20 14:48:07,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618971308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:07,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:07,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:48:07,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461499605] [2023-12-20 14:48:07,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:07,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:48:07,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:07,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:48:07,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:48:07,270 INFO L87 Difference]: Start difference. First operand 16175 states and 24241 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) [2023-12-20 14:48:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:08,269 INFO L93 Difference]: Finished difference Result 16227 states and 24295 transitions. [2023-12-20 14:48:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:48:08,270 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 [2023-12-20 14:48:08,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:08,313 INFO L225 Difference]: With dead ends: 16227 [2023-12-20 14:48:08,314 INFO L226 Difference]: Without dead ends: 15612 [2023-12-20 14:48:08,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:48:08,322 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 402 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:08,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 734 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:48:08,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15612 states. [2023-12-20 14:48:09,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15612 to 15563. [2023-12-20 14:48:09,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15563 states, 13467 states have (on average 1.482290042325685) internal successors, (19962), 13629 states have internal predecessors, (19962), 1258 states have call successors, (1258), 705 states have call predecessors, (1258), 836 states have return successors, (2287), 1260 states have call predecessors, (2287), 1257 states have call successors, (2287) [2023-12-20 14:48:09,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15563 states to 15563 states and 23507 transitions. [2023-12-20 14:48:09,157 INFO L78 Accepts]: Start accepts. Automaton has 15563 states and 23507 transitions. Word has length 133 [2023-12-20 14:48:09,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:09,157 INFO L495 AbstractCegarLoop]: Abstraction has 15563 states and 23507 transitions. [2023-12-20 14:48:09,158 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) [2023-12-20 14:48:09,158 INFO L276 IsEmpty]: Start isEmpty. Operand 15563 states and 23507 transitions. [2023-12-20 14:48:09,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 14:48:09,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:09,175 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-20 14:48:09,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 14:48:09,176 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:09,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:09,176 INFO L85 PathProgramCache]: Analyzing trace with hash 880447385, now seen corresponding path program 1 times [2023-12-20 14:48:09,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:09,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840371925] [2023-12-20 14:48:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:09,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:09,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:09,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:48:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:09,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:48:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:09,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:48:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:48:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:09,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:48:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:48:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:09,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:48:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:48:09,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:09,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840371925] [2023-12-20 14:48:09,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840371925] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:48:09,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964408941] [2023-12-20 14:48:09,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:09,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:48:09,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:48:09,254 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:48:09,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 14:48:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:09,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:48:09,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:48:09,404 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 14:48:09,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:48:09,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964408941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:09,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:48:09,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 14:48:09,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393878253] [2023-12-20 14:48:09,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:09,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:48:09,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:09,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:48:09,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:48:09,406 INFO L87 Difference]: Start difference. First operand 15563 states and 23507 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:48:10,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:10,705 INFO L93 Difference]: Finished difference Result 43832 states and 67704 transitions. [2023-12-20 14:48:10,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:48:10,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2023-12-20 14:48:10,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:10,789 INFO L225 Difference]: With dead ends: 43832 [2023-12-20 14:48:10,789 INFO L226 Difference]: Without dead ends: 29545 [2023-12-20 14:48:10,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:48:10,827 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 317 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:10,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 541 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:48:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29545 states. [2023-12-20 14:48:12,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29545 to 29443. [2023-12-20 14:48:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29443 states, 25577 states have (on average 1.4881338702740743) internal successors, (38062), 25886 states have internal predecessors, (38062), 2332 states have call successors, (2332), 1305 states have call predecessors, (2332), 1532 states have return successors, (4281), 2283 states have call predecessors, (4281), 2331 states have call successors, (4281) [2023-12-20 14:48:12,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29443 states to 29443 states and 44675 transitions. [2023-12-20 14:48:12,433 INFO L78 Accepts]: Start accepts. Automaton has 29443 states and 44675 transitions. Word has length 131 [2023-12-20 14:48:12,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:12,433 INFO L495 AbstractCegarLoop]: Abstraction has 29443 states and 44675 transitions. [2023-12-20 14:48:12,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:48:12,433 INFO L276 IsEmpty]: Start isEmpty. Operand 29443 states and 44675 transitions. [2023-12-20 14:48:12,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 14:48:12,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:12,467 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-20 14:48:12,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 14:48:12,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:48:12,673 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:12,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:12,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2134884167, now seen corresponding path program 1 times [2023-12-20 14:48:12,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:12,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569064688] [2023-12-20 14:48:12,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:12,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:12,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:12,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:48:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:12,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:48:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:12,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:48:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:12,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:48:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:12,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:48:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:12,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:48:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:12,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:48:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 14:48:12,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:12,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569064688] [2023-12-20 14:48:12,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569064688] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:48:12,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190947848] [2023-12-20 14:48:12,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:12,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:48:12,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:48:12,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:48:12,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 14:48:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:12,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:48:12,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:48:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-20 14:48:13,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:48:13,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190947848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:13,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:48:13,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 14:48:13,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115352522] [2023-12-20 14:48:13,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:13,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:48:13,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:13,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:48:13,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:48:13,054 INFO L87 Difference]: Start difference. First operand 29443 states and 44675 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:48:15,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:15,678 INFO L93 Difference]: Finished difference Result 84940 states and 130860 transitions. [2023-12-20 14:48:15,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:48:15,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 131 [2023-12-20 14:48:15,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:15,847 INFO L225 Difference]: With dead ends: 84940 [2023-12-20 14:48:15,847 INFO L226 Difference]: Without dead ends: 56773 [2023-12-20 14:48:15,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:48:15,895 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 312 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:15,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 541 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:48:15,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56773 states. [2023-12-20 14:48:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56773 to 56571. [2023-12-20 14:48:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56571 states, 49337 states have (on average 1.489794677422624) internal successors, (73502), 49940 states have internal predecessors, (73502), 4320 states have call successors, (4320), 2493 states have call predecessors, (4320), 2912 states have return successors, (8034), 4169 states have call predecessors, (8034), 4319 states have call successors, (8034) [2023-12-20 14:48:19,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56571 states to 56571 states and 85856 transitions. [2023-12-20 14:48:19,229 INFO L78 Accepts]: Start accepts. Automaton has 56571 states and 85856 transitions. Word has length 131 [2023-12-20 14:48:19,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:19,230 INFO L495 AbstractCegarLoop]: Abstraction has 56571 states and 85856 transitions. [2023-12-20 14:48:19,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:48:19,230 INFO L276 IsEmpty]: Start isEmpty. Operand 56571 states and 85856 transitions. [2023-12-20 14:48:19,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 14:48:19,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:19,286 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-20 14:48:19,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 14:48:19,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 14:48:19,493 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:19,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:19,493 INFO L85 PathProgramCache]: Analyzing trace with hash 733502361, now seen corresponding path program 1 times [2023-12-20 14:48:19,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:19,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063799917] [2023-12-20 14:48:19,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:19,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:19,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:19,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:48:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:19,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:48:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:19,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:48:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:48:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:19,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:48:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:48:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:19,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:48:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 14:48:19,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:19,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063799917] [2023-12-20 14:48:19,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063799917] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:48:19,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257396338] [2023-12-20 14:48:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:19,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:48:19,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:48:19,578 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:48:19,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 14:48:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:19,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:48:19,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:48:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-20 14:48:19,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:48:19,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257396338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:19,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:48:19,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 14:48:19,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775553298] [2023-12-20 14:48:19,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:19,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:48:19,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:19,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:48:19,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:48:19,698 INFO L87 Difference]: Start difference. First operand 56571 states and 85856 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 14:48:25,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:25,638 INFO L93 Difference]: Finished difference Result 165093 states and 254624 transitions. [2023-12-20 14:48:25,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:48:25,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 131 [2023-12-20 14:48:25,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:26,164 INFO L225 Difference]: With dead ends: 165093 [2023-12-20 14:48:26,164 INFO L226 Difference]: Without dead ends: 109799 [2023-12-20 14:48:26,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:48:26,254 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 218 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:26,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 882 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 14:48:26,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109799 states. [2023-12-20 14:48:32,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109799 to 109799. [2023-12-20 14:48:32,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109799 states, 95910 states have (on average 1.4850484829527681) internal successors, (142431), 96898 states have internal predecessors, (142431), 8215 states have call successors, (8215), 4857 states have call predecessors, (8215), 5672 states have return successors, (17677), 8107 states have call predecessors, (17677), 8214 states have call successors, (17677) [2023-12-20 14:48:32,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109799 states to 109799 states and 168323 transitions. [2023-12-20 14:48:32,820 INFO L78 Accepts]: Start accepts. Automaton has 109799 states and 168323 transitions. Word has length 131 [2023-12-20 14:48:32,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:32,820 INFO L495 AbstractCegarLoop]: Abstraction has 109799 states and 168323 transitions. [2023-12-20 14:48:32,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 14:48:32,821 INFO L276 IsEmpty]: Start isEmpty. Operand 109799 states and 168323 transitions. [2023-12-20 14:48:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-20 14:48:32,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:32,979 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] [2023-12-20 14:48:32,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 14:48:33,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:48:33,186 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:33,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:33,186 INFO L85 PathProgramCache]: Analyzing trace with hash 44612690, now seen corresponding path program 1 times [2023-12-20 14:48:33,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:33,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978879093] [2023-12-20 14:48:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:33,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 14:48:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:48:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-20 14:48:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 14:48:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-20 14:48:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:48:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-20 14:48:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-20 14:48:33,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:33,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978879093] [2023-12-20 14:48:33,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978879093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:48:33,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:48:33,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:48:33,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443725809] [2023-12-20 14:48:33,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:48:33,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:48:33,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:33,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:48:33,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:48:33,282 INFO L87 Difference]: Start difference. First operand 109799 states and 168323 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-20 14:48:38,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:38,626 INFO L93 Difference]: Finished difference Result 111018 states and 169785 transitions. [2023-12-20 14:48:38,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:48:38,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 147 [2023-12-20 14:48:38,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:39,101 INFO L225 Difference]: With dead ends: 111018 [2023-12-20 14:48:39,101 INFO L226 Difference]: Without dead ends: 109908 [2023-12-20 14:48:39,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:48:39,146 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 699 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:39,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 657 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:48:39,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109908 states. [2023-12-20 14:48:45,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109908 to 109805. [2023-12-20 14:48:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109805 states, 95914 states have (on average 1.4850386804846007) internal successors, (142436), 96902 states have internal predecessors, (142436), 8216 states have call successors, (8216), 4858 states have call predecessors, (8216), 5673 states have return successors, (17679), 8108 states have call predecessors, (17679), 8215 states have call successors, (17679) [2023-12-20 14:48:45,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109805 states to 109805 states and 168331 transitions. [2023-12-20 14:48:45,949 INFO L78 Accepts]: Start accepts. Automaton has 109805 states and 168331 transitions. Word has length 147 [2023-12-20 14:48:45,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:45,949 INFO L495 AbstractCegarLoop]: Abstraction has 109805 states and 168331 transitions. [2023-12-20 14:48:45,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-12-20 14:48:45,949 INFO L276 IsEmpty]: Start isEmpty. Operand 109805 states and 168331 transitions. [2023-12-20 14:48:46,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-20 14:48:46,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:46,317 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:48:46,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 14:48:46,317 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:46,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:46,318 INFO L85 PathProgramCache]: Analyzing trace with hash -516087088, now seen corresponding path program 1 times [2023-12-20 14:48:46,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:46,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916077525] [2023-12-20 14:48:46,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:46,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:48:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:48:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:48:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:48:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 14:48:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:48:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-20 14:48:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 14:48:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:48:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:48:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-20 14:48:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:48:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-20 14:48:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-20 14:48:46,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:46,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916077525] [2023-12-20 14:48:46,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916077525] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:48:46,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337247742] [2023-12-20 14:48:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:46,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:48:46,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:48:46,484 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:48:46,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 14:48:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:46,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 14:48:46,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:48:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 14:48:46,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:48:46,855 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-20 14:48:46,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337247742] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:48:46,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:48:46,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-12-20 14:48:46,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064673873] [2023-12-20 14:48:46,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:48:46,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 14:48:46,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:48:46,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 14:48:46,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-20 14:48:46,858 INFO L87 Difference]: Start difference. First operand 109805 states and 168331 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) [2023-12-20 14:48:52,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:48:52,713 INFO L93 Difference]: Finished difference Result 111330 states and 170236 transitions. [2023-12-20 14:48:52,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 14:48:52,713 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 [2023-12-20 14:48:52,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:48:53,156 INFO L225 Difference]: With dead ends: 111330 [2023-12-20 14:48:53,157 INFO L226 Difference]: Without dead ends: 110007 [2023-12-20 14:48:53,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2023-12-20 14:48:53,199 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1279 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:48:53,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 1101 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:48:53,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110007 states. [2023-12-20 14:48:58,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110007 to 109941. [2023-12-20 14:48:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109941 states, 96002 states have (on average 1.4843336597154226) internal successors, (142499), 96990 states have internal predecessors, (142499), 8241 states have call successors, (8241), 4884 states have call predecessors, (8241), 5696 states have return successors, (17727), 8130 states have call predecessors, (17727), 8240 states have call successors, (17727) [2023-12-20 14:48:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109941 states to 109941 states and 168467 transitions. [2023-12-20 14:48:59,389 INFO L78 Accepts]: Start accepts. Automaton has 109941 states and 168467 transitions. Word has length 147 [2023-12-20 14:48:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:48:59,390 INFO L495 AbstractCegarLoop]: Abstraction has 109941 states and 168467 transitions. [2023-12-20 14:48:59,390 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) [2023-12-20 14:48:59,390 INFO L276 IsEmpty]: Start isEmpty. Operand 109941 states and 168467 transitions. [2023-12-20 14:48:59,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-20 14:48:59,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:48:59,611 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:48:59,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 14:48:59,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:48:59,817 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:48:59,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:48:59,817 INFO L85 PathProgramCache]: Analyzing trace with hash 447960789, now seen corresponding path program 1 times [2023-12-20 14:48:59,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:48:59,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456912115] [2023-12-20 14:48:59,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:59,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:48:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:59,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:48:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-20 14:48:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:59,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 14:48:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:59,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 14:48:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:59,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:48:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:59,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:48:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:59,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:48:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:59,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:48:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:59,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-20 14:48:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:59,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-20 14:48:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:48:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-20 14:48:59,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:48:59,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456912115] [2023-12-20 14:48:59,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456912115] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:48:59,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230033708] [2023-12-20 14:48:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:48:59,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:48:59,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:48:59,913 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:48:59,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 14:49:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:00,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:49:00,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:49:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-20 14:49:00,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:49:00,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230033708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:00,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:49:00,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-20 14:49:00,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477496122] [2023-12-20 14:49:00,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:00,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:49:00,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:00,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:49:00,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:00,494 INFO L87 Difference]: Start difference. First operand 109941 states and 168467 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)