/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:06:11,675 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:06:11,737 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:06:11,745 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:06:11,745 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:06:11,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:06:11,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:06:11,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:06:11,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:06:11,779 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:06:11,779 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:06:11,780 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:06:11,780 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:06:11,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:06:11,781 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:06:11,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:06:11,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:06:11,782 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:06:11,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:06:11,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:06:11,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:06:11,782 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:06:11,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:06:11,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:06:11,783 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:06:11,783 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:06:11,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:06:11,783 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:06:11,784 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:06:11,784 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:06:11,785 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:06:11,785 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:06:11,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:06:11,785 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:06:11,785 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:06:11,785 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:06:11,785 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:06:11,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:06:11,786 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:06:11,786 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:06:11,786 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:06:11,786 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:06:11,786 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:06:11,786 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:06:11,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:06:11,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:06:11,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:06:11,977 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:06:11,977 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:06:11,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2023-12-15 18:06:12,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:06:13,129 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:06:13,130 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2023-12-15 18:06:13,150 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77107712f/60e24586fb5e41c4926cde8f253a8e49/FLAGa325b4bba [2023-12-15 18:06:13,160 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77107712f/60e24586fb5e41c4926cde8f253a8e49 [2023-12-15 18:06:13,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:06:13,163 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:06:13,164 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:06:13,164 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:06:13,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:06:13,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:06:13" (1/1) ... [2023-12-15 18:06:13,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2804d8ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13, skipping insertion in model container [2023-12-15 18:06:13,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:06:13" (1/1) ... [2023-12-15 18:06:13,204 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:06:13,302 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.03.cil-2.c[914,927] [2023-12-15 18:06:13,338 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.03.cil-2.c[7115,7128] [2023-12-15 18:06:13,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:06:13,380 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:06:13,387 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.03.cil-2.c[914,927] [2023-12-15 18:06:13,401 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.03.cil-2.c[7115,7128] [2023-12-15 18:06:13,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:06:13,431 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:06:13,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13 WrapperNode [2023-12-15 18:06:13,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:06:13,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:06:13,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:06:13,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:06:13,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13" (1/1) ... [2023-12-15 18:06:13,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13" (1/1) ... [2023-12-15 18:06:13,490 INFO L138 Inliner]: procedures = 59, calls = 66, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 528 [2023-12-15 18:06:13,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:06:13,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:06:13,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:06:13,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:06:13,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13" (1/1) ... [2023-12-15 18:06:13,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13" (1/1) ... [2023-12-15 18:06:13,506 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13" (1/1) ... [2023-12-15 18:06:13,541 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]. [2023-12-15 18:06:13,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13" (1/1) ... [2023-12-15 18:06:13,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13" (1/1) ... [2023-12-15 18:06:13,546 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13" (1/1) ... [2023-12-15 18:06:13,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13" (1/1) ... [2023-12-15 18:06:13,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13" (1/1) ... [2023-12-15 18:06:13,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13" (1/1) ... [2023-12-15 18:06:13,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:06:13,575 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:06:13,575 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:06:13,575 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:06:13,575 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13" (1/1) ... [2023-12-15 18:06:13,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:06:13,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:06:13,609 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) [2023-12-15 18:06:13,666 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 [2023-12-15 18:06:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:06:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 18:06:13,683 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 18:06:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-15 18:06:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-15 18:06:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-15 18:06:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-15 18:06:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-15 18:06:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-15 18:06:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-15 18:06:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-15 18:06:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-15 18:06:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-15 18:06:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-15 18:06:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-15 18:06:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-15 18:06:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-15 18:06:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-15 18:06:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-15 18:06:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-15 18:06:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-15 18:06:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-15 18:06:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-15 18:06:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:06:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-15 18:06:13,688 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-15 18:06:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-15 18:06:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-15 18:06:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:06:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:06:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-15 18:06:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-15 18:06:13,787 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:06:13,789 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:06:14,143 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:06:14,176 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:06:14,176 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-12-15 18:06:14,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:06:14 BoogieIcfgContainer [2023-12-15 18:06:14,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:06:14,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:06:14,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:06:14,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:06:14,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:06:13" (1/3) ... [2023-12-15 18:06:14,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3849c64a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:06:14, skipping insertion in model container [2023-12-15 18:06:14,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:13" (2/3) ... [2023-12-15 18:06:14,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3849c64a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:06:14, skipping insertion in model container [2023-12-15 18:06:14,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:06:14" (3/3) ... [2023-12-15 18:06:14,182 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2023-12-15 18:06:14,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:06:14,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:06:14,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:06:14,235 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;@4bd0d17c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:06:14,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:06:14,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 184 states have (on average 1.6521739130434783) internal successors, (304), 190 states have internal predecessors, (304), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-15 18:06:14,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:14,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:14,254 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] [2023-12-15 18:06:14,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:14,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash -917654171, now seen corresponding path program 1 times [2023-12-15 18:06:14,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:14,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073253978] [2023-12-15 18:06:14,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:14,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:14,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:14,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:14,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:14,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:14,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:14,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:14,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:14,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073253978] [2023-12-15 18:06:14,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073253978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:14,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:14,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:06:14,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90902814] [2023-12-15 18:06:14,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:14,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:06:14,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:14,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:06:14,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:06:14,651 INFO L87 Difference]: Start difference. First operand has 232 states, 184 states have (on average 1.6521739130434783) internal successors, (304), 190 states have internal predecessors, (304), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) 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) [2023-12-15 18:06:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:15,449 INFO L93 Difference]: Finished difference Result 573 states and 901 transitions. [2023-12-15 18:06:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:06:15,451 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 [2023-12-15 18:06:15,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:15,468 INFO L225 Difference]: With dead ends: 573 [2023-12-15 18:06:15,468 INFO L226 Difference]: Without dead ends: 352 [2023-12-15 18:06:15,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:06:15,479 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 641 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:15,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 875 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:06:15,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-15 18:06:15,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 315. [2023-12-15 18:06:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 249 states have (on average 1.502008032128514) internal successors, (374), 255 states have internal predecessors, (374), 42 states have call successors, (42), 21 states have call predecessors, (42), 22 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2023-12-15 18:06:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 461 transitions. [2023-12-15 18:06:15,556 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 461 transitions. Word has length 58 [2023-12-15 18:06:15,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:15,556 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 461 transitions. [2023-12-15 18:06:15,556 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) [2023-12-15 18:06:15,556 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 461 transitions. [2023-12-15 18:06:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:15,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:15,559 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] [2023-12-15 18:06:15,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:06:15,559 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:15,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:15,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2008816218, now seen corresponding path program 1 times [2023-12-15 18:06:15,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:15,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044591429] [2023-12-15 18:06:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:15,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:15,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:15,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:15,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:15,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:15,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:15,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:15,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:15,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044591429] [2023-12-15 18:06:15,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044591429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:15,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:15,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:06:15,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332747055] [2023-12-15 18:06:15,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:15,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:06:15,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:15,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:06:15,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:06:15,679 INFO L87 Difference]: Start difference. First operand 315 states and 461 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) [2023-12-15 18:06:16,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:16,396 INFO L93 Difference]: Finished difference Result 635 states and 911 transitions. [2023-12-15 18:06:16,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:06:16,398 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 [2023-12-15 18:06:16,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:16,406 INFO L225 Difference]: With dead ends: 635 [2023-12-15 18:06:16,406 INFO L226 Difference]: Without dead ends: 473 [2023-12-15 18:06:16,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-15 18:06:16,408 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 840 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:16,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 944 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:06:16,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-15 18:06:16,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 403. [2023-12-15 18:06:16,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 317 states have (on average 1.4826498422712935) internal successors, (470), 325 states have internal predecessors, (470), 53 states have call successors, (53), 28 states have call predecessors, (53), 31 states have return successors, (64), 53 states have call predecessors, (64), 51 states have call successors, (64) [2023-12-15 18:06:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 587 transitions. [2023-12-15 18:06:16,447 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 587 transitions. Word has length 58 [2023-12-15 18:06:16,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:16,447 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 587 transitions. [2023-12-15 18:06:16,447 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) [2023-12-15 18:06:16,447 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 587 transitions. [2023-12-15 18:06:16,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:16,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:16,453 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] [2023-12-15 18:06:16,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:06:16,453 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:16,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:16,453 INFO L85 PathProgramCache]: Analyzing trace with hash -80543516, now seen corresponding path program 1 times [2023-12-15 18:06:16,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:16,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144788488] [2023-12-15 18:06:16,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:16,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:16,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:16,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:16,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:16,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:16,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:16,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:16,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:16,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:16,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144788488] [2023-12-15 18:06:16,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144788488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:16,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:16,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:06:16,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455060083] [2023-12-15 18:06:16,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:16,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:06:16,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:16,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:06:16,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:06:16,612 INFO L87 Difference]: Start difference. First operand 403 states and 587 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) [2023-12-15 18:06:17,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:17,309 INFO L93 Difference]: Finished difference Result 679 states and 976 transitions. [2023-12-15 18:06:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:06:17,309 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 [2023-12-15 18:06:17,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:17,312 INFO L225 Difference]: With dead ends: 679 [2023-12-15 18:06:17,312 INFO L226 Difference]: Without dead ends: 435 [2023-12-15 18:06:17,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:06:17,315 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 405 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:17,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1076 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:06:17,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-12-15 18:06:17,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 407. [2023-12-15 18:06:17,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 320 states have (on average 1.471875) internal successors, (471), 328 states have internal predecessors, (471), 53 states have call successors, (53), 28 states have call predecessors, (53), 32 states have return successors, (65), 54 states have call predecessors, (65), 51 states have call successors, (65) [2023-12-15 18:06:17,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 589 transitions. [2023-12-15 18:06:17,341 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 589 transitions. Word has length 58 [2023-12-15 18:06:17,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:17,341 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 589 transitions. [2023-12-15 18:06:17,342 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) [2023-12-15 18:06:17,342 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 589 transitions. [2023-12-15 18:06:17,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:17,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:17,343 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] [2023-12-15 18:06:17,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:06:17,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:17,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:17,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1970440482, now seen corresponding path program 1 times [2023-12-15 18:06:17,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:17,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416483743] [2023-12-15 18:06:17,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:17,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:17,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:17,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:17,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:17,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:17,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:17,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:17,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:17,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416483743] [2023-12-15 18:06:17,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416483743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:17,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:17,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:06:17,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117447501] [2023-12-15 18:06:17,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:17,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:06:17,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:17,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:06:17,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:06:17,482 INFO L87 Difference]: Start difference. First operand 407 states and 589 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) [2023-12-15 18:06:18,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:18,150 INFO L93 Difference]: Finished difference Result 697 states and 994 transitions. [2023-12-15 18:06:18,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:06:18,151 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 [2023-12-15 18:06:18,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:18,154 INFO L225 Difference]: With dead ends: 697 [2023-12-15 18:06:18,154 INFO L226 Difference]: Without dead ends: 449 [2023-12-15 18:06:18,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:06:18,159 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 276 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:18,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1203 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:06:18,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-12-15 18:06:18,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 419. [2023-12-15 18:06:18,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 329 states have (on average 1.458966565349544) internal successors, (480), 337 states have internal predecessors, (480), 53 states have call successors, (53), 28 states have call predecessors, (53), 35 states have return successors, (68), 57 states have call predecessors, (68), 51 states have call successors, (68) [2023-12-15 18:06:18,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 601 transitions. [2023-12-15 18:06:18,233 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 601 transitions. Word has length 58 [2023-12-15 18:06:18,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:18,234 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 601 transitions. [2023-12-15 18:06:18,234 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) [2023-12-15 18:06:18,235 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 601 transitions. [2023-12-15 18:06:18,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:18,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:18,236 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] [2023-12-15 18:06:18,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:06:18,237 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:18,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:18,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2032480096, now seen corresponding path program 1 times [2023-12-15 18:06:18,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:18,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328570466] [2023-12-15 18:06:18,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:18,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:18,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:18,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:18,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:18,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:18,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:18,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:18,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:18,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328570466] [2023-12-15 18:06:18,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328570466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:18,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:18,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:06:18,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800830512] [2023-12-15 18:06:18,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:18,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:06:18,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:18,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:06:18,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:06:18,373 INFO L87 Difference]: Start difference. First operand 419 states and 601 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) [2023-12-15 18:06:19,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:19,251 INFO L93 Difference]: Finished difference Result 775 states and 1076 transitions. [2023-12-15 18:06:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:06:19,252 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 [2023-12-15 18:06:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:19,254 INFO L225 Difference]: With dead ends: 775 [2023-12-15 18:06:19,254 INFO L226 Difference]: Without dead ends: 517 [2023-12-15 18:06:19,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-12-15 18:06:19,256 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 824 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:19,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 777 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:06:19,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-12-15 18:06:19,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 429. [2023-12-15 18:06:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 337 states have (on average 1.4480712166172107) internal successors, (488), 345 states have internal predecessors, (488), 54 states have call successors, (54), 29 states have call predecessors, (54), 36 states have return successors, (67), 58 states have call predecessors, (67), 52 states have call successors, (67) [2023-12-15 18:06:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 609 transitions. [2023-12-15 18:06:19,289 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 609 transitions. Word has length 58 [2023-12-15 18:06:19,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:19,290 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 609 transitions. [2023-12-15 18:06:19,290 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) [2023-12-15 18:06:19,290 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 609 transitions. [2023-12-15 18:06:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:19,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:19,291 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] [2023-12-15 18:06:19,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:06:19,291 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:19,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:19,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1839785374, now seen corresponding path program 1 times [2023-12-15 18:06:19,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:19,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453076540] [2023-12-15 18:06:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:19,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:19,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:19,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453076540] [2023-12-15 18:06:19,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453076540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:19,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:19,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:19,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444015844] [2023-12-15 18:06:19,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:19,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:19,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:19,429 INFO L87 Difference]: Start difference. First operand 429 states and 609 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) [2023-12-15 18:06:19,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:19,915 INFO L93 Difference]: Finished difference Result 1011 states and 1396 transitions. [2023-12-15 18:06:19,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:06:19,915 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 [2023-12-15 18:06:19,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:19,918 INFO L225 Difference]: With dead ends: 1011 [2023-12-15 18:06:19,918 INFO L226 Difference]: Without dead ends: 744 [2023-12-15 18:06:19,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-15 18:06:19,920 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 807 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:19,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 599 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:06:19,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2023-12-15 18:06:19,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 690. [2023-12-15 18:06:19,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 532 states have (on average 1.4022556390977443) internal successors, (746), 547 states have internal predecessors, (746), 89 states have call successors, (89), 51 states have call predecessors, (89), 67 states have return successors, (124), 98 states have call predecessors, (124), 87 states have call successors, (124) [2023-12-15 18:06:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 959 transitions. [2023-12-15 18:06:19,947 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 959 transitions. Word has length 58 [2023-12-15 18:06:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:19,948 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 959 transitions. [2023-12-15 18:06:19,949 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) [2023-12-15 18:06:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 959 transitions. [2023-12-15 18:06:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:06:19,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:19,950 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] [2023-12-15 18:06:19,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:06:19,950 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:19,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:19,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1289341817, now seen corresponding path program 1 times [2023-12-15 18:06:19,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:19,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277808434] [2023-12-15 18:06:19,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:19,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:19,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:20,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:20,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277808434] [2023-12-15 18:06:20,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277808434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:20,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:20,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:06:20,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601992806] [2023-12-15 18:06:20,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:20,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:20,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:06:20,002 INFO L87 Difference]: Start difference. First operand 690 states and 959 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) [2023-12-15 18:06:20,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:20,457 INFO L93 Difference]: Finished difference Result 1774 states and 2405 transitions. [2023-12-15 18:06:20,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:06:20,458 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 [2023-12-15 18:06:20,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:20,462 INFO L225 Difference]: With dead ends: 1774 [2023-12-15 18:06:20,462 INFO L226 Difference]: Without dead ends: 1255 [2023-12-15 18:06:20,463 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 [2023-12-15 18:06:20,464 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 643 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:20,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 631 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:06:20,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2023-12-15 18:06:20,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1101. [2023-12-15 18:06:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 843 states have (on average 1.3594306049822065) internal successors, (1146), 865 states have internal predecessors, (1146), 138 states have call successors, (138), 93 states have call predecessors, (138), 118 states have return successors, (194), 149 states have call predecessors, (194), 136 states have call successors, (194) [2023-12-15 18:06:20,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1478 transitions. [2023-12-15 18:06:20,503 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1478 transitions. Word has length 59 [2023-12-15 18:06:20,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:20,504 INFO L495 AbstractCegarLoop]: Abstraction has 1101 states and 1478 transitions. [2023-12-15 18:06:20,504 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) [2023-12-15 18:06:20,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1478 transitions. [2023-12-15 18:06:20,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:06:20,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:20,505 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] [2023-12-15 18:06:20,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:06:20,506 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:20,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:20,506 INFO L85 PathProgramCache]: Analyzing trace with hash -574964482, now seen corresponding path program 1 times [2023-12-15 18:06:20,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:20,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510002122] [2023-12-15 18:06:20,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:20,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:20,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:20,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510002122] [2023-12-15 18:06:20,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510002122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:20,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:20,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:06:20,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093287525] [2023-12-15 18:06:20,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:20,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:20,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:20,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:20,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:06:20,564 INFO L87 Difference]: Start difference. First operand 1101 states and 1478 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) [2023-12-15 18:06:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:21,045 INFO L93 Difference]: Finished difference Result 3061 states and 4041 transitions. [2023-12-15 18:06:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:06:21,045 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 [2023-12-15 18:06:21,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:21,052 INFO L225 Difference]: With dead ends: 3061 [2023-12-15 18:06:21,052 INFO L226 Difference]: Without dead ends: 2101 [2023-12-15 18:06:21,053 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 [2023-12-15 18:06:21,054 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 619 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:21,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 571 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:06:21,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2023-12-15 18:06:21,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 1917. [2023-12-15 18:06:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1461 states have (on average 1.326488706365503) internal successors, (1938), 1489 states have internal predecessors, (1938), 232 states have call successors, (232), 179 states have call predecessors, (232), 222 states have return successors, (332), 255 states have call predecessors, (332), 230 states have call successors, (332) [2023-12-15 18:06:21,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2502 transitions. [2023-12-15 18:06:21,120 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2502 transitions. Word has length 60 [2023-12-15 18:06:21,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:21,120 INFO L495 AbstractCegarLoop]: Abstraction has 1917 states and 2502 transitions. [2023-12-15 18:06:21,120 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) [2023-12-15 18:06:21,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2502 transitions. [2023-12-15 18:06:21,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 18:06:21,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:21,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:21,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:06:21,122 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:21,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:21,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1978334883, now seen corresponding path program 1 times [2023-12-15 18:06:21,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:21,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281891012] [2023-12-15 18:06:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:21,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:21,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:21,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281891012] [2023-12-15 18:06:21,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281891012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:21,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:21,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:06:21,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727694751] [2023-12-15 18:06:21,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:21,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:21,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:21,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:06:21,164 INFO L87 Difference]: Start difference. First operand 1917 states and 2502 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:21,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:21,657 INFO L93 Difference]: Finished difference Result 4581 states and 5906 transitions. [2023-12-15 18:06:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:06:21,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-12-15 18:06:21,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:21,667 INFO L225 Difference]: With dead ends: 4581 [2023-12-15 18:06:21,668 INFO L226 Difference]: Without dead ends: 2825 [2023-12-15 18:06:21,671 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 [2023-12-15 18:06:21,672 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 631 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:21,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 643 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:06:21,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2023-12-15 18:06:21,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2583. [2023-12-15 18:06:21,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 1963 states have (on average 1.3122771268466633) internal successors, (2576), 1999 states have internal predecessors, (2576), 312 states have call successors, (312), 249 states have call predecessors, (312), 306 states have return successors, (441), 341 states have call predecessors, (441), 310 states have call successors, (441) [2023-12-15 18:06:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 3329 transitions. [2023-12-15 18:06:21,766 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 3329 transitions. Word has length 66 [2023-12-15 18:06:21,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:21,766 INFO L495 AbstractCegarLoop]: Abstraction has 2583 states and 3329 transitions. [2023-12-15 18:06:21,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:21,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 3329 transitions. [2023-12-15 18:06:21,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-15 18:06:21,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:21,768 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] [2023-12-15 18:06:21,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:06:21,768 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:21,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:21,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1715112493, now seen corresponding path program 1 times [2023-12-15 18:06:21,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:21,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136381078] [2023-12-15 18:06:21,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:21,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:21,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:21,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136381078] [2023-12-15 18:06:21,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136381078] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:21,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:21,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:21,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908406970] [2023-12-15 18:06:21,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:21,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:21,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:21,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:21,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:21,830 INFO L87 Difference]: Start difference. First operand 2583 states and 3329 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) [2023-12-15 18:06:22,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:22,384 INFO L93 Difference]: Finished difference Result 3303 states and 4206 transitions. [2023-12-15 18:06:22,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:06:22,385 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 [2023-12-15 18:06:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:22,395 INFO L225 Difference]: With dead ends: 3303 [2023-12-15 18:06:22,395 INFO L226 Difference]: Without dead ends: 3300 [2023-12-15 18:06:22,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-15 18:06:22,397 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 1132 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:22,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 483 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:06:22,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2023-12-15 18:06:22,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 3033. [2023-12-15 18:06:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 2304 states have (on average 1.3038194444444444) internal successors, (3004), 2345 states have internal predecessors, (3004), 362 states have call successors, (362), 293 states have call predecessors, (362), 365 states have return successors, (520), 401 states have call predecessors, (520), 361 states have call successors, (520) [2023-12-15 18:06:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 3886 transitions. [2023-12-15 18:06:22,540 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 3886 transitions. Word has length 67 [2023-12-15 18:06:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:22,540 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 3886 transitions. [2023-12-15 18:06:22,540 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) [2023-12-15 18:06:22,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 3886 transitions. [2023-12-15 18:06:22,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-15 18:06:22,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:22,541 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] [2023-12-15 18:06:22,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:06:22,542 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:22,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:22,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1629656985, now seen corresponding path program 1 times [2023-12-15 18:06:22,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:22,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014986886] [2023-12-15 18:06:22,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:22,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:22,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:22,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014986886] [2023-12-15 18:06:22,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014986886] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:06:22,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878400678] [2023-12-15 18:06:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:22,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:06:22,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:06:22,633 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) [2023-12-15 18:06:22,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:06:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 18:06:22,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:06:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:22,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:06:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:22,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878400678] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:06:22,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:06:22,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-12-15 18:06:22,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489970360] [2023-12-15 18:06:22,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:06:22,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:06:22,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:22,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:06:22,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:06:22,972 INFO L87 Difference]: Start difference. First operand 3033 states and 3886 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) [2023-12-15 18:06:24,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:24,241 INFO L93 Difference]: Finished difference Result 7100 states and 8998 transitions. [2023-12-15 18:06:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 18:06:24,242 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 [2023-12-15 18:06:24,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:24,263 INFO L225 Difference]: With dead ends: 7100 [2023-12-15 18:06:24,264 INFO L226 Difference]: Without dead ends: 7097 [2023-12-15 18:06:24,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2023-12-15 18:06:24,267 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 1331 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:24,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 1195 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1535 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:06:24,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7097 states. [2023-12-15 18:06:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7097 to 4659. [2023-12-15 18:06:24,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 3544 states have (on average 1.3024830699774266) internal successors, (4616), 3607 states have internal predecessors, (4616), 546 states have call successors, (546), 451 states have call predecessors, (546), 567 states have return successors, (798), 607 states have call predecessors, (798), 545 states have call successors, (798) [2023-12-15 18:06:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 5960 transitions. [2023-12-15 18:06:24,521 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 5960 transitions. Word has length 68 [2023-12-15 18:06:24,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:24,521 INFO L495 AbstractCegarLoop]: Abstraction has 4659 states and 5960 transitions. [2023-12-15 18:06:24,522 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) [2023-12-15 18:06:24,522 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 5960 transitions. [2023-12-15 18:06:24,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 18:06:24,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:24,523 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] [2023-12-15 18:06:24,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:06:24,729 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 [2023-12-15 18:06:24,729 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:24,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:24,730 INFO L85 PathProgramCache]: Analyzing trace with hash 228963667, now seen corresponding path program 2 times [2023-12-15 18:06:24,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:24,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700595879] [2023-12-15 18:06:24,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:24,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:24,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:24,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:24,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:24,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:24,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:24,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:24,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:24,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:24,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700595879] [2023-12-15 18:06:24,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700595879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:24,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:24,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:06:24,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921010534] [2023-12-15 18:06:24,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:24,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:24,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:24,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:24,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:06:24,773 INFO L87 Difference]: Start difference. First operand 4659 states and 5960 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) [2023-12-15 18:06:25,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:25,279 INFO L93 Difference]: Finished difference Result 7115 states and 9107 transitions. [2023-12-15 18:06:25,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:06:25,280 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 [2023-12-15 18:06:25,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:25,289 INFO L225 Difference]: With dead ends: 7115 [2023-12-15 18:06:25,290 INFO L226 Difference]: Without dead ends: 3412 [2023-12-15 18:06:25,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:06:25,296 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 690 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:25,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 561 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:06:25,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2023-12-15 18:06:25,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 3183. [2023-12-15 18:06:25,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3183 states, 2424 states have (on average 1.2821782178217822) internal successors, (3108), 2465 states have internal predecessors, (3108), 378 states have call successors, (378), 307 states have call predecessors, (378), 379 states have return successors, (524), 417 states have call predecessors, (524), 377 states have call successors, (524) [2023-12-15 18:06:25,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4010 transitions. [2023-12-15 18:06:25,525 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 4010 transitions. Word has length 71 [2023-12-15 18:06:25,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:25,525 INFO L495 AbstractCegarLoop]: Abstraction has 3183 states and 4010 transitions. [2023-12-15 18:06:25,525 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) [2023-12-15 18:06:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 4010 transitions. [2023-12-15 18:06:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 18:06:25,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:25,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:25,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:06:25,527 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:25,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:25,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1733702944, now seen corresponding path program 1 times [2023-12-15 18:06:25,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:25,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829922769] [2023-12-15 18:06:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:25,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:25,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:25,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 18:06:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:25,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:06:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:25,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 18:06:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:25,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:25,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:25,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829922769] [2023-12-15 18:06:25,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829922769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:25,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:25,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:06:25,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865155692] [2023-12-15 18:06:25,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:25,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:25,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:25,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:25,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:06:25,626 INFO L87 Difference]: Start difference. First operand 3183 states and 4010 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-12-15 18:06:26,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:26,694 INFO L93 Difference]: Finished difference Result 3524 states and 4550 transitions. [2023-12-15 18:06:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:06:26,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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 71 [2023-12-15 18:06:26,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:26,715 INFO L225 Difference]: With dead ends: 3524 [2023-12-15 18:06:26,716 INFO L226 Difference]: Without dead ends: 3394 [2023-12-15 18:06:26,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:06:26,718 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 698 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:26,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 615 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:06:26,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3394 states. [2023-12-15 18:06:26,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3394 to 3315. [2023-12-15 18:06:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 2537 states have (on average 1.2948364209696492) internal successors, (3285), 2579 states have internal predecessors, (3285), 390 states have call successors, (390), 313 states have call predecessors, (390), 386 states have return successors, (539), 429 states have call predecessors, (539), 389 states have call successors, (539) [2023-12-15 18:06:26,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 4214 transitions. [2023-12-15 18:06:26,934 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 4214 transitions. Word has length 71 [2023-12-15 18:06:26,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:26,934 INFO L495 AbstractCegarLoop]: Abstraction has 3315 states and 4214 transitions. [2023-12-15 18:06:26,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 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) [2023-12-15 18:06:26,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 4214 transitions. [2023-12-15 18:06:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 18:06:26,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:26,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:26,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:06:26,937 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:26,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:26,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1860015964, now seen corresponding path program 1 times [2023-12-15 18:06:26,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:26,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413473802] [2023-12-15 18:06:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:26,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 18:06:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:27,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:06:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:27,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 18:06:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:27,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:27,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:27,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413473802] [2023-12-15 18:06:27,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413473802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:27,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:27,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:27,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164928533] [2023-12-15 18:06:27,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:27,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:27,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:27,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:27,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:27,012 INFO L87 Difference]: Start difference. First operand 3315 states and 4214 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-15 18:06:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:28,209 INFO L93 Difference]: Finished difference Result 3829 states and 5020 transitions. [2023-12-15 18:06:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:06:28,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-12-15 18:06:28,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:28,219 INFO L225 Difference]: With dead ends: 3829 [2023-12-15 18:06:28,219 INFO L226 Difference]: Without dead ends: 3567 [2023-12-15 18:06:28,220 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 [2023-12-15 18:06:28,220 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 697 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:28,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1021 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:06:28,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2023-12-15 18:06:28,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 3438. [2023-12-15 18:06:28,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3438 states, 2641 states have (on average 1.3040514956455889) internal successors, (3444), 2684 states have internal predecessors, (3444), 402 states have call successors, (402), 319 states have call predecessors, (402), 393 states have return successors, (553), 442 states have call predecessors, (553), 401 states have call successors, (553) [2023-12-15 18:06:28,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3438 states to 3438 states and 4399 transitions. [2023-12-15 18:06:28,446 INFO L78 Accepts]: Start accepts. Automaton has 3438 states and 4399 transitions. Word has length 71 [2023-12-15 18:06:28,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:28,447 INFO L495 AbstractCegarLoop]: Abstraction has 3438 states and 4399 transitions. [2023-12-15 18:06:28,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-15 18:06:28,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3438 states and 4399 transitions. [2023-12-15 18:06:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 18:06:28,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:28,449 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] [2023-12-15 18:06:28,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:06:28,449 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:28,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:28,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1426286878, now seen corresponding path program 1 times [2023-12-15 18:06:28,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:28,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529922992] [2023-12-15 18:06:28,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:28,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:28,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:28,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 18:06:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:28,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:06:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 18:06:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:28,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:28,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529922992] [2023-12-15 18:06:28,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529922992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:28,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:28,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:28,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151547473] [2023-12-15 18:06:28,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:28,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:28,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:28,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:28,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:28,533 INFO L87 Difference]: Start difference. First operand 3438 states and 4399 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-15 18:06:29,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:29,770 INFO L93 Difference]: Finished difference Result 4275 states and 5707 transitions. [2023-12-15 18:06:29,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:06:29,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-12-15 18:06:29,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:29,780 INFO L225 Difference]: With dead ends: 4275 [2023-12-15 18:06:29,781 INFO L226 Difference]: Without dead ends: 3890 [2023-12-15 18:06:29,784 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 [2023-12-15 18:06:29,784 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 695 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:29,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1019 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:06:29,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2023-12-15 18:06:30,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 3685. [2023-12-15 18:06:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3685 states, 2850 states have (on average 1.3203508771929824) internal successors, (3763), 2895 states have internal predecessors, (3763), 426 states have call successors, (426), 331 states have call predecessors, (426), 407 states have return successors, (585), 468 states have call predecessors, (585), 425 states have call successors, (585) [2023-12-15 18:06:30,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 4774 transitions. [2023-12-15 18:06:30,037 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 4774 transitions. Word has length 71 [2023-12-15 18:06:30,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:30,037 INFO L495 AbstractCegarLoop]: Abstraction has 3685 states and 4774 transitions. [2023-12-15 18:06:30,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-15 18:06:30,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 4774 transitions. [2023-12-15 18:06:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 18:06:30,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:30,040 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] [2023-12-15 18:06:30,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:06:30,040 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:30,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:30,040 INFO L85 PathProgramCache]: Analyzing trace with hash -165369628, now seen corresponding path program 1 times [2023-12-15 18:06:30,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:30,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175526974] [2023-12-15 18:06:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:30,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 18:06:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:06:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 18:06:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:30,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:30,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175526974] [2023-12-15 18:06:30,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175526974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:30,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:30,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:30,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325657251] [2023-12-15 18:06:30,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:30,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:30,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:30,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:30,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:30,128 INFO L87 Difference]: Start difference. First operand 3685 states and 4774 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-15 18:06:30,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:30,864 INFO L93 Difference]: Finished difference Result 4512 states and 6075 transitions. [2023-12-15 18:06:30,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:06:30,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-12-15 18:06:30,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:30,874 INFO L225 Difference]: With dead ends: 4512 [2023-12-15 18:06:30,875 INFO L226 Difference]: Without dead ends: 3880 [2023-12-15 18:06:30,877 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 [2023-12-15 18:06:30,877 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 578 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:30,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 629 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:06:30,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3880 states. [2023-12-15 18:06:31,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3880 to 3685. [2023-12-15 18:06:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3685 states, 2850 states have (on average 1.31859649122807) internal successors, (3758), 2895 states have internal predecessors, (3758), 426 states have call successors, (426), 331 states have call predecessors, (426), 407 states have return successors, (585), 468 states have call predecessors, (585), 425 states have call successors, (585) [2023-12-15 18:06:31,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 4769 transitions. [2023-12-15 18:06:31,126 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 4769 transitions. Word has length 71 [2023-12-15 18:06:31,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:31,126 INFO L495 AbstractCegarLoop]: Abstraction has 3685 states and 4769 transitions. [2023-12-15 18:06:31,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-15 18:06:31,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 4769 transitions. [2023-12-15 18:06:31,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 18:06:31,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:31,130 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] [2023-12-15 18:06:31,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:06:31,130 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:31,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:31,130 INFO L85 PathProgramCache]: Analyzing trace with hash -124694878, now seen corresponding path program 1 times [2023-12-15 18:06:31,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:31,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184753835] [2023-12-15 18:06:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:31,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:31,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:31,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 18:06:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:06:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 18:06:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:31,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:31,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:31,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184753835] [2023-12-15 18:06:31,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184753835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:31,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:31,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:31,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420261354] [2023-12-15 18:06:31,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:31,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:31,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:31,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:31,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:31,206 INFO L87 Difference]: Start difference. First operand 3685 states and 4769 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-15 18:06:32,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:32,509 INFO L93 Difference]: Finished difference Result 5303 states and 7264 transitions. [2023-12-15 18:06:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:06:32,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-12-15 18:06:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:32,519 INFO L225 Difference]: With dead ends: 5303 [2023-12-15 18:06:32,520 INFO L226 Difference]: Without dead ends: 4671 [2023-12-15 18:06:32,522 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 [2023-12-15 18:06:32,522 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 712 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:32,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1012 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:06:32,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4671 states. [2023-12-15 18:06:32,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4671 to 4176. [2023-12-15 18:06:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4176 states, 3269 states have (on average 1.3438360354848577) internal successors, (4393), 3318 states have internal predecessors, (4393), 470 states have call successors, (470), 355 states have call predecessors, (470), 435 states have return successors, (651), 516 states have call predecessors, (651), 469 states have call successors, (651) [2023-12-15 18:06:32,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4176 states to 4176 states and 5514 transitions. [2023-12-15 18:06:32,870 INFO L78 Accepts]: Start accepts. Automaton has 4176 states and 5514 transitions. Word has length 71 [2023-12-15 18:06:32,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:32,870 INFO L495 AbstractCegarLoop]: Abstraction has 4176 states and 5514 transitions. [2023-12-15 18:06:32,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-15 18:06:32,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4176 states and 5514 transitions. [2023-12-15 18:06:32,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 18:06:32,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:32,873 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] [2023-12-15 18:06:32,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:06:32,873 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:32,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:32,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1262090532, now seen corresponding path program 1 times [2023-12-15 18:06:32,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:32,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953870626] [2023-12-15 18:06:32,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:32,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:32,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:32,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 18:06:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:32,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:06:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:32,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 18:06:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:32,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:32,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953870626] [2023-12-15 18:06:32,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953870626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:32,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:32,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:32,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121934456] [2023-12-15 18:06:32,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:32,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:32,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:32,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:32,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:32,949 INFO L87 Difference]: Start difference. First operand 4176 states and 5514 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-15 18:06:34,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:34,195 INFO L93 Difference]: Finished difference Result 7084 states and 9993 transitions. [2023-12-15 18:06:34,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:06:34,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-12-15 18:06:34,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:34,208 INFO L225 Difference]: With dead ends: 7084 [2023-12-15 18:06:34,208 INFO L226 Difference]: Without dead ends: 5961 [2023-12-15 18:06:34,212 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 [2023-12-15 18:06:34,212 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 768 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:34,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 1008 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:06:34,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2023-12-15 18:06:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5114. [2023-12-15 18:06:34,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5114 states, 4067 states have (on average 1.3766904352102287) internal successors, (5599), 4124 states have internal predecessors, (5599), 554 states have call successors, (554), 403 states have call predecessors, (554), 491 states have return successors, (797), 608 states have call predecessors, (797), 553 states have call successors, (797) [2023-12-15 18:06:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 6950 transitions. [2023-12-15 18:06:34,545 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 6950 transitions. Word has length 71 [2023-12-15 18:06:34,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:34,545 INFO L495 AbstractCegarLoop]: Abstraction has 5114 states and 6950 transitions. [2023-12-15 18:06:34,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-15 18:06:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 6950 transitions. [2023-12-15 18:06:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 18:06:34,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:34,548 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] [2023-12-15 18:06:34,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:06:34,549 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:34,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:34,549 INFO L85 PathProgramCache]: Analyzing trace with hash 2138109538, now seen corresponding path program 1 times [2023-12-15 18:06:34,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:34,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914602024] [2023-12-15 18:06:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:34,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:34,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:34,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 18:06:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:34,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:06:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:34,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 18:06:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:34,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:34,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:34,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914602024] [2023-12-15 18:06:34,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914602024] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:34,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:34,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:34,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389392156] [2023-12-15 18:06:34,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:34,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:34,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:34,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:34,630 INFO L87 Difference]: Start difference. First operand 5114 states and 6950 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-15 18:06:35,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:35,904 INFO L93 Difference]: Finished difference Result 10204 states and 14801 transitions. [2023-12-15 18:06:35,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:06:35,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-12-15 18:06:35,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:35,924 INFO L225 Difference]: With dead ends: 10204 [2023-12-15 18:06:35,925 INFO L226 Difference]: Without dead ends: 8143 [2023-12-15 18:06:35,930 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 [2023-12-15 18:06:35,930 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 692 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:35,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1012 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:06:35,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8143 states. [2023-12-15 18:06:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8143 to 7045. [2023-12-15 18:06:36,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7045 states, 5726 states have (on average 1.4182675515193852) internal successors, (8121), 5799 states have internal predecessors, (8121), 714 states have call successors, (714), 499 states have call predecessors, (714), 603 states have return successors, (1135), 784 states have call predecessors, (1135), 713 states have call successors, (1135) [2023-12-15 18:06:36,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7045 states to 7045 states and 9970 transitions. [2023-12-15 18:06:36,356 INFO L78 Accepts]: Start accepts. Automaton has 7045 states and 9970 transitions. Word has length 71 [2023-12-15 18:06:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:36,356 INFO L495 AbstractCegarLoop]: Abstraction has 7045 states and 9970 transitions. [2023-12-15 18:06:36,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-15 18:06:36,357 INFO L276 IsEmpty]: Start isEmpty. Operand 7045 states and 9970 transitions. [2023-12-15 18:06:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 18:06:36,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:36,361 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] [2023-12-15 18:06:36,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:06:36,362 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:36,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:36,362 INFO L85 PathProgramCache]: Analyzing trace with hash -618517728, now seen corresponding path program 1 times [2023-12-15 18:06:36,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:36,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749864138] [2023-12-15 18:06:36,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:36,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:36,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:36,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 18:06:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:36,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:06:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:36,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 18:06:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:36,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:36,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:36,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749864138] [2023-12-15 18:06:36,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749864138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:36,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:36,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:36,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870482549] [2023-12-15 18:06:36,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:36,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:36,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:36,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:36,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:36,449 INFO L87 Difference]: Start difference. First operand 7045 states and 9970 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-15 18:06:38,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:38,333 INFO L93 Difference]: Finished difference Result 21450 states and 32751 transitions. [2023-12-15 18:06:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 18:06:38,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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 71 [2023-12-15 18:06:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:38,378 INFO L225 Difference]: With dead ends: 21450 [2023-12-15 18:06:38,378 INFO L226 Difference]: Without dead ends: 17459 [2023-12-15 18:06:38,394 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 [2023-12-15 18:06:38,394 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 1463 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:38,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 859 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:06:38,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17459 states. [2023-12-15 18:06:39,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17459 to 14731. [2023-12-15 18:06:39,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14731 states, 12277 states have (on average 1.460047242811762) internal successors, (17925), 12465 states have internal predecessors, (17925), 1387 states have call successors, (1387), 897 states have call predecessors, (1387), 1065 states have return successors, (2460), 1406 states have call predecessors, (2460), 1386 states have call successors, (2460) [2023-12-15 18:06:39,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14731 states to 14731 states and 21772 transitions. [2023-12-15 18:06:39,242 INFO L78 Accepts]: Start accepts. Automaton has 14731 states and 21772 transitions. Word has length 71 [2023-12-15 18:06:39,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:39,242 INFO L495 AbstractCegarLoop]: Abstraction has 14731 states and 21772 transitions. [2023-12-15 18:06:39,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 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) [2023-12-15 18:06:39,243 INFO L276 IsEmpty]: Start isEmpty. Operand 14731 states and 21772 transitions. [2023-12-15 18:06:39,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-15 18:06:39,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:39,248 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] [2023-12-15 18:06:39,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:06:39,249 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:39,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1810871584, now seen corresponding path program 1 times [2023-12-15 18:06:39,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:39,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61539403] [2023-12-15 18:06:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:39,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:39,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:39,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:39,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:39,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:06:39,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:39,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61539403] [2023-12-15 18:06:39,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61539403] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:39,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:39,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:06:39,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299180569] [2023-12-15 18:06:39,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:39,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:06:39,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:39,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:06:39,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:06:39,321 INFO L87 Difference]: Start difference. First operand 14731 states and 21772 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) [2023-12-15 18:06:41,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:41,308 INFO L93 Difference]: Finished difference Result 21029 states and 29615 transitions. [2023-12-15 18:06:41,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 18:06:41,309 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 [2023-12-15 18:06:41,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:41,348 INFO L225 Difference]: With dead ends: 21029 [2023-12-15 18:06:41,348 INFO L226 Difference]: Without dead ends: 16792 [2023-12-15 18:06:41,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-12-15 18:06:41,360 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 838 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:41,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 962 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:06:41,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16792 states. [2023-12-15 18:06:42,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16792 to 16472. [2023-12-15 18:06:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16472 states, 13561 states have (on average 1.4360297913133249) internal successors, (19474), 13792 states have internal predecessors, (19474), 1591 states have call successors, (1591), 1071 states have call predecessors, (1591), 1318 states have return successors, (2842), 1646 states have call predecessors, (2842), 1590 states have call successors, (2842) [2023-12-15 18:06:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16472 states to 16472 states and 23907 transitions. [2023-12-15 18:06:42,339 INFO L78 Accepts]: Start accepts. Automaton has 16472 states and 23907 transitions. Word has length 76 [2023-12-15 18:06:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:42,340 INFO L495 AbstractCegarLoop]: Abstraction has 16472 states and 23907 transitions. [2023-12-15 18:06:42,340 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) [2023-12-15 18:06:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 16472 states and 23907 transitions. [2023-12-15 18:06:42,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 18:06:42,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:42,350 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] [2023-12-15 18:06:42,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:06:42,350 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:42,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:42,350 INFO L85 PathProgramCache]: Analyzing trace with hash -826737294, now seen corresponding path program 1 times [2023-12-15 18:06:42,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:42,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003590264] [2023-12-15 18:06:42,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:42,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 18:06:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,425 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:06:42,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:42,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003590264] [2023-12-15 18:06:42,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003590264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:42,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:42,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:06:42,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936981979] [2023-12-15 18:06:42,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:42,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:06:42,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:42,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:06:42,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:06:42,428 INFO L87 Difference]: Start difference. First operand 16472 states and 23907 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) [2023-12-15 18:06:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:44,001 INFO L93 Difference]: Finished difference Result 20143 states and 28415 transitions. [2023-12-15 18:06:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 18:06:44,002 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 [2023-12-15 18:06:44,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:44,038 INFO L225 Difference]: With dead ends: 20143 [2023-12-15 18:06:44,038 INFO L226 Difference]: Without dead ends: 15963 [2023-12-15 18:06:44,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-12-15 18:06:44,052 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 1426 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:44,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 986 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:06:44,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15963 states. [2023-12-15 18:06:45,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15963 to 15629. [2023-12-15 18:06:45,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15629 states, 12931 states have (on average 1.4425798468795916) internal successors, (18654), 13144 states have internal predecessors, (18654), 1492 states have call successors, (1492), 986 states have call predecessors, (1492), 1204 states have return successors, (2620), 1536 states have call predecessors, (2620), 1491 states have call successors, (2620) [2023-12-15 18:06:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15629 states to 15629 states and 22766 transitions. [2023-12-15 18:06:45,077 INFO L78 Accepts]: Start accepts. Automaton has 15629 states and 22766 transitions. Word has length 86 [2023-12-15 18:06:45,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:45,077 INFO L495 AbstractCegarLoop]: Abstraction has 15629 states and 22766 transitions. [2023-12-15 18:06:45,077 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) [2023-12-15 18:06:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 15629 states and 22766 transitions. [2023-12-15 18:06:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-15 18:06:45,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:45,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:45,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:06:45,099 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:45,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:45,100 INFO L85 PathProgramCache]: Analyzing trace with hash -591143121, now seen corresponding path program 1 times [2023-12-15 18:06:45,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:45,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760380487] [2023-12-15 18:06:45,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:45,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 18:06:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:06:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 18:06:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:06:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:06:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 18:06:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,186 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:06:45,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:45,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760380487] [2023-12-15 18:06:45,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760380487] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:06:45,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178728472] [2023-12-15 18:06:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:45,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:06:45,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:06:45,188 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) [2023-12-15 18:06:45,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:06:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:06:45,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:06:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-15 18:06:45,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:06:45,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178728472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:45,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:06:45,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 18:06:45,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989126378] [2023-12-15 18:06:45,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:45,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:06:45,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:45,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:06:45,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:45,350 INFO L87 Difference]: Start difference. First operand 15629 states and 22766 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2023-12-15 18:06:46,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:46,680 INFO L93 Difference]: Finished difference Result 38666 states and 58738 transitions. [2023-12-15 18:06:46,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:06:46,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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 115 [2023-12-15 18:06:46,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:46,761 INFO L225 Difference]: With dead ends: 38666 [2023-12-15 18:06:46,761 INFO L226 Difference]: Without dead ends: 26989 [2023-12-15 18:06:46,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:46,792 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 285 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:46,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 477 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:06:46,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26989 states. [2023-12-15 18:06:48,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26989 to 26887. [2023-12-15 18:06:48,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26887 states, 22535 states have (on average 1.4635899711559797) internal successors, (32982), 22895 states have internal predecessors, (32982), 2458 states have call successors, (2458), 1578 states have call predecessors, (2458), 1892 states have return successors, (4455), 2451 states have call predecessors, (4455), 2457 states have call successors, (4455) [2023-12-15 18:06:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26887 states to 26887 states and 39895 transitions. [2023-12-15 18:06:48,281 INFO L78 Accepts]: Start accepts. Automaton has 26887 states and 39895 transitions. Word has length 115 [2023-12-15 18:06:48,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:48,281 INFO L495 AbstractCegarLoop]: Abstraction has 26887 states and 39895 transitions. [2023-12-15 18:06:48,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2023-12-15 18:06:48,281 INFO L276 IsEmpty]: Start isEmpty. Operand 26887 states and 39895 transitions. [2023-12-15 18:06:48,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-15 18:06:48,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:48,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:48,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 18:06:48,519 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,SelfDestructingSolverStorable22 [2023-12-15 18:06:48,519 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:48,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:48,521 INFO L85 PathProgramCache]: Analyzing trace with hash -820464275, now seen corresponding path program 1 times [2023-12-15 18:06:48,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:48,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356888335] [2023-12-15 18:06:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:48,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-15 18:06:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-12-15 18:06:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-15 18:06:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-15 18:06:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-12-15 18:06:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 18:06:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-15 18:06:48,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:48,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356888335] [2023-12-15 18:06:48,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356888335] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:06:48,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453025470] [2023-12-15 18:06:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:48,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:06:48,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:06:48,603 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) [2023-12-15 18:06:48,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:06:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:06:48,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:06:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-15 18:06:48,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:06:48,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453025470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:48,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:06:48,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-15 18:06:48,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817314681] [2023-12-15 18:06:48,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:48,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:06:48,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:06:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:48,823 INFO L87 Difference]: Start difference. First operand 26887 states and 39895 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-12-15 18:06:51,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:51,158 INFO L93 Difference]: Finished difference Result 71700 states and 109896 transitions. [2023-12-15 18:06:51,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:06:51,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 115 [2023-12-15 18:06:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:51,277 INFO L225 Difference]: With dead ends: 71700 [2023-12-15 18:06:51,277 INFO L226 Difference]: Without dead ends: 48766 [2023-12-15 18:06:51,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:51,317 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 182 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:51,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 785 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:06:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48766 states. [2023-12-15 18:06:53,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48766 to 48766. [2023-12-15 18:06:53,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48766 states, 41215 states have (on average 1.4705568361033605) internal successors, (60609), 41768 states have internal predecessors, (60609), 4289 states have call successors, (4289), 2742 states have call predecessors, (4289), 3260 states have return successors, (8944), 4325 states have call predecessors, (8944), 4288 states have call successors, (8944) [2023-12-15 18:06:53,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48766 states to 48766 states and 73842 transitions. [2023-12-15 18:06:54,001 INFO L78 Accepts]: Start accepts. Automaton has 48766 states and 73842 transitions. Word has length 115 [2023-12-15 18:06:54,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:54,001 INFO L495 AbstractCegarLoop]: Abstraction has 48766 states and 73842 transitions. [2023-12-15 18:06:54,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-12-15 18:06:54,001 INFO L276 IsEmpty]: Start isEmpty. Operand 48766 states and 73842 transitions. [2023-12-15 18:06:54,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 18:06:54,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:54,063 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] [2023-12-15 18:06:54,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 18:06:54,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:06:54,268 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:54,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:54,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1385852961, now seen corresponding path program 1 times [2023-12-15 18:06:54,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:54,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571256474] [2023-12-15 18:06:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:54,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 18:06:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-15 18:06:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-15 18:06:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-15 18:06:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 18:06:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-15 18:06:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-15 18:06:54,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:54,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571256474] [2023-12-15 18:06:54,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571256474] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:06:54,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051145192] [2023-12-15 18:06:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:54,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:06:54,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:06:54,390 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) [2023-12-15 18:06:54,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 18:06:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 18:06:54,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:06:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 18:06:54,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:06:54,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051145192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:54,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:06:54,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-12-15 18:06:54,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59141441] [2023-12-15 18:06:54,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:54,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:54,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:54,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:54,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-15 18:06:54,523 INFO L87 Difference]: Start difference. First operand 48766 states and 73842 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) [2023-12-15 18:06:56,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:56,553 INFO L93 Difference]: Finished difference Result 50738 states and 76271 transitions. [2023-12-15 18:06:56,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:06:56,553 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 [2023-12-15 18:06:56,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:56,778 INFO L225 Difference]: With dead ends: 50738 [2023-12-15 18:06:56,778 INFO L226 Difference]: Without dead ends: 46822 [2023-12-15 18:06:56,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-15 18:06:56,797 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 32 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:56,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1509 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:06:56,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46822 states. [2023-12-15 18:06:59,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46822 to 46697. [2023-12-15 18:06:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46697 states, 39723 states have (on average 1.4789920197366764) internal successors, (58750), 40225 states have internal predecessors, (58750), 4013 states have call successors, (4013), 2508 states have call predecessors, (4013), 2959 states have return successors, (8551), 4027 states have call predecessors, (8551), 4012 states have call successors, (8551) [2023-12-15 18:06:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46697 states to 46697 states and 71314 transitions. [2023-12-15 18:06:59,200 INFO L78 Accepts]: Start accepts. Automaton has 46697 states and 71314 transitions. Word has length 131 [2023-12-15 18:06:59,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:59,200 INFO L495 AbstractCegarLoop]: Abstraction has 46697 states and 71314 transitions. [2023-12-15 18:06:59,201 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) [2023-12-15 18:06:59,201 INFO L276 IsEmpty]: Start isEmpty. Operand 46697 states and 71314 transitions. [2023-12-15 18:06:59,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-15 18:06:59,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:59,256 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] [2023-12-15 18:06:59,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 18:06:59,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:06:59,460 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:59,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:59,462 INFO L85 PathProgramCache]: Analyzing trace with hash 35117497, now seen corresponding path program 1 times [2023-12-15 18:06:59,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:59,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869710572] [2023-12-15 18:06:59,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:59,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-15 18:06:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-15 18:06:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-15 18:06:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 18:06:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-15 18:06:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-15 18:06:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-15 18:06:59,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:59,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869710572] [2023-12-15 18:06:59,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869710572] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:59,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:59,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:06:59,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337876403] [2023-12-15 18:06:59,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:59,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:59,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:59,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:59,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:06:59,547 INFO L87 Difference]: Start difference. First operand 46697 states and 71314 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) [2023-12-15 18:07:01,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:01,864 INFO L93 Difference]: Finished difference Result 46762 states and 71382 transitions. [2023-12-15 18:07:01,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:01,865 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 [2023-12-15 18:07:01,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:01,987 INFO L225 Difference]: With dead ends: 46762 [2023-12-15 18:07:01,988 INFO L226 Difference]: Without dead ends: 46360 [2023-12-15 18:07:02,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:07:02,006 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 369 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:02,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 651 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 18:07:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46360 states. [2023-12-15 18:07:04,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46360 to 46298. [2023-12-15 18:07:04,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46298 states, 39420 states have (on average 1.4811516996448504) internal successors, (58387), 39919 states have internal predecessors, (58387), 3967 states have call successors, (3967), 2468 states have call predecessors, (3967), 2909 states have return successors, (8487), 3974 states have call predecessors, (8487), 3966 states have call successors, (8487) [2023-12-15 18:07:04,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46298 states to 46298 states and 70841 transitions. [2023-12-15 18:07:04,293 INFO L78 Accepts]: Start accepts. Automaton has 46298 states and 70841 transitions. Word has length 133 [2023-12-15 18:07:04,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:04,293 INFO L495 AbstractCegarLoop]: Abstraction has 46298 states and 70841 transitions. [2023-12-15 18:07:04,294 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) [2023-12-15 18:07:04,294 INFO L276 IsEmpty]: Start isEmpty. Operand 46298 states and 70841 transitions. [2023-12-15 18:07:04,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-15 18:07:04,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:04,365 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:04,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 18:07:04,365 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:04,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2104333097, now seen corresponding path program 1 times [2023-12-15 18:07:04,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:04,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076763831] [2023-12-15 18:07:04,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:04,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 18:07:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 18:07:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-15 18:07:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 18:07:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 18:07:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-15 18:07:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 18:07:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-15 18:07:04,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:04,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076763831] [2023-12-15 18:07:04,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076763831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:04,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:04,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:04,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040394954] [2023-12-15 18:07:04,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:04,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:04,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:04,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:04,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:04,442 INFO L87 Difference]: Start difference. First operand 46298 states and 70841 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-15 18:07:06,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:06,905 INFO L93 Difference]: Finished difference Result 47645 states and 72510 transitions. [2023-12-15 18:07:06,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:07:06,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 145 [2023-12-15 18:07:06,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:07,009 INFO L225 Difference]: With dead ends: 47645 [2023-12-15 18:07:07,009 INFO L226 Difference]: Without dead ends: 46405 [2023-12-15 18:07:07,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:07:07,027 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 300 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:07,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 943 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:07:07,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46405 states. [2023-12-15 18:07:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46405 to 46223. [2023-12-15 18:07:09,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46223 states, 39367 states have (on average 1.481393044936114) internal successors, (58318), 39867 states have internal predecessors, (58318), 3958 states have call successors, (3958), 2463 states have call predecessors, (3958), 2896 states have return successors, (8471), 3956 states have call predecessors, (8471), 3957 states have call successors, (8471) [2023-12-15 18:07:09,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46223 states to 46223 states and 70747 transitions. [2023-12-15 18:07:09,390 INFO L78 Accepts]: Start accepts. Automaton has 46223 states and 70747 transitions. Word has length 145 [2023-12-15 18:07:09,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:09,392 INFO L495 AbstractCegarLoop]: Abstraction has 46223 states and 70747 transitions. [2023-12-15 18:07:09,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-15 18:07:09,393 INFO L276 IsEmpty]: Start isEmpty. Operand 46223 states and 70747 transitions. [2023-12-15 18:07:09,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-15 18:07:09,456 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:09,456 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] [2023-12-15 18:07:09,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 18:07:09,456 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:09,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:09,456 INFO L85 PathProgramCache]: Analyzing trace with hash 352784505, now seen corresponding path program 1 times [2023-12-15 18:07:09,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:09,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980854469] [2023-12-15 18:07:09,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:09,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 18:07:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 18:07:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 18:07:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 18:07:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-15 18:07:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:07:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-15 18:07:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-15 18:07:09,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:09,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980854469] [2023-12-15 18:07:09,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980854469] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:07:09,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519728695] [2023-12-15 18:07:09,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:09,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:07:09,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:07:09,751 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) [2023-12-15 18:07:09,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 18:07:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 18:07:09,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:07:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-15 18:07:09,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:07:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-15 18:07:10,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519728695] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:07:10,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:07:10,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-12-15 18:07:10,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657314261] [2023-12-15 18:07:10,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:07:10,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 18:07:10,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:10,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 18:07:10,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-15 18:07:10,162 INFO L87 Difference]: Start difference. First operand 46223 states and 70747 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) Received shutdown request... [2023-12-15 18:07:11,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:07:11,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2023-12-15 18:07:11,658 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 661 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:11,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 586 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:07:11,659 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:07:11,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 18:07:11,690 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:07:11,690 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 18:07:11,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-15 18:07:11,864 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (46223states) and FLOYD_HOARE automaton (currently 16 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17354 states constructed, input type IntersectNwa). [2023-12-15 18:07:11,866 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:07:11,868 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-15 18:07:11,869 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:07:11,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:07:11 BoogieIcfgContainer [2023-12-15 18:07:11,871 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:07:11,871 INFO L158 Benchmark]: Toolchain (without parser) took 58708.22ms. Allocated memory was 154.1MB in the beginning and 4.9GB in the end (delta: 4.7GB). Free memory was 101.6MB in the beginning and 3.6GB in the end (delta: -3.5GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-15 18:07:11,871 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 154.1MB. Free memory was 107.7MB in the beginning and 107.6MB in the end (delta: 134.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:07:11,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.81ms. Allocated memory is still 154.1MB. Free memory was 101.3MB in the beginning and 82.3MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-15 18:07:11,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.51ms. Allocated memory is still 154.1MB. Free memory was 82.3MB in the beginning and 79.3MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 18:07:11,872 INFO L158 Benchmark]: Boogie Preprocessor took 83.13ms. Allocated memory is still 154.1MB. Free memory was 79.3MB in the beginning and 75.6MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 18:07:11,872 INFO L158 Benchmark]: RCFGBuilder took 602.26ms. Allocated memory was 154.1MB in the beginning and 213.9MB in the end (delta: 59.8MB). Free memory was 75.6MB in the beginning and 149.2MB in the end (delta: -73.6MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. [2023-12-15 18:07:11,872 INFO L158 Benchmark]: TraceAbstraction took 57692.43ms. Allocated memory was 213.9MB in the beginning and 4.9GB in the end (delta: 4.7GB). Free memory was 148.7MB in the beginning and 3.6GB in the end (delta: -3.5GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-15 18:07:11,872 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 154.1MB. Free memory was 107.7MB in the beginning and 107.6MB in the end (delta: 134.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 267.81ms. Allocated memory is still 154.1MB. Free memory was 101.3MB in the beginning and 82.3MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.51ms. Allocated memory is still 154.1MB. Free memory was 82.3MB in the beginning and 79.3MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 83.13ms. Allocated memory is still 154.1MB. Free memory was 79.3MB in the beginning and 75.6MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 602.26ms. Allocated memory was 154.1MB in the beginning and 213.9MB in the end (delta: 59.8MB). Free memory was 75.6MB in the beginning and 149.2MB in the end (delta: -73.6MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. * TraceAbstraction took 57692.43ms. Allocated memory was 213.9MB in the beginning and 4.9GB in the end (delta: 4.7GB). Free memory was 148.7MB in the beginning and 3.6GB in the end (delta: -3.5GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 28). Cancelled while NwaCegarLoop was constructing difference of abstraction (46223states) and FLOYD_HOARE automaton (currently 16 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17354 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 496]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 496). Cancelled while NwaCegarLoop was constructing difference of abstraction (46223states) and FLOYD_HOARE automaton (currently 16 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (17354 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 232 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 57.7s, OverallIterations: 28, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.4s, AutomataDifference: 34.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19712 SdHoareTripleChecker+Valid, 14.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19235 mSDsluCounter, 23632 SdHoareTripleChecker+Invalid, 12.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17404 mSDsCounter, 3443 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24265 IncrementalHoareTripleChecker+Invalid, 27708 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3443 mSolverCounterUnsat, 6228 mSDtfsCounter, 24265 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1732 GetRequests, 1352 SyntacticMatches, 1 SemanticMatches, 379 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48766occurred in iteration=24, InterpolantAutomatonStates: 338, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.2s AutomataMinimizationTime, 27 MinimizatonAttempts, 10722 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 2831 NumberOfCodeBlocks, 2831 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 3011 ConstructedInterpolants, 0 QuantifiedInterpolants, 6720 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2268 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 35 InterpolantComputations, 26 PerfectInterpolantSequences, 649/710 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown