/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.10.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:07:11,655 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:07:11,723 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 18:07:11,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:07:11,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:07:11,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:07:11,762 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:07:11,762 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:07:11,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:07:11,766 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:07:11,767 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:07:11,767 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:07:11,768 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:07:11,769 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:07:11,769 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:07:11,769 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:07:11,770 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:07:11,770 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:07:11,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:07:11,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:07:11,771 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:07:11,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:07:11,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:07:11,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:07:11,772 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:07:11,772 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:07:11,773 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:07:11,773 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:07:11,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:07:11,774 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:07:11,774 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:07:11,775 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:07:11,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:07:11,775 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:07:11,775 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:07:11,775 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:07:11,775 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:07:11,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:07:11,776 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:07:11,776 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:07:11,776 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:07:11,776 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:07:11,776 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:07:11,776 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:07:12,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:07:12,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:07:12,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:07:12,052 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:07:12,052 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:07:12,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2023-12-15 18:07:13,226 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:07:13,476 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:07:13,477 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2023-12-15 18:07:13,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81310d56a/ddc88530942942c7b7f121710e5158d6/FLAG7dd5b457b [2023-12-15 18:07:13,512 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81310d56a/ddc88530942942c7b7f121710e5158d6 [2023-12-15 18:07:13,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:07:13,516 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:07:13,517 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:07:13,517 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:07:13,521 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:07:13,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:07:13" (1/1) ... [2023-12-15 18:07:13,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@372a1c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13, skipping insertion in model container [2023-12-15 18:07:13,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:07:13" (1/1) ... [2023-12-15 18:07:13,587 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:07:13,717 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.10.cil-2.c[914,927] [2023-12-15 18:07:13,759 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.10.cil-2.c[7115,7128] [2023-12-15 18:07:13,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:07:13,879 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:07:13,892 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.10.cil-2.c[914,927] [2023-12-15 18:07:13,911 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.10.cil-2.c[7115,7128] [2023-12-15 18:07:13,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:07:13,998 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:07:13,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13 WrapperNode [2023-12-15 18:07:13,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:07:14,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:07:14,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:07:14,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:07:14,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13" (1/1) ... [2023-12-15 18:07:14,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13" (1/1) ... [2023-12-15 18:07:14,067 INFO L138 Inliner]: procedures = 73, calls = 87, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 948 [2023-12-15 18:07:14,068 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:07:14,068 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:07:14,069 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:07:14,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:07:14,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13" (1/1) ... [2023-12-15 18:07:14,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13" (1/1) ... [2023-12-15 18:07:14,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13" (1/1) ... [2023-12-15 18:07:14,107 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 18:07:14,107 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13" (1/1) ... [2023-12-15 18:07:14,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13" (1/1) ... [2023-12-15 18:07:14,121 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13" (1/1) ... [2023-12-15 18:07:14,150 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13" (1/1) ... [2023-12-15 18:07:14,153 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13" (1/1) ... [2023-12-15 18:07:14,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13" (1/1) ... [2023-12-15 18:07:14,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:07:14,178 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:07:14,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:07:14,178 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:07:14,179 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13" (1/1) ... [2023-12-15 18:07:14,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:07:14,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:07:14,221 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 18:07:14,242 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 18:07:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:07:14,253 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 18:07:14,253 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 18:07:14,254 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-15 18:07:14,254 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-15 18:07:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-15 18:07:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-15 18:07:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-15 18:07:14,255 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-15 18:07:14,255 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-15 18:07:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-15 18:07:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-15 18:07:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-15 18:07:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-15 18:07:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-15 18:07:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-15 18:07:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-15 18:07:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-15 18:07:14,256 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-15 18:07:14,256 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-15 18:07:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-15 18:07:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-15 18:07:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-15 18:07:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:07:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-15 18:07:14,258 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-15 18:07:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-15 18:07:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-15 18:07:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:07:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:07:14,259 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-15 18:07:14,259 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-15 18:07:14,399 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:07:14,401 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:07:15,242 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:07:15,311 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:07:15,311 INFO L309 CfgBuilder]: Removed 17 assume(true) statements. [2023-12-15 18:07:15,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:07:15 BoogieIcfgContainer [2023-12-15 18:07:15,312 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:07:15,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:07:15,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:07:15,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:07:15,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:07:13" (1/3) ... [2023-12-15 18:07:15,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dea82e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:07:15, skipping insertion in model container [2023-12-15 18:07:15,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:07:13" (2/3) ... [2023-12-15 18:07:15,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dea82e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:07:15, skipping insertion in model container [2023-12-15 18:07:15,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:07:15" (3/3) ... [2023-12-15 18:07:15,319 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2023-12-15 18:07:15,334 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:07:15,335 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:07:15,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:07:15,402 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;@5287a896, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:07:15,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:07:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 393 states, 338 states have (on average 1.7071005917159763) internal successors, (577), 344 states have internal predecessors, (577), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-15 18:07:15,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:07:15,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:15,420 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 18:07:15,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:15,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:15,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1051938744, now seen corresponding path program 1 times [2023-12-15 18:07:15,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:15,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276909999] [2023-12-15 18:07:15,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:15,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:15,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:15,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276909999] [2023-12-15 18:07:15,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276909999] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:15,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:15,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:07:15,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747409718] [2023-12-15 18:07:15,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:15,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:07:15,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:15,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:07:16,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:07:16,003 INFO L87 Difference]: Start difference. First operand has 393 states, 338 states have (on average 1.7071005917159763) internal successors, (577), 344 states have internal predecessors, (577), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) 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 18:07:17,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:17,293 INFO L93 Difference]: Finished difference Result 888 states and 1461 transitions. [2023-12-15 18:07:17,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:07:17,295 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 18:07:17,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:17,319 INFO L225 Difference]: With dead ends: 888 [2023-12-15 18:07:17,319 INFO L226 Difference]: Without dead ends: 513 [2023-12-15 18:07:17,328 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 18:07:17,332 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1025 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:17,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 1568 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:07:17,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-12-15 18:07:17,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 476. [2023-12-15 18:07:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 403 states have (on average 1.5707196029776676) internal successors, (633), 409 states have internal predecessors, (633), 49 states have call successors, (49), 21 states have call predecessors, (49), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-15 18:07:17,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 734 transitions. [2023-12-15 18:07:17,439 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 734 transitions. Word has length 58 [2023-12-15 18:07:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:17,440 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 734 transitions. [2023-12-15 18:07:17,440 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 18:07:17,441 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 734 transitions. [2023-12-15 18:07:17,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:07:17,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:17,450 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 18:07:17,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:07:17,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:17,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:17,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2143100791, now seen corresponding path program 1 times [2023-12-15 18:07:17,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:17,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386399587] [2023-12-15 18:07:17,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:17,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:17,609 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 18:07:17,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:17,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386399587] [2023-12-15 18:07:17,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386399587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:17,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:17,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:07:17,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153363589] [2023-12-15 18:07:17,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:17,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:07:17,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:17,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:07:17,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:07:17,613 INFO L87 Difference]: Start difference. First operand 476 states and 734 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 18:07:18,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:18,739 INFO L93 Difference]: Finished difference Result 796 states and 1184 transitions. [2023-12-15 18:07:18,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:07:18,742 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 18:07:18,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:18,751 INFO L225 Difference]: With dead ends: 796 [2023-12-15 18:07:18,752 INFO L226 Difference]: Without dead ends: 634 [2023-12-15 18:07:18,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-15 18:07:18,754 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 1511 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1562 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:18,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 1511 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1562 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:07:18,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-12-15 18:07:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 564. [2023-12-15 18:07:18,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 471 states have (on average 1.5477707006369428) internal successors, (729), 479 states have internal predecessors, (729), 60 states have call successors, (60), 28 states have call predecessors, (60), 31 states have return successors, (71), 60 states have call predecessors, (71), 58 states have call successors, (71) [2023-12-15 18:07:18,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 860 transitions. [2023-12-15 18:07:18,812 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 860 transitions. Word has length 58 [2023-12-15 18:07:18,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:18,813 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 860 transitions. [2023-12-15 18:07:18,813 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 18:07:18,813 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 860 transitions. [2023-12-15 18:07:18,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:07:18,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:18,816 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 18:07:18,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:07:18,816 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:18,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:18,817 INFO L85 PathProgramCache]: Analyzing trace with hash -214828089, now seen corresponding path program 1 times [2023-12-15 18:07:18,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:18,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507252855] [2023-12-15 18:07:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:18,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,990 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 18:07:18,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:18,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507252855] [2023-12-15 18:07:18,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507252855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:18,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:18,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:07:18,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307606918] [2023-12-15 18:07:18,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:18,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:07:18,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:18,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:07:18,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:07:18,997 INFO L87 Difference]: Start difference. First operand 564 states and 860 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 18:07:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:20,127 INFO L93 Difference]: Finished difference Result 840 states and 1249 transitions. [2023-12-15 18:07:20,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:07:20,128 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 18:07:20,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:20,132 INFO L225 Difference]: With dead ends: 840 [2023-12-15 18:07:20,132 INFO L226 Difference]: Without dead ends: 596 [2023-12-15 18:07:20,134 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 18:07:20,136 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 541 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:20,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 2143 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:07:20,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-12-15 18:07:20,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 568. [2023-12-15 18:07:20,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 474 states have (on average 1.540084388185654) internal successors, (730), 482 states have internal predecessors, (730), 60 states have call successors, (60), 28 states have call predecessors, (60), 32 states have return successors, (72), 61 states have call predecessors, (72), 58 states have call successors, (72) [2023-12-15 18:07:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 862 transitions. [2023-12-15 18:07:20,170 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 862 transitions. Word has length 58 [2023-12-15 18:07:20,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:20,171 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 862 transitions. [2023-12-15 18:07:20,171 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 18:07:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 862 transitions. [2023-12-15 18:07:20,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:07:20,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:20,172 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 18:07:20,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:07:20,172 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:20,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:20,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1836155909, now seen corresponding path program 1 times [2023-12-15 18:07:20,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:20,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763755634] [2023-12-15 18:07:20,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:20,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:20,301 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 18:07:20,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:20,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763755634] [2023-12-15 18:07:20,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763755634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:20,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:20,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:07:20,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563469235] [2023-12-15 18:07:20,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:20,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:07:20,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:20,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:07:20,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:07:20,303 INFO L87 Difference]: Start difference. First operand 568 states and 862 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 18:07:21,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:21,395 INFO L93 Difference]: Finished difference Result 858 states and 1267 transitions. [2023-12-15 18:07:21,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:07:21,395 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 18:07:21,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:21,397 INFO L225 Difference]: With dead ends: 858 [2023-12-15 18:07:21,398 INFO L226 Difference]: Without dead ends: 610 [2023-12-15 18:07:21,398 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 18:07:21,399 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 807 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:21,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1900 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1830 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:07:21,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2023-12-15 18:07:21,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 580. [2023-12-15 18:07:21,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 483 states have (on average 1.5300207039337475) internal successors, (739), 491 states have internal predecessors, (739), 60 states have call successors, (60), 28 states have call predecessors, (60), 35 states have return successors, (75), 64 states have call predecessors, (75), 58 states have call successors, (75) [2023-12-15 18:07:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 874 transitions. [2023-12-15 18:07:21,424 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 874 transitions. Word has length 58 [2023-12-15 18:07:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:21,424 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 874 transitions. [2023-12-15 18:07:21,424 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 18:07:21,424 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 874 transitions. [2023-12-15 18:07:21,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:07:21,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:21,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:21,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:07:21,426 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:21,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:21,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1898195523, now seen corresponding path program 1 times [2023-12-15 18:07:21,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:21,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296958894] [2023-12-15 18:07:21,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:21,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:21,587 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 18:07:21,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:21,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296958894] [2023-12-15 18:07:21,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296958894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:21,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:21,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:07:21,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327036385] [2023-12-15 18:07:21,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:21,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:07:21,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:21,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:07:21,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:07:21,591 INFO L87 Difference]: Start difference. First operand 580 states and 874 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 18:07:22,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:22,692 INFO L93 Difference]: Finished difference Result 936 states and 1349 transitions. [2023-12-15 18:07:22,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:07:22,696 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 18:07:22,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:22,700 INFO L225 Difference]: With dead ends: 936 [2023-12-15 18:07:22,700 INFO L226 Difference]: Without dead ends: 678 [2023-12-15 18:07:22,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-12-15 18:07:22,702 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 1481 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:22,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1343 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:07:22,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2023-12-15 18:07:22,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 590. [2023-12-15 18:07:22,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 491 states have (on average 1.5213849287169043) internal successors, (747), 499 states have internal predecessors, (747), 61 states have call successors, (61), 29 states have call predecessors, (61), 36 states have return successors, (74), 65 states have call predecessors, (74), 59 states have call successors, (74) [2023-12-15 18:07:22,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 882 transitions. [2023-12-15 18:07:22,748 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 882 transitions. Word has length 58 [2023-12-15 18:07:22,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:22,748 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 882 transitions. [2023-12-15 18:07:22,748 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 18:07:22,749 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 882 transitions. [2023-12-15 18:07:22,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:07:22,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:22,750 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 18:07:22,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:07:22,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:22,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:22,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1974069947, now seen corresponding path program 1 times [2023-12-15 18:07:22,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:22,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499330720] [2023-12-15 18:07:22,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:22,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,851 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 18:07:22,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:22,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499330720] [2023-12-15 18:07:22,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499330720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:22,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:22,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:22,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694074278] [2023-12-15 18:07:22,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:22,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:22,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:22,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:22,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:22,853 INFO L87 Difference]: Start difference. First operand 590 states and 882 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 18:07:23,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:23,676 INFO L93 Difference]: Finished difference Result 1172 states and 1669 transitions. [2023-12-15 18:07:23,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:07:23,676 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 18:07:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:23,681 INFO L225 Difference]: With dead ends: 1172 [2023-12-15 18:07:23,682 INFO L226 Difference]: Without dead ends: 905 [2023-12-15 18:07:23,683 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 18:07:23,686 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 1173 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:23,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 1296 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:07:23,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-12-15 18:07:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 851. [2023-12-15 18:07:23,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 686 states have (on average 1.4650145772594751) internal successors, (1005), 701 states have internal predecessors, (1005), 96 states have call successors, (96), 51 states have call predecessors, (96), 67 states have return successors, (131), 105 states have call predecessors, (131), 94 states have call successors, (131) [2023-12-15 18:07:23,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1232 transitions. [2023-12-15 18:07:23,728 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1232 transitions. Word has length 58 [2023-12-15 18:07:23,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:23,730 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1232 transitions. [2023-12-15 18:07:23,730 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 18:07:23,730 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1232 transitions. [2023-12-15 18:07:23,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:07:23,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:23,733 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 18:07:23,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:07:23,733 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:23,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:23,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1929630287, now seen corresponding path program 1 times [2023-12-15 18:07:23,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:23,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695349372] [2023-12-15 18:07:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:23,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,828 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 18:07:23,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:23,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695349372] [2023-12-15 18:07:23,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695349372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:23,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:23,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:07:23,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579100881] [2023-12-15 18:07:23,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:23,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:23,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:23,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:23,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:07:23,830 INFO L87 Difference]: Start difference. First operand 851 states and 1232 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 18:07:24,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:24,488 INFO L93 Difference]: Finished difference Result 1935 states and 2678 transitions. [2023-12-15 18:07:24,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:07:24,489 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 18:07:24,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:24,495 INFO L225 Difference]: With dead ends: 1935 [2023-12-15 18:07:24,495 INFO L226 Difference]: Without dead ends: 1416 [2023-12-15 18:07:24,500 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 18:07:24,501 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1474 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:24,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 848 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:07:24,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2023-12-15 18:07:24,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1262. [2023-12-15 18:07:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 997 states have (on average 1.4092276830491475) internal successors, (1405), 1019 states have internal predecessors, (1405), 145 states have call successors, (145), 93 states have call predecessors, (145), 118 states have return successors, (201), 156 states have call predecessors, (201), 143 states have call successors, (201) [2023-12-15 18:07:24,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1751 transitions. [2023-12-15 18:07:24,559 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1751 transitions. Word has length 59 [2023-12-15 18:07:24,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:24,560 INFO L495 AbstractCegarLoop]: Abstraction has 1262 states and 1751 transitions. [2023-12-15 18:07:24,560 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 18:07:24,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1751 transitions. [2023-12-15 18:07:24,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:07:24,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:24,562 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 18:07:24,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:07:24,562 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:24,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:24,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1176185545, now seen corresponding path program 1 times [2023-12-15 18:07:24,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:24,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86006099] [2023-12-15 18:07:24,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:24,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:24,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:24,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:24,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:24,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:24,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:24,645 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 18:07:24,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:24,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86006099] [2023-12-15 18:07:24,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86006099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:24,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:24,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:07:24,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130950172] [2023-12-15 18:07:24,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:24,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:24,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:24,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:24,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:07:24,647 INFO L87 Difference]: Start difference. First operand 1262 states and 1751 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 18:07:25,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:25,475 INFO L93 Difference]: Finished difference Result 3222 states and 4314 transitions. [2023-12-15 18:07:25,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:07:25,476 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 18:07:25,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:25,486 INFO L225 Difference]: With dead ends: 3222 [2023-12-15 18:07:25,486 INFO L226 Difference]: Without dead ends: 2262 [2023-12-15 18:07:25,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:07:25,490 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1018 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:25,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1040 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:07:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2023-12-15 18:07:25,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2078. [2023-12-15 18:07:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 1615 states have (on average 1.3603715170278639) internal successors, (2197), 1643 states have internal predecessors, (2197), 239 states have call successors, (239), 179 states have call predecessors, (239), 222 states have return successors, (339), 262 states have call predecessors, (339), 237 states have call successors, (339) [2023-12-15 18:07:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2775 transitions. [2023-12-15 18:07:25,592 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2775 transitions. Word has length 60 [2023-12-15 18:07:25,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:25,592 INFO L495 AbstractCegarLoop]: Abstraction has 2078 states and 2775 transitions. [2023-12-15 18:07:25,593 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 18:07:25,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2775 transitions. [2023-12-15 18:07:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 18:07:25,595 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:25,595 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 18:07:25,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:07:25,596 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:25,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:25,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1632430454, now seen corresponding path program 1 times [2023-12-15 18:07:25,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:25,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149110673] [2023-12-15 18:07:25,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:25,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:25,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:25,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:25,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:25,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:25,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:25,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:25,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:25,663 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 18:07:25,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:25,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149110673] [2023-12-15 18:07:25,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149110673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:25,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:25,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:07:25,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93712511] [2023-12-15 18:07:25,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:25,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:25,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:25,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:25,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:07:25,665 INFO L87 Difference]: Start difference. First operand 2078 states and 2775 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 18:07:26,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:26,429 INFO L93 Difference]: Finished difference Result 4742 states and 6179 transitions. [2023-12-15 18:07:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:07:26,429 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 18:07:26,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:26,442 INFO L225 Difference]: With dead ends: 4742 [2023-12-15 18:07:26,442 INFO L226 Difference]: Without dead ends: 2986 [2023-12-15 18:07:26,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:07:26,448 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 1458 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:26,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 857 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:07:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2023-12-15 18:07:26,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2744. [2023-12-15 18:07:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 2117 states have (on average 1.339159187529523) internal successors, (2835), 2153 states have internal predecessors, (2835), 319 states have call successors, (319), 249 states have call predecessors, (319), 306 states have return successors, (448), 348 states have call predecessors, (448), 317 states have call successors, (448) [2023-12-15 18:07:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 3602 transitions. [2023-12-15 18:07:26,593 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 3602 transitions. Word has length 66 [2023-12-15 18:07:26,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:26,594 INFO L495 AbstractCegarLoop]: Abstraction has 2744 states and 3602 transitions. [2023-12-15 18:07:26,594 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 18:07:26,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 3602 transitions. [2023-12-15 18:07:26,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-15 18:07:26,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:26,597 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 18:07:26,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:07:26,598 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:26,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:26,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1451057087, now seen corresponding path program 1 times [2023-12-15 18:07:26,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:26,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407920116] [2023-12-15 18:07:26,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:26,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:26,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,672 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 18:07:26,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:26,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407920116] [2023-12-15 18:07:26,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407920116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:26,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:26,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:26,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884432557] [2023-12-15 18:07:26,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:26,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:26,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:26,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:26,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:26,674 INFO L87 Difference]: Start difference. First operand 2744 states and 3602 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 18:07:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:27,504 INFO L93 Difference]: Finished difference Result 3464 states and 4479 transitions. [2023-12-15 18:07:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:07:27,505 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 18:07:27,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:27,528 INFO L225 Difference]: With dead ends: 3464 [2023-12-15 18:07:27,528 INFO L226 Difference]: Without dead ends: 3461 [2023-12-15 18:07:27,530 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 18:07:27,530 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 2049 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:27,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 833 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:07:27,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2023-12-15 18:07:27,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3194. [2023-12-15 18:07:27,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 2458 states have (on average 1.3275020341741253) internal successors, (3263), 2499 states have internal predecessors, (3263), 369 states have call successors, (369), 293 states have call predecessors, (369), 365 states have return successors, (527), 408 states have call predecessors, (527), 368 states have call successors, (527) [2023-12-15 18:07:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 4159 transitions. [2023-12-15 18:07:27,739 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 4159 transitions. Word has length 67 [2023-12-15 18:07:27,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:27,740 INFO L495 AbstractCegarLoop]: Abstraction has 3194 states and 4159 transitions. [2023-12-15 18:07:27,740 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 18:07:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 4159 transitions. [2023-12-15 18:07:27,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-15 18:07:27,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:27,742 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 18:07:27,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:07:27,742 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:27,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:27,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2034394336, now seen corresponding path program 1 times [2023-12-15 18:07:27,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:27,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520505440] [2023-12-15 18:07:27,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:27,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:27,894 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 18:07:27,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:27,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520505440] [2023-12-15 18:07:27,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520505440] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:07:27,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836837878] [2023-12-15 18:07:27,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:27,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:07:27,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:07:27,897 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 18:07:27,907 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 18:07:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:28,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 18:07:28,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:07:28,273 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 18:07:28,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:07:28,336 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 18:07:28,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836837878] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:07:28,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:07:28,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-12-15 18:07:28,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693505524] [2023-12-15 18:07:28,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:07:28,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:07:28,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:28,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:07:28,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:07:28,338 INFO L87 Difference]: Start difference. First operand 3194 states and 4159 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 18:07:30,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:30,152 INFO L93 Difference]: Finished difference Result 7261 states and 9271 transitions. [2023-12-15 18:07:30,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 18:07:30,152 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 18:07:30,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:30,185 INFO L225 Difference]: With dead ends: 7261 [2023-12-15 18:07:30,186 INFO L226 Difference]: Without dead ends: 7258 [2023-12-15 18:07:30,190 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 18:07:30,190 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1915 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1985 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:30,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1985 Valid, 1917 Invalid, 2494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 18:07:30,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7258 states. [2023-12-15 18:07:30,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7258 to 4820. [2023-12-15 18:07:30,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4820 states, 3698 states have (on average 1.3182801514332072) internal successors, (4875), 3761 states have internal predecessors, (4875), 553 states have call successors, (553), 451 states have call predecessors, (553), 567 states have return successors, (805), 614 states have call predecessors, (805), 552 states have call successors, (805) [2023-12-15 18:07:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 6233 transitions. [2023-12-15 18:07:30,521 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 6233 transitions. Word has length 68 [2023-12-15 18:07:30,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:30,521 INFO L495 AbstractCegarLoop]: Abstraction has 4820 states and 6233 transitions. [2023-12-15 18:07:30,521 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 18:07:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 6233 transitions. [2023-12-15 18:07:30,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 18:07:30,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:30,553 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 18:07:30,563 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 18:07:30,754 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 18:07:30,754 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:30,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:30,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1844962687, now seen corresponding path program 2 times [2023-12-15 18:07:30,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:30,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850312334] [2023-12-15 18:07:30,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:30,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:30,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:30,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:30,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:30,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:30,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:30,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:30,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:30,818 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 18:07:30,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:30,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850312334] [2023-12-15 18:07:30,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850312334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:30,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:30,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:07:30,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950614638] [2023-12-15 18:07:30,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:30,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:30,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:30,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:30,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:07:30,819 INFO L87 Difference]: Start difference. First operand 4820 states and 6233 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 18:07:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:31,664 INFO L93 Difference]: Finished difference Result 7276 states and 9380 transitions. [2023-12-15 18:07:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:07:31,665 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 18:07:31,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:31,680 INFO L225 Difference]: With dead ends: 7276 [2023-12-15 18:07:31,681 INFO L226 Difference]: Without dead ends: 3573 [2023-12-15 18:07:31,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:07:31,690 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1090 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:31,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 1174 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:07:31,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2023-12-15 18:07:31,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 3344. [2023-12-15 18:07:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 2578 states have (on average 1.3060512024825446) internal successors, (3367), 2619 states have internal predecessors, (3367), 385 states have call successors, (385), 307 states have call predecessors, (385), 379 states have return successors, (531), 424 states have call predecessors, (531), 384 states have call successors, (531) [2023-12-15 18:07:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 4283 transitions. [2023-12-15 18:07:31,973 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 4283 transitions. Word has length 71 [2023-12-15 18:07:31,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:31,974 INFO L495 AbstractCegarLoop]: Abstraction has 3344 states and 4283 transitions. [2023-12-15 18:07:31,974 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 18:07:31,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 4283 transitions. [2023-12-15 18:07:31,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-15 18:07:31,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:31,977 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 18:07:31,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:07:31,977 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:31,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:31,978 INFO L85 PathProgramCache]: Analyzing trace with hash 568509296, now seen corresponding path program 1 times [2023-12-15 18:07:31,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:31,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020347081] [2023-12-15 18:07:31,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:31,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:07:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:32,076 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 18:07:32,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:32,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020347081] [2023-12-15 18:07:32,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020347081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:32,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:32,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:07:32,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984399072] [2023-12-15 18:07:32,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:32,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:07:32,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:32,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:07:32,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:07:32,078 INFO L87 Difference]: Start difference. First operand 3344 states and 4283 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 18:07:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:33,437 INFO L93 Difference]: Finished difference Result 9642 states and 12126 transitions. [2023-12-15 18:07:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 18:07:33,438 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 18:07:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:33,458 INFO L225 Difference]: With dead ends: 9642 [2023-12-15 18:07:33,459 INFO L226 Difference]: Without dead ends: 5405 [2023-12-15 18:07:33,467 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 18:07:33,467 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1240 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:33,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 1662 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:07:33,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2023-12-15 18:07:33,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 5085. [2023-12-15 18:07:33,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5085 states, 3862 states have (on average 1.2729155877783531) internal successors, (4916), 3946 states have internal predecessors, (4916), 589 states have call successors, (589), 481 states have call predecessors, (589), 632 states have return successors, (913), 664 states have call predecessors, (913), 588 states have call successors, (913) [2023-12-15 18:07:33,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5085 states to 5085 states and 6418 transitions. [2023-12-15 18:07:33,839 INFO L78 Accepts]: Start accepts. Automaton has 5085 states and 6418 transitions. Word has length 76 [2023-12-15 18:07:33,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:33,839 INFO L495 AbstractCegarLoop]: Abstraction has 5085 states and 6418 transitions. [2023-12-15 18:07:33,839 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 18:07:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5085 states and 6418 transitions. [2023-12-15 18:07:33,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 18:07:33,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:33,844 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 18:07:33,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:07:33,845 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:33,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1786321226, now seen corresponding path program 1 times [2023-12-15 18:07:33,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:33,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899687944] [2023-12-15 18:07:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:33,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 18:07:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:33,966 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 18:07:33,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:33,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899687944] [2023-12-15 18:07:33,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899687944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:33,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:33,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:07:33,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916555940] [2023-12-15 18:07:33,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:33,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:07:33,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:33,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:07:33,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:07:33,969 INFO L87 Difference]: Start difference. First operand 5085 states and 6418 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 18:07:35,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:35,401 INFO L93 Difference]: Finished difference Result 8756 states and 10926 transitions. [2023-12-15 18:07:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 18:07:35,402 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 18:07:35,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:35,424 INFO L225 Difference]: With dead ends: 8756 [2023-12-15 18:07:35,424 INFO L226 Difference]: Without dead ends: 4576 [2023-12-15 18:07:35,432 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 18:07:35,432 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1728 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:35,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 1669 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1644 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:07:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2023-12-15 18:07:35,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4242. [2023-12-15 18:07:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4242 states, 3232 states have (on average 1.2673267326732673) internal successors, (4096), 3298 states have internal predecessors, (4096), 490 states have call successors, (490), 396 states have call predecessors, (490), 518 states have return successors, (691), 554 states have call predecessors, (691), 489 states have call successors, (691) [2023-12-15 18:07:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4242 states to 4242 states and 5277 transitions. [2023-12-15 18:07:35,728 INFO L78 Accepts]: Start accepts. Automaton has 4242 states and 5277 transitions. Word has length 86 [2023-12-15 18:07:35,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:35,729 INFO L495 AbstractCegarLoop]: Abstraction has 4242 states and 5277 transitions. [2023-12-15 18:07:35,729 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 18:07:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4242 states and 5277 transitions. [2023-12-15 18:07:35,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 18:07:35,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:35,736 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 18:07:35,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:07:35,737 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:35,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:35,737 INFO L85 PathProgramCache]: Analyzing trace with hash -814915802, now seen corresponding path program 1 times [2023-12-15 18:07:35,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:35,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796332745] [2023-12-15 18:07:35,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:35,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:07:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 18:07:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-15 18:07:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-15 18:07:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-15 18:07:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 18:07:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-15 18:07:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:35,882 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 18:07:35,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:35,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796332745] [2023-12-15 18:07:35,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796332745] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:07:35,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650510802] [2023-12-15 18:07:35,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:35,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:07:35,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:07:35,885 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 18:07:35,912 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 18:07:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 18:07:36,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:07:36,067 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 18:07:36,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:07:36,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650510802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:36,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:07:36,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-12-15 18:07:36,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662420518] [2023-12-15 18:07:36,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:36,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:36,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:36,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:36,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-15 18:07:36,071 INFO L87 Difference]: Start difference. First operand 4242 states and 5277 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 18:07:36,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:36,320 INFO L93 Difference]: Finished difference Result 6214 states and 7706 transitions. [2023-12-15 18:07:36,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:36,321 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 18:07:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:36,326 INFO L225 Difference]: With dead ends: 6214 [2023-12-15 18:07:36,326 INFO L226 Difference]: Without dead ends: 2298 [2023-12-15 18:07:36,332 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 18:07:36,332 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 32 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:36,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2774 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:07:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2023-12-15 18:07:36,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2173. [2023-12-15 18:07:36,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 1740 states have (on average 1.285632183908046) internal successors, (2237), 1755 states have internal predecessors, (2237), 214 states have call successors, (214), 162 states have call predecessors, (214), 217 states have return successors, (298), 256 states have call predecessors, (298), 213 states have call successors, (298) [2023-12-15 18:07:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 2749 transitions. [2023-12-15 18:07:36,455 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 2749 transitions. Word has length 131 [2023-12-15 18:07:36,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:36,455 INFO L495 AbstractCegarLoop]: Abstraction has 2173 states and 2749 transitions. [2023-12-15 18:07:36,455 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 18:07:36,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 2749 transitions. [2023-12-15 18:07:36,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-15 18:07:36,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:36,461 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 18:07:36,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:07:36,671 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,SelfDestructingSolverStorable14 [2023-12-15 18:07:36,671 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:36,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:36,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1140442716, now seen corresponding path program 1 times [2023-12-15 18:07:36,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:36,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254636007] [2023-12-15 18:07:36,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:36,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:07:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-15 18:07:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-15 18:07:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-15 18:07:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-15 18:07:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-15 18:07:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-15 18:07:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,749 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 18:07:36,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:36,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254636007] [2023-12-15 18:07:36,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254636007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:36,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:36,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:07:36,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787320583] [2023-12-15 18:07:36,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:36,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:36,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:36,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:36,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:07:36,750 INFO L87 Difference]: Start difference. First operand 2173 states and 2749 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 18:07:37,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:37,431 INFO L93 Difference]: Finished difference Result 2238 states and 2817 transitions. [2023-12-15 18:07:37,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:37,432 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 18:07:37,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:37,436 INFO L225 Difference]: With dead ends: 2238 [2023-12-15 18:07:37,436 INFO L226 Difference]: Without dead ends: 1836 [2023-12-15 18:07:37,438 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 18:07:37,438 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 896 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:37,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 995 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:07:37,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2023-12-15 18:07:37,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1774. [2023-12-15 18:07:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1437 states have (on average 1.3041057759220598) internal successors, (1874), 1449 states have internal predecessors, (1874), 168 states have call successors, (168), 122 states have call predecessors, (168), 167 states have return successors, (234), 203 states have call predecessors, (234), 167 states have call successors, (234) [2023-12-15 18:07:37,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2276 transitions. [2023-12-15 18:07:37,573 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2276 transitions. Word has length 133 [2023-12-15 18:07:37,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:37,573 INFO L495 AbstractCegarLoop]: Abstraction has 1774 states and 2276 transitions. [2023-12-15 18:07:37,573 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 18:07:37,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2276 transitions. [2023-12-15 18:07:37,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-15 18:07:37,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:37,577 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 18:07:37,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:07:37,577 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:37,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:37,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1455665359, now seen corresponding path program 1 times [2023-12-15 18:07:37,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:37,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729902275] [2023-12-15 18:07:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:37,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 18:07:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 18:07:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-15 18:07:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-15 18:07:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 18:07:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-15 18:07:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-15 18:07:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:37,688 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 18:07:37,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:37,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729902275] [2023-12-15 18:07:37,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729902275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:37,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:37,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:37,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430068394] [2023-12-15 18:07:37,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:37,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:37,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:37,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:37,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:37,691 INFO L87 Difference]: Start difference. First operand 1774 states and 2276 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 18:07:38,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:38,483 INFO L93 Difference]: Finished difference Result 3121 states and 3945 transitions. [2023-12-15 18:07:38,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:07:38,483 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 18:07:38,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:38,487 INFO L225 Difference]: With dead ends: 3121 [2023-12-15 18:07:38,487 INFO L226 Difference]: Without dead ends: 1881 [2023-12-15 18:07:38,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:07:38,491 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 568 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:38,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1636 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:07:38,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2023-12-15 18:07:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1699. [2023-12-15 18:07:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1384 states have (on average 1.3041907514450868) internal successors, (1805), 1397 states have internal predecessors, (1805), 159 states have call successors, (159), 117 states have call predecessors, (159), 154 states have return successors, (218), 185 states have call predecessors, (218), 158 states have call successors, (218) [2023-12-15 18:07:38,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2182 transitions. [2023-12-15 18:07:38,593 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2182 transitions. Word has length 145 [2023-12-15 18:07:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:38,593 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2182 transitions. [2023-12-15 18:07:38,593 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 18:07:38,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2182 transitions. [2023-12-15 18:07:38,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-15 18:07:38,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:38,596 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 18:07:38,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:07:38,596 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:38,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:38,597 INFO L85 PathProgramCache]: Analyzing trace with hash 210967997, now seen corresponding path program 1 times [2023-12-15 18:07:38,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:38,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31735418] [2023-12-15 18:07:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:38,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-15 18:07:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-15 18:07:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-15 18:07:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-15 18:07:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-15 18:07:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-15 18:07:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-15 18:07:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,811 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 18:07:38,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:38,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31735418] [2023-12-15 18:07:38,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31735418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:07:38,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776566454] [2023-12-15 18:07:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:38,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:07:38,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:07:38,817 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 18:07:38,822 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 18:07:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:38,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 18:07:38,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:07:39,099 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 18:07:39,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:07:39,318 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 18:07:39,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776566454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:07:39,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:07:39,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-12-15 18:07:39,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995867684] [2023-12-15 18:07:39,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:07:39,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-15 18:07:39,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:39,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-15 18:07:39,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-15 18:07:39,320 INFO L87 Difference]: Start difference. First operand 1699 states and 2182 transitions. Second operand has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2023-12-15 18:07:40,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:40,710 INFO L93 Difference]: Finished difference Result 3506 states and 4470 transitions. [2023-12-15 18:07:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-15 18:07:40,711 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 147 [2023-12-15 18:07:40,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:40,716 INFO L225 Difference]: With dead ends: 3506 [2023-12-15 18:07:40,716 INFO L226 Difference]: Without dead ends: 2204 [2023-12-15 18:07:40,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2023-12-15 18:07:40,719 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1905 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:40,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1935 Valid, 1732 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 18:07:40,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2023-12-15 18:07:40,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 2060. [2023-12-15 18:07:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1633 states have (on average 1.273116962645438) internal successors, (2079), 1654 states have internal predecessors, (2079), 213 states have call successors, (213), 167 states have call predecessors, (213), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2023-12-15 18:07:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2624 transitions. [2023-12-15 18:07:40,841 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2624 transitions. Word has length 147 [2023-12-15 18:07:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:40,842 INFO L495 AbstractCegarLoop]: Abstraction has 2060 states and 2624 transitions. [2023-12-15 18:07:40,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2023-12-15 18:07:40,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2624 transitions. [2023-12-15 18:07:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 18:07:40,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:40,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:40,860 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 18:07:41,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 18:07:41,055 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:41,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:41,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1894679752, now seen corresponding path program 1 times [2023-12-15 18:07:41,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:41,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470652670] [2023-12-15 18:07:41,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:41,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:41,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:07:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:07:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:41,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:07:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:41,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:07:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:41,225 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 18:07:41,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:41,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470652670] [2023-12-15 18:07:41,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470652670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:41,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:41,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 18:07:41,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891378685] [2023-12-15 18:07:41,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:41,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 18:07:41,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:41,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 18:07:41,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:07:41,227 INFO L87 Difference]: Start difference. First operand 2060 states and 2624 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:07:42,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:42,842 INFO L93 Difference]: Finished difference Result 2462 states and 3293 transitions. [2023-12-15 18:07:42,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:42,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-15 18:07:42,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:42,847 INFO L225 Difference]: With dead ends: 2462 [2023-12-15 18:07:42,847 INFO L226 Difference]: Without dead ends: 2170 [2023-12-15 18:07:42,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:07:42,849 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 925 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:42,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 744 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 18:07:42,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2170 states. [2023-12-15 18:07:43,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2170 to 2060. [2023-12-15 18:07:43,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1633 states have (on average 1.2725045927740355) internal successors, (2078), 1654 states have internal predecessors, (2078), 213 states have call successors, (213), 167 states have call predecessors, (213), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2023-12-15 18:07:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2623 transitions. [2023-12-15 18:07:43,081 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2623 transitions. Word has length 141 [2023-12-15 18:07:43,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:43,081 INFO L495 AbstractCegarLoop]: Abstraction has 2060 states and 2623 transitions. [2023-12-15 18:07:43,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:07:43,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2623 transitions. [2023-12-15 18:07:43,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 18:07:43,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:43,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:43,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:07:43,086 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:43,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:43,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1349807178, now seen corresponding path program 1 times [2023-12-15 18:07:43,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:43,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934116050] [2023-12-15 18:07:43,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:43,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:43,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:43,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:07:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:43,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:07:43,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:43,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:07:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:43,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:07:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:43,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:43,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:43,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934116050] [2023-12-15 18:07:43,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934116050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:43,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:43,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:07:43,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112863401] [2023-12-15 18:07:43,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:43,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:43,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:43,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:43,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:07:43,261 INFO L87 Difference]: Start difference. First operand 2060 states and 2623 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 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 18:07:45,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:45,714 INFO L93 Difference]: Finished difference Result 2863 states and 3961 transitions. [2023-12-15 18:07:45,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:07:45,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 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 141 [2023-12-15 18:07:45,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:45,720 INFO L225 Difference]: With dead ends: 2863 [2023-12-15 18:07:45,720 INFO L226 Difference]: Without dead ends: 2579 [2023-12-15 18:07:45,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:07:45,723 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 1458 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:45,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1094 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 18:07:45,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2023-12-15 18:07:45,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2360. [2023-12-15 18:07:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 1907 states have (on average 1.3256423702149973) internal successors, (2528), 1929 states have internal predecessors, (2528), 232 states have call successors, (232), 173 states have call predecessors, (232), 219 states have return successors, (354), 258 states have call predecessors, (354), 231 states have call successors, (354) [2023-12-15 18:07:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 3114 transitions. [2023-12-15 18:07:45,981 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 3114 transitions. Word has length 141 [2023-12-15 18:07:45,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:45,981 INFO L495 AbstractCegarLoop]: Abstraction has 2360 states and 3114 transitions. [2023-12-15 18:07:45,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 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 18:07:45,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 3114 transitions. [2023-12-15 18:07:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 18:07:45,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:45,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:45,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:07:45,985 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:45,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:45,986 INFO L85 PathProgramCache]: Analyzing trace with hash -950615946, now seen corresponding path program 1 times [2023-12-15 18:07:45,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:45,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108469953] [2023-12-15 18:07:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:45,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:46,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:46,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:07:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:46,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:07:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:46,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:07:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:46,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:07:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:46,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:46,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108469953] [2023-12-15 18:07:46,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108469953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:46,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:46,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:46,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53879965] [2023-12-15 18:07:46,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:46,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:46,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:46,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:46,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:46,196 INFO L87 Difference]: Start difference. First operand 2360 states and 3114 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 18:07:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:49,521 INFO L93 Difference]: Finished difference Result 3588 states and 5159 transitions. [2023-12-15 18:07:49,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:07:49,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2023-12-15 18:07:49,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:49,533 INFO L225 Difference]: With dead ends: 3588 [2023-12-15 18:07:49,533 INFO L226 Difference]: Without dead ends: 3004 [2023-12-15 18:07:49,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:07:49,535 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 1485 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 3434 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 3525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:49,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1952 Invalid, 3525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3434 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:07:49,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2023-12-15 18:07:49,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 2637. [2023-12-15 18:07:49,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2637 states, 2158 states have (on average 1.3586654309545876) internal successors, (2932), 2181 states have internal predecessors, (2932), 251 states have call successors, (251), 179 states have call predecessors, (251), 226 states have return successors, (375), 278 states have call predecessors, (375), 250 states have call successors, (375) [2023-12-15 18:07:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 3558 transitions. [2023-12-15 18:07:49,785 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 3558 transitions. Word has length 141 [2023-12-15 18:07:49,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:49,785 INFO L495 AbstractCegarLoop]: Abstraction has 2637 states and 3558 transitions. [2023-12-15 18:07:49,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 18:07:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 3558 transitions. [2023-12-15 18:07:49,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 18:07:49,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:49,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:49,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:07:49,790 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:49,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:49,790 INFO L85 PathProgramCache]: Analyzing trace with hash -462568840, now seen corresponding path program 1 times [2023-12-15 18:07:49,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:49,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786547547] [2023-12-15 18:07:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:49,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:49,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:49,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:07:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:49,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:07:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:49,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:07:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:49,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:07:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:49,988 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 18:07:49,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:49,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786547547] [2023-12-15 18:07:49,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786547547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:49,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:49,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:49,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317242409] [2023-12-15 18:07:49,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:49,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:49,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:49,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:49,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:49,990 INFO L87 Difference]: Start difference. First operand 2637 states and 3558 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 18:07:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:53,158 INFO L93 Difference]: Finished difference Result 4650 states and 6903 transitions. [2023-12-15 18:07:53,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:07:53,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2023-12-15 18:07:53,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:53,171 INFO L225 Difference]: With dead ends: 4650 [2023-12-15 18:07:53,171 INFO L226 Difference]: Without dead ends: 3789 [2023-12-15 18:07:53,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:07:53,176 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1483 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 3430 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:53,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1950 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3430 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 18:07:53,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3789 states. [2023-12-15 18:07:53,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3789 to 3192. [2023-12-15 18:07:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2661 states have (on average 1.4058624577226606) internal successors, (3741), 2686 states have internal predecessors, (3741), 289 states have call successors, (289), 191 states have call predecessors, (289), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2023-12-15 18:07:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4451 transitions. [2023-12-15 18:07:53,462 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4451 transitions. Word has length 141 [2023-12-15 18:07:53,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:53,462 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 4451 transitions. [2023-12-15 18:07:53,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 18:07:53,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4451 transitions. [2023-12-15 18:07:53,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 18:07:53,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:53,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:53,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:07:53,466 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:53,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:53,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1555204042, now seen corresponding path program 1 times [2023-12-15 18:07:53,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:53,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238939438] [2023-12-15 18:07:53,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:53,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:53,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:53,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:07:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:53,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:07:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:53,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:07:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:07:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:53,642 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 18:07:53,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:53,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238939438] [2023-12-15 18:07:53,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238939438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:53,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:53,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:53,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103905710] [2023-12-15 18:07:53,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:53,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:53,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:53,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:53,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:53,643 INFO L87 Difference]: Start difference. First operand 3192 states and 4451 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 18:07:55,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:55,479 INFO L93 Difference]: Finished difference Result 5195 states and 7789 transitions. [2023-12-15 18:07:55,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:55,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2023-12-15 18:07:55,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:55,491 INFO L225 Difference]: With dead ends: 5195 [2023-12-15 18:07:55,491 INFO L226 Difference]: Without dead ends: 3779 [2023-12-15 18:07:55,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:07:55,496 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1195 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 1792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:55,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 1111 Invalid, 1792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 18:07:55,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2023-12-15 18:07:55,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 3192. [2023-12-15 18:07:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2661 states have (on average 1.4039834648628335) internal successors, (3736), 2686 states have internal predecessors, (3736), 289 states have call successors, (289), 191 states have call predecessors, (289), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2023-12-15 18:07:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4446 transitions. [2023-12-15 18:07:55,811 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4446 transitions. Word has length 141 [2023-12-15 18:07:55,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:55,811 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 4446 transitions. [2023-12-15 18:07:55,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 18:07:55,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4446 transitions. [2023-12-15 18:07:55,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 18:07:55,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:55,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:55,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 18:07:55,816 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:55,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:55,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1457590968, now seen corresponding path program 1 times [2023-12-15 18:07:55,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:55,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713529589] [2023-12-15 18:07:55,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:55,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:55,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:55,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:07:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:55,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:07:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:55,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:07:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:56,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:07:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:56,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:56,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713529589] [2023-12-15 18:07:56,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713529589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:56,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:56,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:56,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45831682] [2023-12-15 18:07:56,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:56,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:56,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:56,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:56,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:56,011 INFO L87 Difference]: Start difference. First operand 3192 states and 4446 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 18:07:57,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:57,805 INFO L93 Difference]: Finished difference Result 5189 states and 7763 transitions. [2023-12-15 18:07:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:57,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2023-12-15 18:07:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:57,816 INFO L225 Difference]: With dead ends: 5189 [2023-12-15 18:07:57,816 INFO L226 Difference]: Without dead ends: 3773 [2023-12-15 18:07:57,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:07:57,822 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1119 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:57,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1112 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 18:07:57,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2023-12-15 18:07:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3192. [2023-12-15 18:07:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2661 states have (on average 1.4021044720030065) internal successors, (3731), 2686 states have internal predecessors, (3731), 289 states have call successors, (289), 191 states have call predecessors, (289), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2023-12-15 18:07:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4441 transitions. [2023-12-15 18:07:58,163 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4441 transitions. Word has length 141 [2023-12-15 18:07:58,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:58,163 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 4441 transitions. [2023-12-15 18:07:58,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 18:07:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4441 transitions. [2023-12-15 18:07:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 18:07:58,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:58,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:58,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 18:07:58,167 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:58,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:58,167 INFO L85 PathProgramCache]: Analyzing trace with hash -384884746, now seen corresponding path program 1 times [2023-12-15 18:07:58,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:58,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762122833] [2023-12-15 18:07:58,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:58,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:58,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:58,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:07:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:58,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:07:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:58,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:07:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:07:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:58,347 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 18:07:58,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:58,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762122833] [2023-12-15 18:07:58,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762122833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:58,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:58,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:58,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488758657] [2023-12-15 18:07:58,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:58,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:58,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:58,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:58,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:58,348 INFO L87 Difference]: Start difference. First operand 3192 states and 4441 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 18:08:00,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:00,116 INFO L93 Difference]: Finished difference Result 5182 states and 7735 transitions. [2023-12-15 18:08:00,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:08:00,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2023-12-15 18:08:00,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:00,126 INFO L225 Difference]: With dead ends: 5182 [2023-12-15 18:08:00,126 INFO L226 Difference]: Without dead ends: 3766 [2023-12-15 18:08:00,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:08:00,130 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1122 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:00,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1112 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 18:08:00,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2023-12-15 18:08:00,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3192. [2023-12-15 18:08:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2661 states have (on average 1.4002254791431792) internal successors, (3726), 2686 states have internal predecessors, (3726), 289 states have call successors, (289), 191 states have call predecessors, (289), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2023-12-15 18:08:00,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4436 transitions. [2023-12-15 18:08:00,482 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4436 transitions. Word has length 141 [2023-12-15 18:08:00,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:00,482 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 4436 transitions. [2023-12-15 18:08:00,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 18:08:00,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4436 transitions. [2023-12-15 18:08:00,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 18:08:00,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:00,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:00,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 18:08:00,486 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:00,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:00,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2106887432, now seen corresponding path program 1 times [2023-12-15 18:08:00,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:00,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807812494] [2023-12-15 18:08:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:00,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:00,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:00,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:08:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:08:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:00,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:08:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:00,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:08:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:00,660 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 18:08:00,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:00,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807812494] [2023-12-15 18:08:00,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807812494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:00,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:00,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:08:00,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197837625] [2023-12-15 18:08:00,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:00,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:08:00,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:00,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:08:00,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:08:00,662 INFO L87 Difference]: Start difference. First operand 3192 states and 4436 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 18:08:02,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:08:02,390 INFO L93 Difference]: Finished difference Result 5170 states and 7697 transitions. [2023-12-15 18:08:02,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:08:02,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 141 [2023-12-15 18:08:02,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:08:02,398 INFO L225 Difference]: With dead ends: 5170 [2023-12-15 18:08:02,398 INFO L226 Difference]: Without dead ends: 3754 [2023-12-15 18:08:02,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:08:02,402 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1119 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:02,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1112 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 18:08:02,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2023-12-15 18:08:02,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3192. [2023-12-15 18:08:02,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2661 states have (on average 1.3983464862833521) internal successors, (3721), 2686 states have internal predecessors, (3721), 289 states have call successors, (289), 191 states have call predecessors, (289), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2023-12-15 18:08:02,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4431 transitions. [2023-12-15 18:08:02,698 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4431 transitions. Word has length 141 [2023-12-15 18:08:02,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:08:02,698 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 4431 transitions. [2023-12-15 18:08:02,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 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 18:08:02,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4431 transitions. [2023-12-15 18:08:02,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 18:08:02,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:08:02,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:08:02,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 18:08:02,703 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:08:02,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:08:02,703 INFO L85 PathProgramCache]: Analyzing trace with hash -177955206, now seen corresponding path program 1 times [2023-12-15 18:08:02,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:08:02,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870750818] [2023-12-15 18:08:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:08:02,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:08:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:02,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:08:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-15 18:08:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:02,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-15 18:08:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:02,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-15 18:08:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:02,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-15 18:08:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:08:02,904 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 18:08:02,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:08:02,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870750818] [2023-12-15 18:08:02,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870750818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:08:02,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:08:02,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:08:02,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904263595] [2023-12-15 18:08:02,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:08:02,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:08:02,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:08:02,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:08:02,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:08:02,906 INFO L87 Difference]: Start difference. First operand 3192 states and 4431 transitions. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Received shutdown request... [2023-12-15 18:08:03,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 18:08:03,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-15 18:08:03,958 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 379 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:08:03,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 318 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:08:03,959 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:08:03,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 18:08:03,960 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (3192states) and FLOYD_HOARE automaton (currently 8 states, 9 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. [2023-12-15 18:08:03,961 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:08:03,965 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] [2023-12-15 18:08:03,967 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:08:03,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:08:03 BoogieIcfgContainer [2023-12-15 18:08:03,969 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:08:03,969 INFO L158 Benchmark]: Toolchain (without parser) took 50453.57ms. Allocated memory was 271.6MB in the beginning and 1.0GB in the end (delta: 760.2MB). Free memory was 214.9MB in the beginning and 926.0MB in the end (delta: -711.1MB). Peak memory consumption was 49.8MB. Max. memory is 8.0GB. [2023-12-15 18:08:03,969 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 188.7MB. Free memory was 141.1MB in the beginning and 141.0MB in the end (delta: 129.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:08:03,970 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.82ms. Allocated memory is still 271.6MB. Free memory was 214.9MB in the beginning and 188.9MB in the end (delta: 26.0MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-15 18:08:03,970 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.96ms. Allocated memory is still 271.6MB. Free memory was 188.9MB in the beginning and 184.5MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 18:08:03,971 INFO L158 Benchmark]: Boogie Preprocessor took 109.03ms. Allocated memory is still 271.6MB. Free memory was 184.5MB in the beginning and 178.9MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 18:08:03,974 INFO L158 Benchmark]: RCFGBuilder took 1133.49ms. Allocated memory is still 271.6MB. Free memory was 178.9MB in the beginning and 192.0MB in the end (delta: -13.1MB). Peak memory consumption was 24.7MB. Max. memory is 8.0GB. [2023-12-15 18:08:03,974 INFO L158 Benchmark]: TraceAbstraction took 48655.59ms. Allocated memory was 271.6MB in the beginning and 1.0GB in the end (delta: 760.2MB). Free memory was 191.4MB in the beginning and 926.0MB in the end (delta: -734.6MB). Peak memory consumption was 25.1MB. Max. memory is 8.0GB. [2023-12-15 18:08:03,983 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 188.7MB. Free memory was 141.1MB in the beginning and 141.0MB in the end (delta: 129.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 481.82ms. Allocated memory is still 271.6MB. Free memory was 214.9MB in the beginning and 188.9MB in the end (delta: 26.0MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 67.96ms. Allocated memory is still 271.6MB. Free memory was 188.9MB in the beginning and 184.5MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 109.03ms. Allocated memory is still 271.6MB. Free memory was 184.5MB in the beginning and 178.9MB in the end (delta: 5.5MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 1133.49ms. Allocated memory is still 271.6MB. Free memory was 178.9MB in the beginning and 192.0MB in the end (delta: -13.1MB). Peak memory consumption was 24.7MB. Max. memory is 8.0GB. * TraceAbstraction took 48655.59ms. Allocated memory was 271.6MB in the beginning and 1.0GB in the end (delta: 760.2MB). Free memory was 191.4MB in the beginning and 926.0MB in the end (delta: -734.6MB). Peak memory consumption was 25.1MB. 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: 496]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 496). Cancelled while NwaCegarLoop was constructing difference of abstraction (3192states) and FLOYD_HOARE automaton (currently 8 states, 9 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - 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 (3192states) and FLOYD_HOARE automaton (currently 8 states, 9 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 393 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 48.6s, OverallIterations: 27, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 37.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32804 SdHoareTripleChecker+Valid, 27.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32196 mSDsluCounter, 37403 SdHoareTripleChecker+Invalid, 23.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28732 mSDsCounter, 3874 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39562 IncrementalHoareTripleChecker+Invalid, 43436 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3874 mSolverCounterUnsat, 8671 mSDtfsCounter, 39562 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1457 GetRequests, 1094 SyntacticMatches, 1 SemanticMatches, 361 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5085occurred in iteration=13, InterpolantAutomatonStates: 321, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.9s AutomataMinimizationTime, 26 MinimizatonAttempts, 8585 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 3072 NumberOfCodeBlocks, 3072 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 3255 ConstructedInterpolants, 0 QuantifiedInterpolants, 7829 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1518 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 32 InterpolantComputations, 25 PerfectInterpolantSequences, 555/578 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