/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.08.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:06:42,202 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:06:42,265 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:06:42,269 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:06:42,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:06:42,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:06:42,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:06:42,297 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:06:42,297 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:06:42,300 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:06:42,300 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:06:42,300 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:06:42,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:06:42,301 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:06:42,302 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:06:42,302 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:06:42,302 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:06:42,302 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:06:42,303 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:06:42,303 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:06:42,303 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:06:42,304 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:06:42,304 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:06:42,304 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:06:42,304 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:06:42,304 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:06:42,304 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:06:42,305 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:06:42,305 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:06:42,305 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:06:42,306 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:06:42,306 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:06:42,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:06:42,306 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:06:42,306 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:06:42,307 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:06:42,307 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:06:42,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:06:42,307 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:06:42,307 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:06:42,307 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:06:42,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:06:42,308 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:06:42,308 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:06:42,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:06:42,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:06:42,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:06:42,483 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:06:42,483 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:06:42,484 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c [2023-12-15 18:06:43,580 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:06:43,761 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:06:43,762 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c [2023-12-15 18:06:43,771 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a57f1465/92c5a605411a46dc9b915844828101d8/FLAG1e98bc8a8 [2023-12-15 18:06:43,781 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a57f1465/92c5a605411a46dc9b915844828101d8 [2023-12-15 18:06:43,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:06:43,784 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:06:43,785 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:06:43,785 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:06:43,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:06:43,799 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:06:43" (1/1) ... [2023-12-15 18:06:43,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fca7ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:43, skipping insertion in model container [2023-12-15 18:06:43,800 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:06:43" (1/1) ... [2023-12-15 18:06:43,843 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:06:43,949 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.08.cil-1.c[914,927] [2023-12-15 18:06:43,999 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.08.cil-1.c[7115,7128] [2023-12-15 18:06:44,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:06:44,093 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:06:44,102 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.08.cil-1.c[914,927] [2023-12-15 18:06:44,118 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.08.cil-1.c[7115,7128] [2023-12-15 18:06:44,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:06:44,199 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:06:44,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:44 WrapperNode [2023-12-15 18:06:44,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:06:44,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:06:44,212 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:06:44,212 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:06:44,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:44" (1/1) ... [2023-12-15 18:06:44,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:44" (1/1) ... [2023-12-15 18:06:44,283 INFO L138 Inliner]: procedures = 69, calls = 81, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 828 [2023-12-15 18:06:44,283 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:06:44,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:06:44,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:06:44,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:06:44,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:44" (1/1) ... [2023-12-15 18:06:44,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:44" (1/1) ... [2023-12-15 18:06:44,302 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:44" (1/1) ... [2023-12-15 18:06:44,335 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:06:44,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:44" (1/1) ... [2023-12-15 18:06:44,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:44" (1/1) ... [2023-12-15 18:06:44,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:44" (1/1) ... [2023-12-15 18:06:44,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:44" (1/1) ... [2023-12-15 18:06:44,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:44" (1/1) ... [2023-12-15 18:06:44,355 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:44" (1/1) ... [2023-12-15 18:06:44,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:06:44,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:06:44,360 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:06:44,360 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:06:44,360 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:44" (1/1) ... [2023-12-15 18:06:44,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:06:44,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:06:44,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:06:44,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:06:44,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:06:44,480 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 18:06:44,480 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 18:06:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-15 18:06:44,482 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-15 18:06:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-15 18:06:44,482 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-15 18:06:44,482 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-15 18:06:44,483 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-15 18:06:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-15 18:06:44,483 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-15 18:06:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-15 18:06:44,483 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-15 18:06:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-15 18:06:44,483 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-15 18:06:44,483 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-15 18:06:44,483 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-15 18:06:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-15 18:06:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-15 18:06:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-15 18:06:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-15 18:06:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-15 18:06:44,484 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-15 18:06:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:06:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-15 18:06:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-15 18:06:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-15 18:06:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-15 18:06:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:06:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:06:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-15 18:06:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-15 18:06:44,590 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:06:44,592 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:06:45,251 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:06:45,308 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:06:45,309 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-12-15 18:06:45,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:06:45 BoogieIcfgContainer [2023-12-15 18:06:45,309 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:06:45,311 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:06:45,311 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:06:45,313 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:06:45,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:06:43" (1/3) ... [2023-12-15 18:06:45,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59cda416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:06:45, skipping insertion in model container [2023-12-15 18:06:45,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:44" (2/3) ... [2023-12-15 18:06:45,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59cda416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:06:45, skipping insertion in model container [2023-12-15 18:06:45,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:06:45" (3/3) ... [2023-12-15 18:06:45,315 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.08.cil-1.c [2023-12-15 18:06:45,327 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:06:45,327 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:06:45,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:06:45,388 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;@7415fc46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:06:45,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:06:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 347 states, 294 states have (on average 1.6972789115646258) internal successors, (499), 300 states have internal predecessors, (499), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-15 18:06:45,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:45,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:45,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:45,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:45,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:45,409 INFO L85 PathProgramCache]: Analyzing trace with hash 77441873, now seen corresponding path program 1 times [2023-12-15 18:06:45,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:45,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526550684] [2023-12-15 18:06:45,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:45,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:45,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:45,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526550684] [2023-12-15 18:06:45,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526550684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:45,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:45,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:06:45,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935705845] [2023-12-15 18:06:45,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:45,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:06:45,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:06:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:06:45,973 INFO L87 Difference]: Start difference. First operand has 347 states, 294 states have (on average 1.6972789115646258) internal successors, (499), 300 states have internal predecessors, (499), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:46,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:46,938 INFO L93 Difference]: Finished difference Result 798 states and 1301 transitions. [2023-12-15 18:06:46,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:06:46,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-15 18:06:46,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:46,950 INFO L225 Difference]: With dead ends: 798 [2023-12-15 18:06:46,950 INFO L226 Difference]: Without dead ends: 467 [2023-12-15 18:06:46,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:06:46,956 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 920 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:46,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 1370 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:06:46,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-12-15 18:06:47,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 430. [2023-12-15 18:06:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 359 states have (on average 1.5571030640668524) internal successors, (559), 365 states have internal predecessors, (559), 47 states have call successors, (47), 21 states have call predecessors, (47), 22 states have return successors, (50), 46 states have call predecessors, (50), 45 states have call successors, (50) [2023-12-15 18:06:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 656 transitions. [2023-12-15 18:06:47,021 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 656 transitions. Word has length 58 [2023-12-15 18:06:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:47,021 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 656 transitions. [2023-12-15 18:06:47,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:47,021 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 656 transitions. [2023-12-15 18:06:47,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:47,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:47,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:47,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:06:47,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:47,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:47,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1013720174, now seen corresponding path program 1 times [2023-12-15 18:06:47,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:47,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217451605] [2023-12-15 18:06:47,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:47,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:47,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:47,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:47,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:47,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:47,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:47,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:47,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:47,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217451605] [2023-12-15 18:06:47,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217451605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:47,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:47,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:06:47,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704461926] [2023-12-15 18:06:47,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:47,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:06:47,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:47,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:06:47,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:06:47,172 INFO L87 Difference]: Start difference. First operand 430 states and 656 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:48,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:48,184 INFO L93 Difference]: Finished difference Result 750 states and 1106 transitions. [2023-12-15 18:06:48,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:06:48,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-15 18:06:48,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:48,189 INFO L225 Difference]: With dead ends: 750 [2023-12-15 18:06:48,189 INFO L226 Difference]: Without dead ends: 588 [2023-12-15 18:06:48,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-15 18:06:48,191 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 1059 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:48,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1596 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:06:48,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-12-15 18:06:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 518. [2023-12-15 18:06:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 427 states have (on average 1.5339578454332552) internal successors, (655), 435 states have internal predecessors, (655), 58 states have call successors, (58), 28 states have call predecessors, (58), 31 states have return successors, (69), 58 states have call predecessors, (69), 56 states have call successors, (69) [2023-12-15 18:06:48,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 782 transitions. [2023-12-15 18:06:48,224 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 782 transitions. Word has length 58 [2023-12-15 18:06:48,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:48,224 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 782 transitions. [2023-12-15 18:06:48,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:48,225 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 782 transitions. [2023-12-15 18:06:48,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:48,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:48,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:48,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:06:48,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:48,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:48,228 INFO L85 PathProgramCache]: Analyzing trace with hash 914552528, now seen corresponding path program 1 times [2023-12-15 18:06:48,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:48,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584516240] [2023-12-15 18:06:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:48,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:48,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:48,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584516240] [2023-12-15 18:06:48,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584516240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:48,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:48,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:06:48,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262258541] [2023-12-15 18:06:48,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:48,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:06:48,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:48,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:06:48,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:06:48,327 INFO L87 Difference]: Start difference. First operand 518 states and 782 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:49,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:49,135 INFO L93 Difference]: Finished difference Result 794 states and 1171 transitions. [2023-12-15 18:06:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:06:49,136 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-15 18:06:49,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:49,140 INFO L225 Difference]: With dead ends: 794 [2023-12-15 18:06:49,140 INFO L226 Difference]: Without dead ends: 550 [2023-12-15 18:06:49,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:06:49,144 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 465 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:49,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1875 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:06:49,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-12-15 18:06:49,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 522. [2023-12-15 18:06:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 430 states have (on average 1.5255813953488373) internal successors, (656), 438 states have internal predecessors, (656), 58 states have call successors, (58), 28 states have call predecessors, (58), 32 states have return successors, (70), 59 states have call predecessors, (70), 56 states have call successors, (70) [2023-12-15 18:06:49,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 784 transitions. [2023-12-15 18:06:49,185 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 784 transitions. Word has length 58 [2023-12-15 18:06:49,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:49,185 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 784 transitions. [2023-12-15 18:06:49,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:49,185 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 784 transitions. [2023-12-15 18:06:49,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:49,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:49,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:49,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:06:49,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:49,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:49,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1329430770, now seen corresponding path program 1 times [2023-12-15 18:06:49,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:49,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262973895] [2023-12-15 18:06:49,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:49,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:49,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:49,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:49,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:49,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:49,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:49,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:49,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:49,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262973895] [2023-12-15 18:06:49,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262973895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:49,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:49,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 18:06:49,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079929790] [2023-12-15 18:06:49,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:49,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:06:49,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:49,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:06:49,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:06:49,285 INFO L87 Difference]: Start difference. First operand 522 states and 784 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 18:06:50,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:50,586 INFO L93 Difference]: Finished difference Result 1746 states and 2482 transitions. [2023-12-15 18:06:50,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-15 18:06:50,586 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-12-15 18:06:50,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:50,592 INFO L225 Difference]: With dead ends: 1746 [2023-12-15 18:06:50,593 INFO L226 Difference]: Without dead ends: 1480 [2023-12-15 18:06:50,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-15 18:06:50,599 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 3093 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3107 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:50,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3107 Valid, 1561 Invalid, 2229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:06:50,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2023-12-15 18:06:50,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1357. [2023-12-15 18:06:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1079 states have (on average 1.4170528266913809) internal successors, (1529), 1102 states have internal predecessors, (1529), 146 states have call successors, (146), 111 states have call predecessors, (146), 130 states have return successors, (184), 146 states have call predecessors, (184), 144 states have call successors, (184) [2023-12-15 18:06:50,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1859 transitions. [2023-12-15 18:06:50,679 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1859 transitions. Word has length 58 [2023-12-15 18:06:50,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:50,684 INFO L495 AbstractCegarLoop]: Abstraction has 1357 states and 1859 transitions. [2023-12-15 18:06:50,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-15 18:06:50,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1859 transitions. [2023-12-15 18:06:50,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:06:50,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:50,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:50,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:06:50,686 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:50,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:50,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1941646022, now seen corresponding path program 1 times [2023-12-15 18:06:50,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:50,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347207203] [2023-12-15 18:06:50,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:50,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:50,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:50,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:50,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:50,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:50,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:50,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:50,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:50,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:50,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347207203] [2023-12-15 18:06:50,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347207203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:50,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:50,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:06:50,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648837087] [2023-12-15 18:06:50,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:50,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:06:50,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:50,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:06:50,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:06:50,826 INFO L87 Difference]: Start difference. First operand 1357 states and 1859 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:51,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:51,640 INFO L93 Difference]: Finished difference Result 2550 states and 3434 transitions. [2023-12-15 18:06:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:06:51,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2023-12-15 18:06:51,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:51,645 INFO L225 Difference]: With dead ends: 2550 [2023-12-15 18:06:51,646 INFO L226 Difference]: Without dead ends: 1455 [2023-12-15 18:06:51,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:06:51,651 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 694 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:51,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1663 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:06:51,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2023-12-15 18:06:51,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1381. [2023-12-15 18:06:51,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1097 states have (on average 1.4029170464904284) internal successors, (1539), 1120 states have internal predecessors, (1539), 146 states have call successors, (146), 111 states have call predecessors, (146), 136 states have return successors, (190), 152 states have call predecessors, (190), 144 states have call successors, (190) [2023-12-15 18:06:51,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1875 transitions. [2023-12-15 18:06:51,708 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1875 transitions. Word has length 59 [2023-12-15 18:06:51,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:51,708 INFO L495 AbstractCegarLoop]: Abstraction has 1381 states and 1875 transitions. [2023-12-15 18:06:51,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:51,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1875 transitions. [2023-12-15 18:06:51,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:06:51,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:51,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:51,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:06:51,709 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:51,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:51,710 INFO L85 PathProgramCache]: Analyzing trace with hash -430093240, now seen corresponding path program 1 times [2023-12-15 18:06:51,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:51,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183730040] [2023-12-15 18:06:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:51,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:51,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:51,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:51,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:51,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:51,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:51,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:51,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:51,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183730040] [2023-12-15 18:06:51,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183730040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:51,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:51,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:06:51,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463930236] [2023-12-15 18:06:51,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:51,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:06:51,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:51,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:06:51,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:06:51,840 INFO L87 Difference]: Start difference. First operand 1381 states and 1875 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:52,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:52,823 INFO L93 Difference]: Finished difference Result 2531 states and 3317 transitions. [2023-12-15 18:06:52,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:06:52,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2023-12-15 18:06:52,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:52,829 INFO L225 Difference]: With dead ends: 2531 [2023-12-15 18:06:52,829 INFO L226 Difference]: Without dead ends: 1619 [2023-12-15 18:06:52,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-12-15 18:06:52,833 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1293 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:52,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 1149 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:06:52,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2023-12-15 18:06:52,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1326. [2023-12-15 18:06:52,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1058 states have (on average 1.3998109640831757) internal successors, (1481), 1076 states have internal predecessors, (1481), 140 states have call successors, (140), 106 states have call predecessors, (140), 126 states have return successors, (175), 145 states have call predecessors, (175), 138 states have call successors, (175) [2023-12-15 18:06:52,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1796 transitions. [2023-12-15 18:06:52,882 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1796 transitions. Word has length 59 [2023-12-15 18:06:52,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:52,883 INFO L495 AbstractCegarLoop]: Abstraction has 1326 states and 1796 transitions. [2023-12-15 18:06:52,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:52,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1796 transitions. [2023-12-15 18:06:52,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:06:52,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:52,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:52,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:06:52,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:52,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:52,887 INFO L85 PathProgramCache]: Analyzing trace with hash -211238522, now seen corresponding path program 1 times [2023-12-15 18:06:52,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:52,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196952997] [2023-12-15 18:06:52,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:52,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:52,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:52,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:52,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:52,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:52,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:52,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:52,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:52,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196952997] [2023-12-15 18:06:52,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196952997] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:52,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:52,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:52,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042514053] [2023-12-15 18:06:52,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:52,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:52,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:52,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:52,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:52,978 INFO L87 Difference]: Start difference. First operand 1326 states and 1796 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:53,614 INFO L93 Difference]: Finished difference Result 3475 states and 4567 transitions. [2023-12-15 18:06:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:06:53,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2023-12-15 18:06:53,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:53,624 INFO L225 Difference]: With dead ends: 3475 [2023-12-15 18:06:53,624 INFO L226 Difference]: Without dead ends: 2412 [2023-12-15 18:06:53,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-15 18:06:53,627 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1021 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:53,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 1131 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:06:53,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2023-12-15 18:06:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2296. [2023-12-15 18:06:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 1785 states have (on average 1.3333333333333333) internal successors, (2380), 1820 states have internal predecessors, (2380), 259 states have call successors, (259), 205 states have call predecessors, (259), 250 states have return successors, (366), 273 states have call predecessors, (366), 257 states have call successors, (366) [2023-12-15 18:06:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3005 transitions. [2023-12-15 18:06:53,721 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3005 transitions. Word has length 59 [2023-12-15 18:06:53,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:53,721 INFO L495 AbstractCegarLoop]: Abstraction has 2296 states and 3005 transitions. [2023-12-15 18:06:53,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:53,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3005 transitions. [2023-12-15 18:06:53,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:06:53,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:53,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:53,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:06:53,722 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:53,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:53,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1570609934, now seen corresponding path program 1 times [2023-12-15 18:06:53,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:53,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451720772] [2023-12-15 18:06:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:53,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:53,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:53,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:53,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:53,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:53,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:53,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:53,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:53,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:53,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451720772] [2023-12-15 18:06:53,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451720772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:53,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:53,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:06:53,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395541120] [2023-12-15 18:06:53,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:53,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:53,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:53,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:53,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:06:53,780 INFO L87 Difference]: Start difference. First operand 2296 states and 3005 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:54,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:54,442 INFO L93 Difference]: Finished difference Result 5348 states and 6886 transitions. [2023-12-15 18:06:54,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:06:54,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2023-12-15 18:06:54,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:54,453 INFO L225 Difference]: With dead ends: 5348 [2023-12-15 18:06:54,453 INFO L226 Difference]: Without dead ends: 3320 [2023-12-15 18:06:54,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:06:54,458 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 896 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:54,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 911 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:06:54,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2023-12-15 18:06:54,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 3062. [2023-12-15 18:06:54,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3062 states, 2365 states have (on average 1.3137420718816069) internal successors, (3107), 2405 states have internal predecessors, (3107), 351 states have call successors, (351), 285 states have call predecessors, (351), 344 states have return successors, (480), 374 states have call predecessors, (480), 349 states have call successors, (480) [2023-12-15 18:06:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3062 states to 3062 states and 3938 transitions. [2023-12-15 18:06:54,585 INFO L78 Accepts]: Start accepts. Automaton has 3062 states and 3938 transitions. Word has length 60 [2023-12-15 18:06:54,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:54,585 INFO L495 AbstractCegarLoop]: Abstraction has 3062 states and 3938 transitions. [2023-12-15 18:06:54,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:54,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3062 states and 3938 transitions. [2023-12-15 18:06:54,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 18:06:54,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:54,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:54,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:06:54,587 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:54,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:54,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2127657009, now seen corresponding path program 1 times [2023-12-15 18:06:54,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:54,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362654221] [2023-12-15 18:06:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:54,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:54,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:54,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362654221] [2023-12-15 18:06:54,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362654221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:54,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:54,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:06:54,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486053798] [2023-12-15 18:06:54,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:54,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:54,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:54,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:54,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:06:54,632 INFO L87 Difference]: Start difference. First operand 3062 states and 3938 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:55,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:55,152 INFO L93 Difference]: Finished difference Result 6626 states and 8404 transitions. [2023-12-15 18:06:55,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:06:55,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-12-15 18:06:55,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:55,164 INFO L225 Difference]: With dead ends: 6626 [2023-12-15 18:06:55,165 INFO L226 Difference]: Without dead ends: 3830 [2023-12-15 18:06:55,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:06:55,171 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 1248 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:55,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 759 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:06:55,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states. [2023-12-15 18:06:55,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 3566. [2023-12-15 18:06:55,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3566 states, 2755 states have (on average 1.3056261343012705) internal successors, (3597), 2799 states have internal predecessors, (3597), 407 states have call successors, (407), 335 states have call predecessors, (407), 402 states have return successors, (553), 434 states have call predecessors, (553), 405 states have call successors, (553) [2023-12-15 18:06:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 4557 transitions. [2023-12-15 18:06:55,365 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 4557 transitions. Word has length 66 [2023-12-15 18:06:55,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:55,365 INFO L495 AbstractCegarLoop]: Abstraction has 3566 states and 4557 transitions. [2023-12-15 18:06:55,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:55,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 4557 transitions. [2023-12-15 18:06:55,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-15 18:06:55,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:55,366 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:55,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:06:55,367 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:55,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:55,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1016212900, now seen corresponding path program 1 times [2023-12-15 18:06:55,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:55,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763376063] [2023-12-15 18:06:55,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:55,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:55,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:55,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:55,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:55,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:55,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:55,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:55,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:55,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763376063] [2023-12-15 18:06:55,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763376063] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:55,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:55,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:55,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188435730] [2023-12-15 18:06:55,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:55,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:55,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:55,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:55,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:55,420 INFO L87 Difference]: Start difference. First operand 3566 states and 4557 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-15 18:06:56,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:56,136 INFO L93 Difference]: Finished difference Result 4574 states and 5774 transitions. [2023-12-15 18:06:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:06:56,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2023-12-15 18:06:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:56,152 INFO L225 Difference]: With dead ends: 4574 [2023-12-15 18:06:56,152 INFO L226 Difference]: Without dead ends: 4571 [2023-12-15 18:06:56,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-15 18:06:56,154 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 1495 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:56,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 950 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:06:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2023-12-15 18:06:56,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 3986. [2023-12-15 18:06:56,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3986 states, 3068 states have (on average 1.294328552803129) internal successors, (3971), 3115 states have internal predecessors, (3971), 457 states have call successors, (457), 379 states have call predecessors, (457), 459 states have return successors, (630), 494 states have call predecessors, (630), 456 states have call successors, (630) [2023-12-15 18:06:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 5058 transitions. [2023-12-15 18:06:56,357 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 5058 transitions. Word has length 67 [2023-12-15 18:06:56,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:56,358 INFO L495 AbstractCegarLoop]: Abstraction has 3986 states and 5058 transitions. [2023-12-15 18:06:56,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-15 18:06:56,358 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 5058 transitions. [2023-12-15 18:06:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-15 18:06:56,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:56,359 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:56,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:06:56,359 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:56,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:56,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1436679899, now seen corresponding path program 1 times [2023-12-15 18:06:56,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:56,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887661232] [2023-12-15 18:06:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:56,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:56,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:56,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:56,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:56,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:56,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:56,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:56,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:56,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:56,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887661232] [2023-12-15 18:06:56,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887661232] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:06:56,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225880653] [2023-12-15 18:06:56,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:56,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:06:56,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:06:56,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:06:56,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:06:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:56,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 18:06:56,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:06:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:56,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:06:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:56,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225880653] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:06:56,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:06:56,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-12-15 18:06:56,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407687199] [2023-12-15 18:06:56,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:06:56,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:06:56,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:56,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:06:56,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:06:56,799 INFO L87 Difference]: Start difference. First operand 3986 states and 5058 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-15 18:06:58,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:58,332 INFO L93 Difference]: Finished difference Result 7958 states and 9921 transitions. [2023-12-15 18:06:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-15 18:06:58,332 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 68 [2023-12-15 18:06:58,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:58,356 INFO L225 Difference]: With dead ends: 7958 [2023-12-15 18:06:58,356 INFO L226 Difference]: Without dead ends: 7955 [2023-12-15 18:06:58,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2023-12-15 18:06:58,359 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1757 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:58,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 1933 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:06:58,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7955 states. [2023-12-15 18:06:58,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7955 to 7103. [2023-12-15 18:06:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7103 states, 5443 states have (on average 1.2776042623553188) internal successors, (6954), 5525 states have internal predecessors, (6954), 816 states have call successors, (816), 693 states have call predecessors, (816), 842 states have return successors, (1131), 887 states have call predecessors, (1131), 815 states have call successors, (1131) [2023-12-15 18:06:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7103 states to 7103 states and 8901 transitions. [2023-12-15 18:06:58,772 INFO L78 Accepts]: Start accepts. Automaton has 7103 states and 8901 transitions. Word has length 68 [2023-12-15 18:06:58,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:58,772 INFO L495 AbstractCegarLoop]: Abstraction has 7103 states and 8901 transitions. [2023-12-15 18:06:58,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-15 18:06:58,773 INFO L276 IsEmpty]: Start isEmpty. Operand 7103 states and 8901 transitions. [2023-12-15 18:06:58,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 18:06:58,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:58,773 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:58,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:06:58,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 18:06:58,979 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:58,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:58,979 INFO L85 PathProgramCache]: Analyzing trace with hash -557416988, now seen corresponding path program 2 times [2023-12-15 18:06:58,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:58,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670708288] [2023-12-15 18:06:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:58,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:59,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:59,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:59,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670708288] [2023-12-15 18:06:59,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670708288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:59,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:59,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:06:59,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288135525] [2023-12-15 18:06:59,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:59,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:59,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:59,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:59,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:06:59,025 INFO L87 Difference]: Start difference. First operand 7103 states and 8901 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-15 18:06:59,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:59,666 INFO L93 Difference]: Finished difference Result 9491 states and 11904 transitions. [2023-12-15 18:06:59,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:06:59,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2023-12-15 18:06:59,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:59,686 INFO L225 Difference]: With dead ends: 9491 [2023-12-15 18:06:59,686 INFO L226 Difference]: Without dead ends: 3853 [2023-12-15 18:06:59,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 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 18:06:59,696 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 941 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:59,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1015 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 18:06:59,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2023-12-15 18:06:59,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 2917. [2023-12-15 18:06:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2263 states have (on average 1.2845779938135218) internal successors, (2907), 2291 states have internal predecessors, (2907), 335 states have call successors, (335), 275 states have call predecessors, (335), 317 states have return successors, (430), 353 states have call predecessors, (430), 334 states have call successors, (430) [2023-12-15 18:06:59,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3672 transitions. [2023-12-15 18:06:59,859 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3672 transitions. Word has length 71 [2023-12-15 18:06:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:59,859 INFO L495 AbstractCegarLoop]: Abstraction has 2917 states and 3672 transitions. [2023-12-15 18:06:59,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-15 18:06:59,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3672 transitions. [2023-12-15 18:06:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-15 18:06:59,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:59,860 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:59,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:06:59,860 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:59,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:59,861 INFO L85 PathProgramCache]: Analyzing trace with hash -297460082, now seen corresponding path program 1 times [2023-12-15 18:06:59,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:59,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647245686] [2023-12-15 18:06:59,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:59,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:06:59,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:59,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647245686] [2023-12-15 18:06:59,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647245686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:59,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:59,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:06:59,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019429866] [2023-12-15 18:06:59,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:59,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:06:59,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:59,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:06:59,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:06:59,943 INFO L87 Difference]: Start difference. First operand 2917 states and 3672 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 18:07:00,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:00,988 INFO L93 Difference]: Finished difference Result 8235 states and 10203 transitions. [2023-12-15 18:07:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 18:07:00,989 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 18:07:00,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:01,009 INFO L225 Difference]: With dead ends: 8235 [2023-12-15 18:07:01,009 INFO L226 Difference]: Without dead ends: 4845 [2023-12-15 18:07:01,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-12-15 18:07:01,015 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 1493 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:01,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1217 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:07:01,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2023-12-15 18:07:01,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 4585. [2023-12-15 18:07:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4585 states, 3496 states have (on average 1.2468535469107551) internal successors, (4359), 3561 states have internal predecessors, (4359), 535 states have call successors, (535), 447 states have call predecessors, (535), 552 states have return successors, (780), 579 states have call predecessors, (780), 534 states have call successors, (780) [2023-12-15 18:07:01,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4585 states to 4585 states and 5674 transitions. [2023-12-15 18:07:01,263 INFO L78 Accepts]: Start accepts. Automaton has 4585 states and 5674 transitions. Word has length 76 [2023-12-15 18:07:01,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:01,263 INFO L495 AbstractCegarLoop]: Abstraction has 4585 states and 5674 transitions. [2023-12-15 18:07:01,263 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 18:07:01,263 INFO L276 IsEmpty]: Start isEmpty. Operand 4585 states and 5674 transitions. [2023-12-15 18:07:01,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 18:07:01,266 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:01,266 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 18:07:01,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:07:01,266 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:01,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:01,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1658384269, now seen corresponding path program 1 times [2023-12-15 18:07:01,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:01,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964782458] [2023-12-15 18:07:01,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:01,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:01,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:01,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:01,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:01,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:01,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:01,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:01,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-15 18:07:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:01,362 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 18:07:01,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:01,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964782458] [2023-12-15 18:07:01,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964782458] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:01,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:01,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:07:01,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177976697] [2023-12-15 18:07:01,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:01,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:07:01,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:01,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:07:01,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:07:01,364 INFO L87 Difference]: Start difference. First operand 4585 states and 5674 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 18:07:02,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:02,605 INFO L93 Difference]: Finished difference Result 7675 states and 9422 transitions. [2023-12-15 18:07:02,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 18:07:02,605 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 18:07:02,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:02,615 INFO L225 Difference]: With dead ends: 7675 [2023-12-15 18:07:02,616 INFO L226 Difference]: Without dead ends: 3832 [2023-12-15 18:07:02,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-12-15 18:07:02,625 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 1859 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:02,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 1447 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:07:02,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2023-12-15 18:07:02,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 3428. [2023-12-15 18:07:02,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 2605 states have (on average 1.234548944337812) internal successors, (3216), 2658 states have internal predecessors, (3216), 400 states have call successors, (400), 329 states have call predecessors, (400), 421 states have return successors, (549), 443 states have call predecessors, (549), 399 states have call successors, (549) [2023-12-15 18:07:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 4165 transitions. [2023-12-15 18:07:02,809 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 4165 transitions. Word has length 86 [2023-12-15 18:07:02,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:02,810 INFO L495 AbstractCegarLoop]: Abstraction has 3428 states and 4165 transitions. [2023-12-15 18:07:02,810 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 18:07:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 4165 transitions. [2023-12-15 18:07:02,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-15 18:07:02,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:02,814 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 18:07:02,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:07:02,814 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:02,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:02,814 INFO L85 PathProgramCache]: Analyzing trace with hash 617363904, now seen corresponding path program 1 times [2023-12-15 18:07:02,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:02,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836365664] [2023-12-15 18:07:02,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:02,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:07:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:07:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:07:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:07:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:07:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-15 18:07:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-15 18:07:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-15 18:07:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:07:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:07:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-15 18:07:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-15 18:07:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-15 18:07:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:02,945 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 18:07:02,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:02,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836365664] [2023-12-15 18:07:02,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836365664] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:07:02,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892294453] [2023-12-15 18:07:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:02,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:07:02,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:07:02,947 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 18:07:02,969 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 18:07:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:03,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 18:07:03,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:07:03,125 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 18:07:03,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:07:03,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892294453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:03,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:07:03,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-12-15 18:07:03,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156973723] [2023-12-15 18:07:03,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:03,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:03,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:03,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:03,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-15 18:07:03,129 INFO L87 Difference]: Start difference. First operand 3428 states and 4165 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 18:07:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:03,316 INFO L93 Difference]: Finished difference Result 5141 states and 6242 transitions. [2023-12-15 18:07:03,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:03,316 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 18:07:03,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:03,321 INFO L225 Difference]: With dead ends: 5141 [2023-12-15 18:07:03,321 INFO L226 Difference]: Without dead ends: 1981 [2023-12-15 18:07:03,327 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 18:07:03,328 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 32 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:03,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2414 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 18:07:03,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2023-12-15 18:07:03,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1859. [2023-12-15 18:07:03,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1482 states have (on average 1.257085020242915) internal successors, (1863), 1498 states have internal predecessors, (1863), 189 states have call successors, (189), 143 states have call predecessors, (189), 186 states have return successors, (256), 218 states have call predecessors, (256), 188 states have call successors, (256) [2023-12-15 18:07:03,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2308 transitions. [2023-12-15 18:07:03,417 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2308 transitions. Word has length 131 [2023-12-15 18:07:03,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:03,417 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2308 transitions. [2023-12-15 18:07:03,417 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 18:07:03,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2308 transitions. [2023-12-15 18:07:03,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:07:03,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:03,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:03,426 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 18:07:03,625 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 18:07:03,626 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:03,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:03,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2106673559, now seen corresponding path program 1 times [2023-12-15 18:07:03,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:03,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696689209] [2023-12-15 18:07:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:03,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:03,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:03,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:07:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:03,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:07:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:03,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:07:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:03,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:07:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:03,747 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 18:07:03,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:03,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696689209] [2023-12-15 18:07:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696689209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:03,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:03,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:03,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443079196] [2023-12-15 18:07:03,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:03,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:03,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:03,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:03,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:03,749 INFO L87 Difference]: Start difference. First operand 1859 states and 2308 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:05,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:05,299 INFO L93 Difference]: Finished difference Result 2236 states and 2939 transitions. [2023-12-15 18:07:05,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:07:05,300 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:07:05,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:05,304 INFO L225 Difference]: With dead ends: 2236 [2023-12-15 18:07:05,304 INFO L226 Difference]: Without dead ends: 1991 [2023-12-15 18:07:05,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-12-15 18:07:05,305 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 954 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1737 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:05,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 1144 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1737 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 18:07:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2023-12-15 18:07:05,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1861. [2023-12-15 18:07:05,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1484 states have (on average 1.256064690026954) internal successors, (1864), 1500 states have internal predecessors, (1864), 189 states have call successors, (189), 143 states have call predecessors, (189), 186 states have return successors, (256), 218 states have call predecessors, (256), 188 states have call successors, (256) [2023-12-15 18:07:05,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2309 transitions. [2023-12-15 18:07:05,436 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2309 transitions. Word has length 121 [2023-12-15 18:07:05,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:05,436 INFO L495 AbstractCegarLoop]: Abstraction has 1861 states and 2309 transitions. [2023-12-15 18:07:05,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:05,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2309 transitions. [2023-12-15 18:07:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:07:05,438 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:05,438 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] [2023-12-15 18:07:05,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:07:05,438 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:05,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:05,438 INFO L85 PathProgramCache]: Analyzing trace with hash -549569189, now seen corresponding path program 1 times [2023-12-15 18:07:05,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:05,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35101256] [2023-12-15 18:07:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:05,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:07:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:05,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:07:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:05,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:07:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:05,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:07:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:05,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:05,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:05,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35101256] [2023-12-15 18:07:05,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35101256] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:05,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:05,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:07:05,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966984834] [2023-12-15 18:07:05,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:05,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:07:05,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:05,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:07:05,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:07:05,551 INFO L87 Difference]: Start difference. First operand 1861 states and 2309 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 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 18:07:07,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:07,007 INFO L93 Difference]: Finished difference Result 2540 states and 3427 transitions. [2023-12-15 18:07:07,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:07:07,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 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 121 [2023-12-15 18:07:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:07,012 INFO L225 Difference]: With dead ends: 2540 [2023-12-15 18:07:07,012 INFO L226 Difference]: Without dead ends: 2298 [2023-12-15 18:07:07,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:07:07,014 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 1241 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:07,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 958 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 18:07:07,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2023-12-15 18:07:07,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2115. [2023-12-15 18:07:07,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2115 states, 1714 states have (on average 1.3057176196032672) internal successors, (2238), 1731 states have internal predecessors, (2238), 206 states have call successors, (206), 149 states have call predecessors, (206), 193 states have return successors, (276), 235 states have call predecessors, (276), 205 states have call successors, (276) [2023-12-15 18:07:07,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 2720 transitions. [2023-12-15 18:07:07,197 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 2720 transitions. Word has length 121 [2023-12-15 18:07:07,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:07,197 INFO L495 AbstractCegarLoop]: Abstraction has 2115 states and 2720 transitions. [2023-12-15 18:07:07,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 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 18:07:07,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 2720 transitions. [2023-12-15 18:07:07,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:07:07,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:07,199 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] [2023-12-15 18:07:07,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:07:07,200 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:07,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash -4280677, now seen corresponding path program 1 times [2023-12-15 18:07:07,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:07,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154783223] [2023-12-15 18:07:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:07,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:07,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:07:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:07,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:07:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:07,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:07:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:07,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:07:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:07,321 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 18:07:07,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:07,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154783223] [2023-12-15 18:07:07,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154783223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:07,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:07,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:07,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241506205] [2023-12-15 18:07:07,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:07,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:07,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:07,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:07,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:07,323 INFO L87 Difference]: Start difference. First operand 2115 states and 2720 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:09,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:09,450 INFO L93 Difference]: Finished difference Result 3151 states and 4423 transitions. [2023-12-15 18:07:09,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:07:09,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:07:09,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:09,456 INFO L225 Difference]: With dead ends: 3151 [2023-12-15 18:07:09,456 INFO L226 Difference]: Without dead ends: 2655 [2023-12-15 18:07:09,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:07:09,458 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1262 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 2883 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 2970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:09,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 1687 Invalid, 2970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2883 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 18:07:09,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2023-12-15 18:07:09,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2350. [2023-12-15 18:07:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2350 states, 1925 states have (on average 1.3371428571428572) internal successors, (2574), 1943 states have internal predecessors, (2574), 223 states have call successors, (223), 155 states have call predecessors, (223), 200 states have return successors, (295), 253 states have call predecessors, (295), 222 states have call successors, (295) [2023-12-15 18:07:09,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3092 transitions. [2023-12-15 18:07:09,613 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3092 transitions. Word has length 121 [2023-12-15 18:07:09,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:09,614 INFO L495 AbstractCegarLoop]: Abstraction has 2350 states and 3092 transitions. [2023-12-15 18:07:09,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3092 transitions. [2023-12-15 18:07:09,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:07:09,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:09,616 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] [2023-12-15 18:07:09,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:07:09,616 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:09,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:09,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2037674723, now seen corresponding path program 1 times [2023-12-15 18:07:09,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:09,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144936446] [2023-12-15 18:07:09,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:09,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:07:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:07:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:07:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:07:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:09,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:09,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:09,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144936446] [2023-12-15 18:07:09,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144936446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:09,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:09,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:09,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001046021] [2023-12-15 18:07:09,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:09,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:09,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:09,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:09,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:09,766 INFO L87 Difference]: Start difference. First operand 2350 states and 3092 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:12,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:12,067 INFO L93 Difference]: Finished difference Result 4047 states and 5875 transitions. [2023-12-15 18:07:12,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:07:12,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:07:12,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:12,078 INFO L225 Difference]: With dead ends: 4047 [2023-12-15 18:07:12,078 INFO L226 Difference]: Without dead ends: 3316 [2023-12-15 18:07:12,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:07:12,082 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 1346 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:12,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 1187 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2428 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-15 18:07:12,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2023-12-15 18:07:12,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 2821. [2023-12-15 18:07:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2348 states have (on average 1.382879045996593) internal successors, (3247), 2368 states have internal predecessors, (3247), 257 states have call successors, (257), 167 states have call predecessors, (257), 214 states have return successors, (337), 289 states have call predecessors, (337), 256 states have call successors, (337) [2023-12-15 18:07:12,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 3841 transitions. [2023-12-15 18:07:12,312 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 3841 transitions. Word has length 121 [2023-12-15 18:07:12,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:12,312 INFO L495 AbstractCegarLoop]: Abstraction has 2821 states and 3841 transitions. [2023-12-15 18:07:12,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 3841 transitions. [2023-12-15 18:07:12,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:07:12,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:12,314 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] [2023-12-15 18:07:12,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:07:12,314 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:12,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:12,315 INFO L85 PathProgramCache]: Analyzing trace with hash 390583899, now seen corresponding path program 1 times [2023-12-15 18:07:12,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:12,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955161684] [2023-12-15 18:07:12,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:12,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:12,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:12,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:07:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:12,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:07:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:12,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:07:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:12,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:07:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:12,440 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 18:07:12,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:12,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955161684] [2023-12-15 18:07:12,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955161684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:12,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:12,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:12,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194800974] [2023-12-15 18:07:12,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:12,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:12,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:12,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:12,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:12,441 INFO L87 Difference]: Start difference. First operand 2821 states and 3841 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:13,725 INFO L93 Difference]: Finished difference Result 4504 states and 6609 transitions. [2023-12-15 18:07:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:13,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:07:13,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:13,733 INFO L225 Difference]: With dead ends: 4504 [2023-12-15 18:07:13,733 INFO L226 Difference]: Without dead ends: 3302 [2023-12-15 18:07:13,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:07:13,737 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 970 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:13,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 975 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:07:13,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2023-12-15 18:07:13,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 2821. [2023-12-15 18:07:13,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2348 states have (on average 1.3807495741056217) internal successors, (3242), 2368 states have internal predecessors, (3242), 257 states have call successors, (257), 167 states have call predecessors, (257), 214 states have return successors, (337), 289 states have call predecessors, (337), 256 states have call successors, (337) [2023-12-15 18:07:13,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 3836 transitions. [2023-12-15 18:07:13,976 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 3836 transitions. Word has length 121 [2023-12-15 18:07:13,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:13,976 INFO L495 AbstractCegarLoop]: Abstraction has 2821 states and 3836 transitions. [2023-12-15 18:07:13,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:13,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 3836 transitions. [2023-12-15 18:07:13,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:07:13,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:13,979 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] [2023-12-15 18:07:13,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:07:13,979 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:13,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:13,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2006886631, now seen corresponding path program 1 times [2023-12-15 18:07:13,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:13,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403746658] [2023-12-15 18:07:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:13,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:14,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:14,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:07:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:14,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:07:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:14,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:07:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:14,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:07:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:14,098 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 18:07:14,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:14,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403746658] [2023-12-15 18:07:14,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403746658] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:14,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:14,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:14,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534992618] [2023-12-15 18:07:14,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:14,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:14,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:14,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:14,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:14,101 INFO L87 Difference]: Start difference. First operand 2821 states and 3836 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:15,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:15,326 INFO L93 Difference]: Finished difference Result 4498 states and 6582 transitions. [2023-12-15 18:07:15,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:15,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:07:15,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:15,333 INFO L225 Difference]: With dead ends: 4498 [2023-12-15 18:07:15,333 INFO L226 Difference]: Without dead ends: 3296 [2023-12-15 18:07:15,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:07:15,337 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 968 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:15,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 975 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:07:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3296 states. [2023-12-15 18:07:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3296 to 2821. [2023-12-15 18:07:15,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2348 states have (on average 1.3786201022146507) internal successors, (3237), 2368 states have internal predecessors, (3237), 257 states have call successors, (257), 167 states have call predecessors, (257), 214 states have return successors, (337), 289 states have call predecessors, (337), 256 states have call successors, (337) [2023-12-15 18:07:15,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 3831 transitions. [2023-12-15 18:07:15,577 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 3831 transitions. Word has length 121 [2023-12-15 18:07:15,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:15,577 INFO L495 AbstractCegarLoop]: Abstraction has 2821 states and 3831 transitions. [2023-12-15 18:07:15,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:15,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 3831 transitions. [2023-12-15 18:07:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:07:15,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:15,580 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] [2023-12-15 18:07:15,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:07:15,580 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:15,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:15,580 INFO L85 PathProgramCache]: Analyzing trace with hash -975845733, now seen corresponding path program 1 times [2023-12-15 18:07:15,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:15,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037287211] [2023-12-15 18:07:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:15,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:07:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:07:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:07:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:07:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:15,708 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 18:07:15,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:15,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037287211] [2023-12-15 18:07:15,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037287211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:15,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:15,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:15,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871033766] [2023-12-15 18:07:15,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:15,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:15,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:15,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:15,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:15,709 INFO L87 Difference]: Start difference. First operand 2821 states and 3831 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:17,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:17,926 INFO L93 Difference]: Finished difference Result 5751 states and 8572 transitions. [2023-12-15 18:07:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:07:17,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:07:17,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:17,934 INFO L225 Difference]: With dead ends: 5751 [2023-12-15 18:07:17,934 INFO L226 Difference]: Without dead ends: 4549 [2023-12-15 18:07:17,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:07:17,937 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1246 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:17,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 1685 Invalid, 2892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 18:07:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2023-12-15 18:07:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 3779. [2023-12-15 18:07:18,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3779 states, 3210 states have (on average 1.4320872274143301) internal successors, (4597), 3234 states have internal predecessors, (4597), 325 states have call successors, (325), 191 states have call predecessors, (325), 242 states have return successors, (427), 361 states have call predecessors, (427), 324 states have call successors, (427) [2023-12-15 18:07:18,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3779 states to 3779 states and 5349 transitions. [2023-12-15 18:07:18,186 INFO L78 Accepts]: Start accepts. Automaton has 3779 states and 5349 transitions. Word has length 121 [2023-12-15 18:07:18,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:18,186 INFO L495 AbstractCegarLoop]: Abstraction has 3779 states and 5349 transitions. [2023-12-15 18:07:18,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3779 states and 5349 transitions. [2023-12-15 18:07:18,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:07:18,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:18,189 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] [2023-12-15 18:07:18,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:07:18,189 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:18,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:18,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1412718297, now seen corresponding path program 1 times [2023-12-15 18:07:18,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:18,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340296797] [2023-12-15 18:07:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:18,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:07:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:07:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:07:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:07:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:18,310 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 18:07:18,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:18,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340296797] [2023-12-15 18:07:18,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340296797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:18,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:18,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:18,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78517161] [2023-12-15 18:07:18,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:18,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:18,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:18,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:18,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:18,311 INFO L87 Difference]: Start difference. First operand 3779 states and 5349 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:19,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:19,444 INFO L93 Difference]: Finished difference Result 6718 states and 10133 transitions. [2023-12-15 18:07:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:07:19,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:07:19,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:19,455 INFO L225 Difference]: With dead ends: 6718 [2023-12-15 18:07:19,455 INFO L226 Difference]: Without dead ends: 4558 [2023-12-15 18:07:19,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:07:19,462 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 1122 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:19,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 812 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:07:19,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4558 states. [2023-12-15 18:07:19,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4558 to 3779. [2023-12-15 18:07:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3779 states, 3210 states have (on average 1.429283489096573) internal successors, (4588), 3234 states have internal predecessors, (4588), 325 states have call successors, (325), 191 states have call predecessors, (325), 242 states have return successors, (427), 361 states have call predecessors, (427), 324 states have call successors, (427) [2023-12-15 18:07:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3779 states to 3779 states and 5340 transitions. [2023-12-15 18:07:19,741 INFO L78 Accepts]: Start accepts. Automaton has 3779 states and 5340 transitions. Word has length 121 [2023-12-15 18:07:19,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:19,741 INFO L495 AbstractCegarLoop]: Abstraction has 3779 states and 5340 transitions. [2023-12-15 18:07:19,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:19,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3779 states and 5340 transitions. [2023-12-15 18:07:19,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:07:19,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:19,744 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] [2023-12-15 18:07:19,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 18:07:19,744 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:19,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:19,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1281177893, now seen corresponding path program 1 times [2023-12-15 18:07:19,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:19,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027442254] [2023-12-15 18:07:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:19,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:07:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:07:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:07:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:07:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:19,862 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 18:07:19,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:19,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027442254] [2023-12-15 18:07:19,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027442254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:19,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:19,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:19,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808266724] [2023-12-15 18:07:19,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:19,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:19,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:19,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:19,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:19,864 INFO L87 Difference]: Start difference. First operand 3779 states and 5340 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:22,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:22,524 INFO L93 Difference]: Finished difference Result 9185 states and 14036 transitions. [2023-12-15 18:07:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:07:22,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:07:22,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:22,546 INFO L225 Difference]: With dead ends: 9185 [2023-12-15 18:07:22,546 INFO L226 Difference]: Without dead ends: 7025 [2023-12-15 18:07:22,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:07:22,553 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1238 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 2765 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:22,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 1685 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2765 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-15 18:07:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7025 states. [2023-12-15 18:07:22,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7025 to 5705. [2023-12-15 18:07:22,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5705 states, 4944 states have (on average 1.4781553398058251) internal successors, (7308), 4976 states have internal predecessors, (7308), 461 states have call successors, (461), 239 states have call predecessors, (461), 298 states have return successors, (625), 505 states have call predecessors, (625), 460 states have call successors, (625) [2023-12-15 18:07:22,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 8394 transitions. [2023-12-15 18:07:22,930 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 8394 transitions. Word has length 121 [2023-12-15 18:07:22,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:22,930 INFO L495 AbstractCegarLoop]: Abstraction has 5705 states and 8394 transitions. [2023-12-15 18:07:22,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:22,930 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 8394 transitions. [2023-12-15 18:07:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:07:22,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:22,934 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] [2023-12-15 18:07:22,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 18:07:22,935 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:22,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:22,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1957058201, now seen corresponding path program 1 times [2023-12-15 18:07:22,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:22,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695528201] [2023-12-15 18:07:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:22,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:22,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:07:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:07:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:07:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:07:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:23,048 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 18:07:23,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:23,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695528201] [2023-12-15 18:07:23,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695528201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:23,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:23,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:23,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96763839] [2023-12-15 18:07:23,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:23,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:23,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:23,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:23,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:23,049 INFO L87 Difference]: Start difference. First operand 5705 states and 8394 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:25,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:25,849 INFO L93 Difference]: Finished difference Result 17797 states and 27834 transitions. [2023-12-15 18:07:25,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:07:25,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:07:25,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:25,916 INFO L225 Difference]: With dead ends: 17797 [2023-12-15 18:07:25,916 INFO L226 Difference]: Without dead ends: 13711 [2023-12-15 18:07:25,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:07:25,929 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1311 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 3232 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:25,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 1678 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3232 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 18:07:25,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13711 states. [2023-12-15 18:07:26,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13711 to 9538. [2023-12-15 18:07:26,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9538 states, 8409 states have (on average 1.5162326079200856) internal successors, (12750), 8457 states have internal predecessors, (12750), 717 states have call successors, (717), 335 states have call predecessors, (717), 410 states have return successors, (1059), 777 states have call predecessors, (1059), 716 states have call successors, (1059) [2023-12-15 18:07:26,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9538 states to 9538 states and 14526 transitions. [2023-12-15 18:07:26,479 INFO L78 Accepts]: Start accepts. Automaton has 9538 states and 14526 transitions. Word has length 121 [2023-12-15 18:07:26,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:26,479 INFO L495 AbstractCegarLoop]: Abstraction has 9538 states and 14526 transitions. [2023-12-15 18:07:26,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:26,480 INFO L276 IsEmpty]: Start isEmpty. Operand 9538 states and 14526 transitions. [2023-12-15 18:07:26,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:07:26,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:26,485 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] [2023-12-15 18:07:26,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 18:07:26,485 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:26,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:26,486 INFO L85 PathProgramCache]: Analyzing trace with hash -986523877, now seen corresponding path program 1 times [2023-12-15 18:07:26,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:26,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782225362] [2023-12-15 18:07:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:26,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:07:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:07:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:07:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:07:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:26,605 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 18:07:26,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:26,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782225362] [2023-12-15 18:07:26,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782225362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:26,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:26,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:26,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347061683] [2023-12-15 18:07:26,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:26,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:26,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:26,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:26,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:26,606 INFO L87 Difference]: Start difference. First operand 9538 states and 14526 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:29,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:29,405 INFO L93 Difference]: Finished difference Result 32844 states and 52160 transitions. [2023-12-15 18:07:29,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:07:29,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:07:29,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:29,465 INFO L225 Difference]: With dead ends: 32844 [2023-12-15 18:07:29,465 INFO L226 Difference]: Without dead ends: 24925 [2023-12-15 18:07:29,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:07:29,486 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1563 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:29,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 1235 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 18:07:29,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24925 states. [2023-12-15 18:07:30,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24925 to 17043. [2023-12-15 18:07:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17043 states, 15194 states have (on average 1.5406081347900487) internal successors, (23408), 15274 states have internal predecessors, (23408), 1213 states have call successors, (1213), 527 states have call predecessors, (1213), 634 states have return successors, (2073), 1305 states have call predecessors, (2073), 1212 states have call successors, (2073) [2023-12-15 18:07:30,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17043 states to 17043 states and 26694 transitions. [2023-12-15 18:07:30,492 INFO L78 Accepts]: Start accepts. Automaton has 17043 states and 26694 transitions. Word has length 121 [2023-12-15 18:07:30,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:30,492 INFO L495 AbstractCegarLoop]: Abstraction has 17043 states and 26694 transitions. [2023-12-15 18:07:30,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:30,493 INFO L276 IsEmpty]: Start isEmpty. Operand 17043 states and 26694 transitions. [2023-12-15 18:07:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:07:30,501 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:30,501 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] [2023-12-15 18:07:30,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 18:07:30,501 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:30,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:30,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1689468505, now seen corresponding path program 1 times [2023-12-15 18:07:30,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:30,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851624600] [2023-12-15 18:07:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:30,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:30,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:30,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:07:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:30,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:07:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:30,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:07:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:30,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:07:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:30,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:30,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:30,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851624600] [2023-12-15 18:07:30,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851624600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:30,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:30,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:30,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121188336] [2023-12-15 18:07:30,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:30,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:30,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:30,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:30,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:30,621 INFO L87 Difference]: Start difference. First operand 17043 states and 26694 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:33,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:33,998 INFO L93 Difference]: Finished difference Result 60921 states and 98322 transitions. [2023-12-15 18:07:33,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:07:33,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 121 [2023-12-15 18:07:33,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:34,118 INFO L225 Difference]: With dead ends: 60921 [2023-12-15 18:07:34,118 INFO L226 Difference]: Without dead ends: 45497 [2023-12-15 18:07:34,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:07:34,170 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1426 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 2697 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1460 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 2789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:34,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1460 Valid, 1678 Invalid, 2789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2697 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 18:07:34,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45497 states. [2023-12-15 18:07:35,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45497 to 32277. [2023-12-15 18:07:35,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32277 states, 29020 states have (on average 1.5565816678152997) internal successors, (45172), 29164 states have internal predecessors, (45172), 2173 states have call successors, (2173), 911 states have call predecessors, (2173), 1082 states have return successors, (4555), 2329 states have call predecessors, (4555), 2172 states have call successors, (4555) [2023-12-15 18:07:36,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32277 states to 32277 states and 51900 transitions. [2023-12-15 18:07:36,065 INFO L78 Accepts]: Start accepts. Automaton has 32277 states and 51900 transitions. Word has length 121 [2023-12-15 18:07:36,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:36,065 INFO L495 AbstractCegarLoop]: Abstraction has 32277 states and 51900 transitions. [2023-12-15 18:07:36,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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 18:07:36,066 INFO L276 IsEmpty]: Start isEmpty. Operand 32277 states and 51900 transitions. [2023-12-15 18:07:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-15 18:07:36,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:36,080 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] [2023-12-15 18:07:36,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 18:07:36,081 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:36,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:36,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1660968215, now seen corresponding path program 1 times [2023-12-15 18:07:36,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:36,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257883236] [2023-12-15 18:07:36,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:36,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-15 18:07:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-15 18:07:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-15 18:07:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-15 18:07:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:36,196 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 18:07:36,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:36,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257883236] [2023-12-15 18:07:36,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257883236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:36,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:36,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:36,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249786004] [2023-12-15 18:07:36,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:36,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:36,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:36,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:36,197 INFO L87 Difference]: Start difference. First operand 32277 states and 51900 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 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) Received shutdown request... [2023-12-15 18:07:40,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:07:40,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:07:40,260 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1263 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:40,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 1396 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2307 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 18:07:40,261 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:07:40,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-15 18:07:40,262 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (32277states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (100970 states constructed, input type IntersectNwa). [2023-12-15 18:07:40,263 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:07:40,266 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:40,268 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:07:40,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:07:40 BoogieIcfgContainer [2023-12-15 18:07:40,269 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:07:40,270 INFO L158 Benchmark]: Toolchain (without parser) took 56485.93ms. Allocated memory was 253.8MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 198.4MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 18:07:40,270 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 210.8MB. Free memory is still 158.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:07:40,271 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.50ms. Allocated memory is still 253.8MB. Free memory was 198.0MB in the beginning and 174.1MB in the end (delta: 23.9MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 18:07:40,271 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.92ms. Allocated memory is still 253.8MB. Free memory was 174.1MB in the beginning and 170.1MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 18:07:40,271 INFO L158 Benchmark]: Boogie Preprocessor took 75.29ms. Allocated memory is still 253.8MB. Free memory was 170.1MB in the beginning and 165.1MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 18:07:40,273 INFO L158 Benchmark]: RCFGBuilder took 949.46ms. Allocated memory is still 253.8MB. Free memory was 165.1MB in the beginning and 169.1MB in the end (delta: -3.9MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. [2023-12-15 18:07:40,273 INFO L158 Benchmark]: TraceAbstraction took 54958.52ms. Allocated memory was 253.8MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 168.5MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 18:07:40,275 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 210.8MB. Free memory is still 158.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 426.50ms. Allocated memory is still 253.8MB. Free memory was 198.0MB in the beginning and 174.1MB in the end (delta: 23.9MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 70.92ms. Allocated memory is still 253.8MB. Free memory was 174.1MB in the beginning and 170.1MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 75.29ms. Allocated memory is still 253.8MB. Free memory was 170.1MB in the beginning and 165.1MB in the end (delta: 4.9MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 949.46ms. Allocated memory is still 253.8MB. Free memory was 165.1MB in the beginning and 169.1MB in the end (delta: -3.9MB). Peak memory consumption was 13.7MB. Max. memory is 8.0GB. * TraceAbstraction took 54958.52ms. Allocated memory was 253.8MB in the beginning and 2.2GB in the end (delta: 1.9GB). Free memory was 168.5MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 1.5GB. 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 (32277states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (100970 states constructed, input type IntersectNwa). - 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 (32277states) and FLOYD_HOARE automaton (currently 15 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (100970 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 347 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 54.9s, OverallIterations: 28, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 42.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34817 SdHoareTripleChecker+Valid, 27.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34176 mSDsluCounter, 38086 SdHoareTripleChecker+Invalid, 22.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29458 mSDsCounter, 4144 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46375 IncrementalHoareTripleChecker+Invalid, 50519 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4144 mSolverCounterUnsat, 8628 mSDtfsCounter, 46375 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1180 GetRequests, 767 SyntacticMatches, 0 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1444 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32277occurred in iteration=27, InterpolantAutomatonStates: 371, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.5s AutomataMinimizationTime, 27 MinimizatonAttempts, 34635 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 2806 NumberOfCodeBlocks, 2806 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 2843 ConstructedInterpolants, 0 QuantifiedInterpolants, 7373 SizeOfPredicates, 1 NumberOfNonLiveVariables, 872 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 31 InterpolantComputations, 27 PerfectInterpolantSequences, 181/191 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