/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:49:10,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:49:10,888 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:49:10,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:49:10,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:49:10,920 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:49:10,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:49:10,921 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:49:10,921 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:49:10,925 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:49:10,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:49:10,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:49:10,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:49:10,927 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:49:10,927 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:49:10,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:49:10,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:49:10,927 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:49:10,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:49:10,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:49:10,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:49:10,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:49:10,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:49:10,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:49:10,930 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:49:10,930 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:49:10,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:49:10,930 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:49:10,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:49:10,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:49:10,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:49:10,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:49:10,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:49:10,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:49:10,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:49:10,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:49:10,933 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:49:10,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:49:10,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:49:10,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:49:10,934 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:49:10,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:49:10,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:49:10,934 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:49:11,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:49:11,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:49:11,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:49:11,253 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:49:11,254 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:49:11,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2023-12-20 14:49:12,365 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:49:12,546 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:49:12,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2023-12-20 14:49:12,570 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d42129b82/b822cebaae0d4ffb9f7e264ba92a43bd/FLAG6e7bdfd1a [2023-12-20 14:49:12,586 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d42129b82/b822cebaae0d4ffb9f7e264ba92a43bd [2023-12-20 14:49:12,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:49:12,590 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:49:12,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:49:12,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:49:12,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:49:12,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:49:12" (1/1) ... [2023-12-20 14:49:12,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0e37b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:12, skipping insertion in model container [2023-12-20 14:49:12,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:49:12" (1/1) ... [2023-12-20 14:49:12,648 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:49:12,768 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[914,927] [2023-12-20 14:49:12,809 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[7115,7128] [2023-12-20 14:49:12,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:49:12,914 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:49:12,923 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[914,927] [2023-12-20 14:49:12,970 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[7115,7128] [2023-12-20 14:49:13,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:49:13,020 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:49:13,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:13 WrapperNode [2023-12-20 14:49:13,021 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:49:13,022 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:49:13,022 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:49:13,022 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:49:13,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:13" (1/1) ... [2023-12-20 14:49:13,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:13" (1/1) ... [2023-12-20 14:49:13,081 INFO L138 Inliner]: procedures = 73, calls = 87, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 948 [2023-12-20 14:49:13,082 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:49:13,082 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:49:13,082 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:49:13,082 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:49:13,090 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:13" (1/1) ... [2023-12-20 14:49:13,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:13" (1/1) ... [2023-12-20 14:49:13,097 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:13" (1/1) ... [2023-12-20 14:49:13,112 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 14:49:13,113 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:13" (1/1) ... [2023-12-20 14:49:13,113 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:13" (1/1) ... [2023-12-20 14:49:13,147 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:13" (1/1) ... [2023-12-20 14:49:13,167 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:13" (1/1) ... [2023-12-20 14:49:13,170 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:13" (1/1) ... [2023-12-20 14:49:13,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:13" (1/1) ... [2023-12-20 14:49:13,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:49:13,178 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:49:13,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:49:13,178 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:49:13,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:13" (1/1) ... [2023-12-20 14:49:13,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:49:13,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:49:13,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 14:49:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:49:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 14:49:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 14:49:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-20 14:49:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-20 14:49:13,263 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-20 14:49:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-20 14:49:13,263 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-20 14:49:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-20 14:49:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-20 14:49:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-20 14:49:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-20 14:49:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-20 14:49:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-20 14:49:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-20 14:49:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-20 14:49:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-20 14:49:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-20 14:49:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-20 14:49:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-20 14:49:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-20 14:49:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-20 14:49:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-20 14:49:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:49:13,265 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-20 14:49:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-20 14:49:13,266 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-20 14:49:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-20 14:49:13,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:49:13,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:49:13,267 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-20 14:49:13,267 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-20 14:49:13,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 14:49:13,372 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:49:13,375 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:49:14,040 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:49:14,093 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:49:14,093 INFO L309 CfgBuilder]: Removed 17 assume(true) statements. [2023-12-20 14:49:14,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:49:14 BoogieIcfgContainer [2023-12-20 14:49:14,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:49:14,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:49:14,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:49:14,097 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:49:14,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:49:12" (1/3) ... [2023-12-20 14:49:14,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51024b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:49:14, skipping insertion in model container [2023-12-20 14:49:14,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:49:13" (2/3) ... [2023-12-20 14:49:14,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51024b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:49:14, skipping insertion in model container [2023-12-20 14:49:14,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:49:14" (3/3) ... [2023-12-20 14:49:14,099 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2023-12-20 14:49:14,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:49:14,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:49:14,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:49:14,167 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;@1f65e35a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:49:14,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:49:14,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 393 states, 338 states have (on average 1.7071005917159763) internal successors, (577), 344 states have internal predecessors, (577), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-20 14:49:14,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:49:14,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:14,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:14,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:14,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:14,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1051938744, now seen corresponding path program 1 times [2023-12-20 14:49:14,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:14,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43167597] [2023-12-20 14:49:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:14,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:14,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:14,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:14,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:14,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:14,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:14,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:14,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:14,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:14,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43167597] [2023-12-20 14:49:14,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43167597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:14,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:14,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:49:14,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358117138] [2023-12-20 14:49:14,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:14,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:49:14,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:14,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:49:14,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:49:14,557 INFO L87 Difference]: Start difference. First operand has 393 states, 338 states have (on average 1.7071005917159763) internal successors, (577), 344 states have internal predecessors, (577), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:49:15,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:15,651 INFO L93 Difference]: Finished difference Result 888 states and 1461 transitions. [2023-12-20 14:49:15,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:49:15,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-20 14:49:15,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:15,664 INFO L225 Difference]: With dead ends: 888 [2023-12-20 14:49:15,664 INFO L226 Difference]: Without dead ends: 513 [2023-12-20 14:49:15,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:49:15,670 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1025 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:15,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 1568 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 14:49:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-12-20 14:49:15,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 476. [2023-12-20 14:49:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 403 states have (on average 1.5707196029776676) internal successors, (633), 409 states have internal predecessors, (633), 49 states have call successors, (49), 21 states have call predecessors, (49), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2023-12-20 14:49:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 734 transitions. [2023-12-20 14:49:15,723 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 734 transitions. Word has length 58 [2023-12-20 14:49:15,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:15,724 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 734 transitions. [2023-12-20 14:49:15,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:49:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 734 transitions. [2023-12-20 14:49:15,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:49:15,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:15,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:15,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:49:15,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:15,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:15,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2143100791, now seen corresponding path program 1 times [2023-12-20 14:49:15,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:15,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339514575] [2023-12-20 14:49:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:15,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:15,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:15,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:15,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:15,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:15,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:15,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:15,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:15,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339514575] [2023-12-20 14:49:15,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339514575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:15,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:15,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:49:15,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726341723] [2023-12-20 14:49:15,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:15,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:49:15,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:15,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:49:15,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:49:15,904 INFO L87 Difference]: Start difference. First operand 476 states and 734 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:49:16,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:16,869 INFO L93 Difference]: Finished difference Result 796 states and 1184 transitions. [2023-12-20 14:49:16,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 14:49:16,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-20 14:49:16,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:16,873 INFO L225 Difference]: With dead ends: 796 [2023-12-20 14:49:16,873 INFO L226 Difference]: Without dead ends: 634 [2023-12-20 14:49:16,874 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 [2023-12-20 14:49:16,875 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 1511 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:16,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 1511 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:49:16,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-12-20 14:49:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 564. [2023-12-20 14:49:16,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 471 states have (on average 1.5477707006369428) internal successors, (729), 479 states have internal predecessors, (729), 60 states have call successors, (60), 28 states have call predecessors, (60), 31 states have return successors, (71), 60 states have call predecessors, (71), 58 states have call successors, (71) [2023-12-20 14:49:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 860 transitions. [2023-12-20 14:49:16,904 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 860 transitions. Word has length 58 [2023-12-20 14:49:16,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:16,904 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 860 transitions. [2023-12-20 14:49:16,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:49:16,904 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 860 transitions. [2023-12-20 14:49:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:49:16,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:16,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:16,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:49:16,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:16,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash -214828089, now seen corresponding path program 1 times [2023-12-20 14:49:16,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:16,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433791155] [2023-12-20 14:49:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:16,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:16,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:16,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:16,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:16,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:16,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:16,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:16,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:16,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433791155] [2023-12-20 14:49:16,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433791155] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:16,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:16,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:49:16,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209840229] [2023-12-20 14:49:16,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:17,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:49:17,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:17,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:49:17,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:49:17,001 INFO L87 Difference]: Start difference. First operand 564 states and 860 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:49:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:18,058 INFO L93 Difference]: Finished difference Result 840 states and 1249 transitions. [2023-12-20 14:49:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:49:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-20 14:49:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:18,061 INFO L225 Difference]: With dead ends: 840 [2023-12-20 14:49:18,061 INFO L226 Difference]: Without dead ends: 596 [2023-12-20 14:49:18,062 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 [2023-12-20 14:49:18,063 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 541 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:18,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 2143 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 14:49:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-12-20 14:49:18,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 568. [2023-12-20 14:49:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 474 states have (on average 1.540084388185654) internal successors, (730), 482 states have internal predecessors, (730), 60 states have call successors, (60), 28 states have call predecessors, (60), 32 states have return successors, (72), 61 states have call predecessors, (72), 58 states have call successors, (72) [2023-12-20 14:49:18,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 862 transitions. [2023-12-20 14:49:18,088 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 862 transitions. Word has length 58 [2023-12-20 14:49:18,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:18,088 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 862 transitions. [2023-12-20 14:49:18,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:49:18,088 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 862 transitions. [2023-12-20 14:49:18,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:49:18,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:18,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:18,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:49:18,090 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:18,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:18,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1836155909, now seen corresponding path program 1 times [2023-12-20 14:49:18,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:18,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274837766] [2023-12-20 14:49:18,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:18,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:18,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:18,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:18,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:18,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:18,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:18,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:18,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:18,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274837766] [2023-12-20 14:49:18,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274837766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:18,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:18,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:49:18,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635423466] [2023-12-20 14:49:18,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:18,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:49:18,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:18,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:49:18,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:49:18,186 INFO L87 Difference]: Start difference. First operand 568 states and 862 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:49:19,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:19,038 INFO L93 Difference]: Finished difference Result 858 states and 1267 transitions. [2023-12-20 14:49:19,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 14:49:19,038 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-20 14:49:19,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:19,043 INFO L225 Difference]: With dead ends: 858 [2023-12-20 14:49:19,043 INFO L226 Difference]: Without dead ends: 610 [2023-12-20 14:49:19,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:49:19,048 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 807 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:19,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 1900 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1830 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:49:19,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2023-12-20 14:49:19,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 580. [2023-12-20 14:49:19,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 483 states have (on average 1.5300207039337475) internal successors, (739), 491 states have internal predecessors, (739), 60 states have call successors, (60), 28 states have call predecessors, (60), 35 states have return successors, (75), 64 states have call predecessors, (75), 58 states have call successors, (75) [2023-12-20 14:49:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 874 transitions. [2023-12-20 14:49:19,079 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 874 transitions. Word has length 58 [2023-12-20 14:49:19,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:19,083 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 874 transitions. [2023-12-20 14:49:19,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:49:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 874 transitions. [2023-12-20 14:49:19,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:49:19,085 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:19,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:19,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:49:19,085 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:19,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:19,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1898195523, now seen corresponding path program 1 times [2023-12-20 14:49:19,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:19,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137847770] [2023-12-20 14:49:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:19,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:19,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:19,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:19,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:19,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:19,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:19,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:19,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:19,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137847770] [2023-12-20 14:49:19,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137847770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:19,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:19,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:49:19,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870879085] [2023-12-20 14:49:19,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:19,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:49:19,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:19,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:49:19,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:49:19,275 INFO L87 Difference]: Start difference. First operand 580 states and 874 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:49:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:20,162 INFO L93 Difference]: Finished difference Result 936 states and 1349 transitions. [2023-12-20 14:49:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 14:49:20,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-20 14:49:20,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:20,165 INFO L225 Difference]: With dead ends: 936 [2023-12-20 14:49:20,165 INFO L226 Difference]: Without dead ends: 678 [2023-12-20 14:49:20,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-12-20 14:49:20,166 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 1481 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:20,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1345 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:49:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2023-12-20 14:49:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 590. [2023-12-20 14:49:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 491 states have (on average 1.5213849287169043) internal successors, (747), 499 states have internal predecessors, (747), 61 states have call successors, (61), 29 states have call predecessors, (61), 36 states have return successors, (74), 65 states have call predecessors, (74), 59 states have call successors, (74) [2023-12-20 14:49:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 882 transitions. [2023-12-20 14:49:20,185 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 882 transitions. Word has length 58 [2023-12-20 14:49:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:20,186 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 882 transitions. [2023-12-20 14:49:20,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:49:20,186 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 882 transitions. [2023-12-20 14:49:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:49:20,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:20,187 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] [2023-12-20 14:49:20,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:49:20,187 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:20,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:20,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1974069947, now seen corresponding path program 1 times [2023-12-20 14:49:20,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:20,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941663452] [2023-12-20 14:49:20,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:20,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:20,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:20,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:20,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:20,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:20,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:20,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:20,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:20,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:20,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941663452] [2023-12-20 14:49:20,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941663452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:20,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:20,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:20,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565559321] [2023-12-20 14:49:20,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:20,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:20,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:20,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:20,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:20,250 INFO L87 Difference]: Start difference. First operand 590 states and 882 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:49:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:20,906 INFO L93 Difference]: Finished difference Result 1172 states and 1669 transitions. [2023-12-20 14:49:20,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 14:49:20,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-20 14:49:20,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:20,911 INFO L225 Difference]: With dead ends: 1172 [2023-12-20 14:49:20,911 INFO L226 Difference]: Without dead ends: 905 [2023-12-20 14:49:20,912 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 [2023-12-20 14:49:20,913 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 1173 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:20,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 1296 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:49:20,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-12-20 14:49:20,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 851. [2023-12-20 14:49:20,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 686 states have (on average 1.4650145772594751) internal successors, (1005), 701 states have internal predecessors, (1005), 96 states have call successors, (96), 51 states have call predecessors, (96), 67 states have return successors, (131), 105 states have call predecessors, (131), 94 states have call successors, (131) [2023-12-20 14:49:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1232 transitions. [2023-12-20 14:49:20,952 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1232 transitions. Word has length 58 [2023-12-20 14:49:20,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:20,952 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1232 transitions. [2023-12-20 14:49:20,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 14:49:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1232 transitions. [2023-12-20 14:49:20,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 14:49:20,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:20,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:20,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:49:20,954 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:20,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:20,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1929630287, now seen corresponding path program 1 times [2023-12-20 14:49:20,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:20,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713221770] [2023-12-20 14:49:20,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:20,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:20,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:20,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:20,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:20,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:20,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:21,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:21,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713221770] [2023-12-20 14:49:21,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713221770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:21,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:21,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:49:21,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480526641] [2023-12-20 14:49:21,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:21,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:49:21,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:21,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:49:21,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:49:21,005 INFO L87 Difference]: Start difference. First operand 851 states and 1232 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:49:21,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:21,739 INFO L93 Difference]: Finished difference Result 1935 states and 2678 transitions. [2023-12-20 14:49:21,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:49:21,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2023-12-20 14:49:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:21,744 INFO L225 Difference]: With dead ends: 1935 [2023-12-20 14:49:21,744 INFO L226 Difference]: Without dead ends: 1416 [2023-12-20 14:49:21,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:49:21,746 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1474 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:21,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 848 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:49:21,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2023-12-20 14:49:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1262. [2023-12-20 14:49:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 997 states have (on average 1.4092276830491475) internal successors, (1405), 1019 states have internal predecessors, (1405), 145 states have call successors, (145), 93 states have call predecessors, (145), 118 states have return successors, (201), 156 states have call predecessors, (201), 143 states have call successors, (201) [2023-12-20 14:49:21,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1751 transitions. [2023-12-20 14:49:21,846 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1751 transitions. Word has length 59 [2023-12-20 14:49:21,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:21,847 INFO L495 AbstractCegarLoop]: Abstraction has 1262 states and 1751 transitions. [2023-12-20 14:49:21,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:49:21,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1751 transitions. [2023-12-20 14:49:21,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 14:49:21,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:21,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:21,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:49:21,849 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:21,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:21,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1176185545, now seen corresponding path program 1 times [2023-12-20 14:49:21,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:21,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794771904] [2023-12-20 14:49:21,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:21,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:21,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:21,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:21,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:21,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:21,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:21,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:21,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794771904] [2023-12-20 14:49:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794771904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:21,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:21,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:49:21,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684221183] [2023-12-20 14:49:21,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:21,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:49:21,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:21,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:49:21,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:49:21,930 INFO L87 Difference]: Start difference. First operand 1262 states and 1751 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:49:22,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:22,533 INFO L93 Difference]: Finished difference Result 3222 states and 4314 transitions. [2023-12-20 14:49:22,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:49:22,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2023-12-20 14:49:22,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:22,542 INFO L225 Difference]: With dead ends: 3222 [2023-12-20 14:49:22,542 INFO L226 Difference]: Without dead ends: 2262 [2023-12-20 14:49:22,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:49:22,560 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1018 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:22,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1040 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:49:22,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2023-12-20 14:49:22,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2078. [2023-12-20 14:49:22,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 1615 states have (on average 1.3603715170278639) internal successors, (2197), 1643 states have internal predecessors, (2197), 239 states have call successors, (239), 179 states have call predecessors, (239), 222 states have return successors, (339), 262 states have call predecessors, (339), 237 states have call successors, (339) [2023-12-20 14:49:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2775 transitions. [2023-12-20 14:49:22,704 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2775 transitions. Word has length 60 [2023-12-20 14:49:22,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:22,704 INFO L495 AbstractCegarLoop]: Abstraction has 2078 states and 2775 transitions. [2023-12-20 14:49:22,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:49:22,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2775 transitions. [2023-12-20 14:49:22,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:49:22,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:22,706 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] [2023-12-20 14:49:22,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:49:22,706 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:22,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:22,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1632430454, now seen corresponding path program 1 times [2023-12-20 14:49:22,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:22,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322066104] [2023-12-20 14:49:22,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:22,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:22,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:22,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:22,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:22,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:22,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:22,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:22,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:22,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:22,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322066104] [2023-12-20 14:49:22,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322066104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:22,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:22,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:49:22,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063346780] [2023-12-20 14:49:22,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:22,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:49:22,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:22,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:49:22,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:49:22,755 INFO L87 Difference]: Start difference. First operand 2078 states and 2775 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:49:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:23,392 INFO L93 Difference]: Finished difference Result 4742 states and 6179 transitions. [2023-12-20 14:49:23,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:49:23,394 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 [2023-12-20 14:49:23,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:23,405 INFO L225 Difference]: With dead ends: 4742 [2023-12-20 14:49:23,405 INFO L226 Difference]: Without dead ends: 2986 [2023-12-20 14:49:23,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:49:23,425 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 1458 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:23,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 857 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:49:23,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2023-12-20 14:49:23,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2744. [2023-12-20 14:49:23,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2744 states, 2117 states have (on average 1.339159187529523) internal successors, (2835), 2153 states have internal predecessors, (2835), 319 states have call successors, (319), 249 states have call predecessors, (319), 306 states have return successors, (448), 348 states have call predecessors, (448), 317 states have call successors, (448) [2023-12-20 14:49:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 3602 transitions. [2023-12-20 14:49:23,661 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 3602 transitions. Word has length 66 [2023-12-20 14:49:23,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:23,661 INFO L495 AbstractCegarLoop]: Abstraction has 2744 states and 3602 transitions. [2023-12-20 14:49:23,662 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) [2023-12-20 14:49:23,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 3602 transitions. [2023-12-20 14:49:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 14:49:23,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:23,666 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:23,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:49:23,666 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:23,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:23,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1451057087, now seen corresponding path program 1 times [2023-12-20 14:49:23,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:23,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385596382] [2023-12-20 14:49:23,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:23,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:23,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:23,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:23,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:23,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:23,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:23,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:23,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:23,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:23,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:23,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:23,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385596382] [2023-12-20 14:49:23,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385596382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:23,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:23,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:23,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817761334] [2023-12-20 14:49:23,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:23,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:23,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:23,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:23,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:23,732 INFO L87 Difference]: Start difference. First operand 2744 states and 3602 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 14:49:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:24,451 INFO L93 Difference]: Finished difference Result 3464 states and 4479 transitions. [2023-12-20 14:49:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:49:24,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2023-12-20 14:49:24,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:24,462 INFO L225 Difference]: With dead ends: 3464 [2023-12-20 14:49:24,463 INFO L226 Difference]: Without dead ends: 3461 [2023-12-20 14:49:24,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:49:24,464 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 2049 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:24,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2059 Valid, 833 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:49:24,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2023-12-20 14:49:24,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3194. [2023-12-20 14:49:24,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 2458 states have (on average 1.3275020341741253) internal successors, (3263), 2499 states have internal predecessors, (3263), 369 states have call successors, (369), 293 states have call predecessors, (369), 365 states have return successors, (527), 408 states have call predecessors, (527), 368 states have call successors, (527) [2023-12-20 14:49:24,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 4159 transitions. [2023-12-20 14:49:24,599 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 4159 transitions. Word has length 67 [2023-12-20 14:49:24,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:24,600 INFO L495 AbstractCegarLoop]: Abstraction has 3194 states and 4159 transitions. [2023-12-20 14:49:24,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 14:49:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 4159 transitions. [2023-12-20 14:49:24,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 14:49:24,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:24,602 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:24,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:49:24,602 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:24,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:24,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2034394336, now seen corresponding path program 1 times [2023-12-20 14:49:24,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:24,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231964626] [2023-12-20 14:49:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:24,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:24,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:24,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:24,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:24,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:24,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:24,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:24,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:24,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231964626] [2023-12-20 14:49:24,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231964626] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:49:24,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004690516] [2023-12-20 14:49:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:24,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:49:24,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:49:24,718 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:49:24,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 14:49:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:24,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-20 14:49:24,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:49:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:25,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:49:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:25,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004690516] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:49:25,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:49:25,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-12-20 14:49:25,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877916697] [2023-12-20 14:49:25,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:49:25,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:49:25,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:25,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:49:25,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:49:25,086 INFO L87 Difference]: Start difference. First operand 3194 states and 4159 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-20 14:49:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:26,534 INFO L93 Difference]: Finished difference Result 7261 states and 9271 transitions. [2023-12-20 14:49:26,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-20 14:49:26,535 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 68 [2023-12-20 14:49:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:26,560 INFO L225 Difference]: With dead ends: 7261 [2023-12-20 14:49:26,560 INFO L226 Difference]: Without dead ends: 7258 [2023-12-20 14:49:26,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2023-12-20 14:49:26,564 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1915 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1985 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:26,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1985 Valid, 1917 Invalid, 2494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:49:26,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7258 states. [2023-12-20 14:49:26,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7258 to 4820. [2023-12-20 14:49:26,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4820 states, 3698 states have (on average 1.3182801514332072) internal successors, (4875), 3761 states have internal predecessors, (4875), 553 states have call successors, (553), 451 states have call predecessors, (553), 567 states have return successors, (805), 614 states have call predecessors, (805), 552 states have call successors, (805) [2023-12-20 14:49:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4820 states to 4820 states and 6233 transitions. [2023-12-20 14:49:26,814 INFO L78 Accepts]: Start accepts. Automaton has 4820 states and 6233 transitions. Word has length 68 [2023-12-20 14:49:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:26,814 INFO L495 AbstractCegarLoop]: Abstraction has 4820 states and 6233 transitions. [2023-12-20 14:49:26,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-20 14:49:26,815 INFO L276 IsEmpty]: Start isEmpty. Operand 4820 states and 6233 transitions. [2023-12-20 14:49:26,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 14:49:26,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:26,816 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:26,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 14:49:27,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-20 14:49:27,022 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:27,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:27,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1844962687, now seen corresponding path program 2 times [2023-12-20 14:49:27,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:27,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675702875] [2023-12-20 14:49:27,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:27,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:27,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:27,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675702875] [2023-12-20 14:49:27,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675702875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:27,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:27,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:49:27,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384183519] [2023-12-20 14:49:27,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:27,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:49:27,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:27,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:49:27,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:49:27,073 INFO L87 Difference]: Start difference. First operand 4820 states and 6233 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 14:49:27,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:27,742 INFO L93 Difference]: Finished difference Result 7276 states and 9380 transitions. [2023-12-20 14:49:27,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:49:27,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2023-12-20 14:49:27,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:27,753 INFO L225 Difference]: With dead ends: 7276 [2023-12-20 14:49:27,753 INFO L226 Difference]: Without dead ends: 3573 [2023-12-20 14:49:27,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:49:27,759 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1090 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:27,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 1174 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:49:27,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2023-12-20 14:49:27,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 3344. [2023-12-20 14:49:27,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 2578 states have (on average 1.3060512024825446) internal successors, (3367), 2619 states have internal predecessors, (3367), 385 states have call successors, (385), 307 states have call predecessors, (385), 379 states have return successors, (531), 424 states have call predecessors, (531), 384 states have call successors, (531) [2023-12-20 14:49:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 4283 transitions. [2023-12-20 14:49:27,891 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 4283 transitions. Word has length 71 [2023-12-20 14:49:27,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:27,891 INFO L495 AbstractCegarLoop]: Abstraction has 3344 states and 4283 transitions. [2023-12-20 14:49:27,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 14:49:27,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 4283 transitions. [2023-12-20 14:49:27,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 14:49:27,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:27,893 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:27,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:49:27,893 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:27,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:27,893 INFO L85 PathProgramCache]: Analyzing trace with hash 568509296, now seen corresponding path program 1 times [2023-12-20 14:49:27,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:27,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728022252] [2023-12-20 14:49:27,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:27,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:49:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:49:27,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:27,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728022252] [2023-12-20 14:49:27,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728022252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:27,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:27,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:49:27,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689706231] [2023-12-20 14:49:27,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:27,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:49:27,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:27,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:49:27,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:49:27,988 INFO L87 Difference]: Start difference. First operand 3344 states and 4283 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:49:29,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:29,243 INFO L93 Difference]: Finished difference Result 9642 states and 12126 transitions. [2023-12-20 14:49:29,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 14:49:29,249 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2023-12-20 14:49:29,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:29,268 INFO L225 Difference]: With dead ends: 9642 [2023-12-20 14:49:29,268 INFO L226 Difference]: Without dead ends: 5405 [2023-12-20 14:49:29,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-12-20 14:49:29,275 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1240 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:29,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 1662 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:49:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2023-12-20 14:49:29,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 5085. [2023-12-20 14:49:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5085 states, 3862 states have (on average 1.2729155877783531) internal successors, (4916), 3946 states have internal predecessors, (4916), 589 states have call successors, (589), 481 states have call predecessors, (589), 632 states have return successors, (913), 664 states have call predecessors, (913), 588 states have call successors, (913) [2023-12-20 14:49:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5085 states to 5085 states and 6418 transitions. [2023-12-20 14:49:29,550 INFO L78 Accepts]: Start accepts. Automaton has 5085 states and 6418 transitions. Word has length 76 [2023-12-20 14:49:29,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:29,550 INFO L495 AbstractCegarLoop]: Abstraction has 5085 states and 6418 transitions. [2023-12-20 14:49:29,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:49:29,550 INFO L276 IsEmpty]: Start isEmpty. Operand 5085 states and 6418 transitions. [2023-12-20 14:49:29,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:49:29,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:29,553 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:29,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:49:29,555 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:29,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:29,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1786321226, now seen corresponding path program 1 times [2023-12-20 14:49:29,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:29,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258310779] [2023-12-20 14:49:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:29,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:29,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:29,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:29,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:29,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:29,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:29,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:29,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 14:49:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:49:29,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:29,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258310779] [2023-12-20 14:49:29,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258310779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:29,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:29,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:49:29,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782836736] [2023-12-20 14:49:29,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:29,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:49:29,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:29,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:49:29,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:49:29,645 INFO L87 Difference]: Start difference. First operand 5085 states and 6418 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:49:30,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:30,775 INFO L93 Difference]: Finished difference Result 8756 states and 10926 transitions. [2023-12-20 14:49:30,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 14:49:30,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2023-12-20 14:49:30,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:30,788 INFO L225 Difference]: With dead ends: 8756 [2023-12-20 14:49:30,788 INFO L226 Difference]: Without dead ends: 4576 [2023-12-20 14:49:30,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2023-12-20 14:49:30,793 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1728 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:30,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 1669 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1644 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 14:49:30,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2023-12-20 14:49:30,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4242. [2023-12-20 14:49:30,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4242 states, 3232 states have (on average 1.2673267326732673) internal successors, (4096), 3298 states have internal predecessors, (4096), 490 states have call successors, (490), 396 states have call predecessors, (490), 518 states have return successors, (691), 554 states have call predecessors, (691), 489 states have call successors, (691) [2023-12-20 14:49:30,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4242 states to 4242 states and 5277 transitions. [2023-12-20 14:49:30,970 INFO L78 Accepts]: Start accepts. Automaton has 4242 states and 5277 transitions. Word has length 86 [2023-12-20 14:49:30,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:30,970 INFO L495 AbstractCegarLoop]: Abstraction has 4242 states and 5277 transitions. [2023-12-20 14:49:30,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 14:49:30,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4242 states and 5277 transitions. [2023-12-20 14:49:30,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-20 14:49:30,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:30,976 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:30,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:49:30,976 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:30,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:30,977 INFO L85 PathProgramCache]: Analyzing trace with hash -814915802, now seen corresponding path program 1 times [2023-12-20 14:49:30,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:30,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258624070] [2023-12-20 14:49:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:30,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:49:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-20 14:49:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-12-20 14:49:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 14:49:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-20 14:49:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-12-20 14:49:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 14:49:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-20 14:49:31,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:31,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258624070] [2023-12-20 14:49:31,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258624070] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:49:31,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757990503] [2023-12-20 14:49:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:31,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:49:31,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:49:31,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:49:31,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 14:49:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 14:49:31,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:49:31,292 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 14:49:31,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:49:31,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757990503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:31,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:49:31,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2023-12-20 14:49:31,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601400416] [2023-12-20 14:49:31,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:31,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:49:31,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:31,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:49:31,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:49:31,295 INFO L87 Difference]: Start difference. First operand 4242 states and 5277 transitions. Second operand has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 14:49:31,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:31,470 INFO L93 Difference]: Finished difference Result 6214 states and 7706 transitions. [2023-12-20 14:49:31,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:49:31,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2023-12-20 14:49:31,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:31,476 INFO L225 Difference]: With dead ends: 6214 [2023-12-20 14:49:31,476 INFO L226 Difference]: Without dead ends: 2298 [2023-12-20 14:49:31,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-20 14:49:31,482 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 32 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:31,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2774 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:49:31,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2023-12-20 14:49:31,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2173. [2023-12-20 14:49:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 1740 states have (on average 1.285632183908046) internal successors, (2237), 1755 states have internal predecessors, (2237), 214 states have call successors, (214), 162 states have call predecessors, (214), 217 states have return successors, (298), 256 states have call predecessors, (298), 213 states have call successors, (298) [2023-12-20 14:49:31,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 2749 transitions. [2023-12-20 14:49:31,567 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 2749 transitions. Word has length 131 [2023-12-20 14:49:31,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:31,568 INFO L495 AbstractCegarLoop]: Abstraction has 2173 states and 2749 transitions. [2023-12-20 14:49:31,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 14:49:31,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 2749 transitions. [2023-12-20 14:49:31,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-20 14:49:31,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:31,571 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:31,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 14:49:31,776 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 [2023-12-20 14:49:31,776 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:31,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:31,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1140442716, now seen corresponding path program 1 times [2023-12-20 14:49:31,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:31,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773749900] [2023-12-20 14:49:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:31,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:49:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 14:49:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-20 14:49:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 14:49:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 14:49:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-20 14:49:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-20 14:49:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-12-20 14:49:31,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:31,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773749900] [2023-12-20 14:49:31,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773749900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:31,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:31,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:49:31,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530080840] [2023-12-20 14:49:31,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:31,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:49:31,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:31,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:49:31,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:49:31,850 INFO L87 Difference]: Start difference. First operand 2173 states and 2749 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-20 14:49:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:32,442 INFO L93 Difference]: Finished difference Result 2238 states and 2817 transitions. [2023-12-20 14:49:32,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:49:32,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 133 [2023-12-20 14:49:32,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:32,450 INFO L225 Difference]: With dead ends: 2238 [2023-12-20 14:49:32,450 INFO L226 Difference]: Without dead ends: 1836 [2023-12-20 14:49:32,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:49:32,452 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 896 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:32,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 995 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:49:32,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2023-12-20 14:49:32,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1774. [2023-12-20 14:49:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1437 states have (on average 1.3041057759220598) internal successors, (1874), 1449 states have internal predecessors, (1874), 168 states have call successors, (168), 122 states have call predecessors, (168), 167 states have return successors, (234), 203 states have call predecessors, (234), 167 states have call successors, (234) [2023-12-20 14:49:32,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2276 transitions. [2023-12-20 14:49:32,540 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2276 transitions. Word has length 133 [2023-12-20 14:49:32,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:32,540 INFO L495 AbstractCegarLoop]: Abstraction has 1774 states and 2276 transitions. [2023-12-20 14:49:32,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-20 14:49:32,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2276 transitions. [2023-12-20 14:49:32,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 14:49:32,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:32,543 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:32,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:49:32,543 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:32,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:32,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1455665359, now seen corresponding path program 1 times [2023-12-20 14:49:32,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:32,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108698047] [2023-12-20 14:49:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:32,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 14:49:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:49:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 14:49:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 14:49:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 14:49:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-20 14:49:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 14:49:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:32,641 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-20 14:49:32,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:32,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108698047] [2023-12-20 14:49:32,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108698047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:32,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:32,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:32,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522980362] [2023-12-20 14:49:32,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:32,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:32,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:32,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:32,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:32,643 INFO L87 Difference]: Start difference. First operand 1774 states and 2276 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-20 14:49:33,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:33,353 INFO L93 Difference]: Finished difference Result 3121 states and 3945 transitions. [2023-12-20 14:49:33,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 14:49:33,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 145 [2023-12-20 14:49:33,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:33,358 INFO L225 Difference]: With dead ends: 3121 [2023-12-20 14:49:33,358 INFO L226 Difference]: Without dead ends: 1881 [2023-12-20 14:49:33,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:49:33,360 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 568 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:33,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1636 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:49:33,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2023-12-20 14:49:33,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1699. [2023-12-20 14:49:33,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1384 states have (on average 1.3041907514450868) internal successors, (1805), 1397 states have internal predecessors, (1805), 159 states have call successors, (159), 117 states have call predecessors, (159), 154 states have return successors, (218), 185 states have call predecessors, (218), 158 states have call successors, (218) [2023-12-20 14:49:33,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2182 transitions. [2023-12-20 14:49:33,454 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2182 transitions. Word has length 145 [2023-12-20 14:49:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:33,454 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2182 transitions. [2023-12-20 14:49:33,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-20 14:49:33,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2182 transitions. [2023-12-20 14:49:33,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-20 14:49:33,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:33,457 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:33,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:49:33,457 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:33,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:33,458 INFO L85 PathProgramCache]: Analyzing trace with hash 210967997, now seen corresponding path program 1 times [2023-12-20 14:49:33,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:33,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401545261] [2023-12-20 14:49:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:33,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:49:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:49:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:49:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:49:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 14:49:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 14:49:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-12-20 14:49:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 14:49:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:49:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:49:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-20 14:49:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 14:49:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-20 14:49:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,617 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-20 14:49:33,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:33,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401545261] [2023-12-20 14:49:33,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401545261] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:49:33,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088428825] [2023-12-20 14:49:33,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:33,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:49:33,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:49:33,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:49:33,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 14:49:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:33,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 14:49:33,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:49:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-20 14:49:33,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:49:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-20 14:49:34,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088428825] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:49:34,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:49:34,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-12-20 14:49:34,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117270312] [2023-12-20 14:49:34,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:49:34,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 14:49:34,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:34,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 14:49:34,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-20 14:49:34,005 INFO L87 Difference]: Start difference. First operand 1699 states and 2182 transitions. Second operand has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2023-12-20 14:49:34,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:34,979 INFO L93 Difference]: Finished difference Result 3506 states and 4470 transitions. [2023-12-20 14:49:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 14:49:34,980 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 147 [2023-12-20 14:49:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:34,985 INFO L225 Difference]: With dead ends: 3506 [2023-12-20 14:49:34,985 INFO L226 Difference]: Without dead ends: 2204 [2023-12-20 14:49:34,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2023-12-20 14:49:34,987 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1905 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:34,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1935 Valid, 1732 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:49:34,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2023-12-20 14:49:35,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 2060. [2023-12-20 14:49:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1633 states have (on average 1.273116962645438) internal successors, (2079), 1654 states have internal predecessors, (2079), 213 states have call successors, (213), 167 states have call predecessors, (213), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2023-12-20 14:49:35,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2624 transitions. [2023-12-20 14:49:35,095 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2624 transitions. Word has length 147 [2023-12-20 14:49:35,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:35,095 INFO L495 AbstractCegarLoop]: Abstraction has 2060 states and 2624 transitions. [2023-12-20 14:49:35,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.0) internal successors, (224), 12 states have internal predecessors, (224), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2023-12-20 14:49:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2624 transitions. [2023-12-20 14:49:35,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:49:35,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:35,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:35,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 14:49:35,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 14:49:35,303 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:35,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1894679752, now seen corresponding path program 1 times [2023-12-20 14:49:35,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:35,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128784282] [2023-12-20 14:49:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:35,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:35,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:35,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:49:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:35,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:49:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:35,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:49:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:35,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:49:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:35,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:35,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128784282] [2023-12-20 14:49:35,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128784282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:35,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:35,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:49:35,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658610185] [2023-12-20 14:49:35,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:35,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:49:35,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:35,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:49:35,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:49:35,422 INFO L87 Difference]: Start difference. First operand 2060 states and 2624 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:36,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:36,845 INFO L93 Difference]: Finished difference Result 2462 states and 3293 transitions. [2023-12-20 14:49:36,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:49:36,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:49:36,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:36,849 INFO L225 Difference]: With dead ends: 2462 [2023-12-20 14:49:36,849 INFO L226 Difference]: Without dead ends: 2170 [2023-12-20 14:49:36,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:49:36,850 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 925 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:36,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 744 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:49:36,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2170 states. [2023-12-20 14:49:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2170 to 2060. [2023-12-20 14:49:37,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1633 states have (on average 1.2725045927740355) internal successors, (2078), 1654 states have internal predecessors, (2078), 213 states have call successors, (213), 167 states have call predecessors, (213), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2023-12-20 14:49:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2623 transitions. [2023-12-20 14:49:37,006 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2623 transitions. Word has length 141 [2023-12-20 14:49:37,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:37,007 INFO L495 AbstractCegarLoop]: Abstraction has 2060 states and 2623 transitions. [2023-12-20 14:49:37,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:37,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2623 transitions. [2023-12-20 14:49:37,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:49:37,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:37,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:37,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:49:37,012 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:37,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:37,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1349807178, now seen corresponding path program 1 times [2023-12-20 14:49:37,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:37,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480839243] [2023-12-20 14:49:37,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:37,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:37,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:37,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:49:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:37,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:49:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:37,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:49:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:37,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:49:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:37,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:37,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:37,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480839243] [2023-12-20 14:49:37,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480839243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:37,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:37,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:49:37,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606242215] [2023-12-20 14:49:37,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:37,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:49:37,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:37,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:49:37,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:49:37,164 INFO L87 Difference]: Start difference. First operand 2060 states and 2623 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:39,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:39,550 INFO L93 Difference]: Finished difference Result 2863 states and 3961 transitions. [2023-12-20 14:49:39,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:49:39,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:49:39,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:39,557 INFO L225 Difference]: With dead ends: 2863 [2023-12-20 14:49:39,557 INFO L226 Difference]: Without dead ends: 2579 [2023-12-20 14:49:39,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:49:39,559 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 1458 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:39,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1094 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 14:49:39,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2023-12-20 14:49:39,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2360. [2023-12-20 14:49:39,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 1907 states have (on average 1.3256423702149973) internal successors, (2528), 1929 states have internal predecessors, (2528), 232 states have call successors, (232), 173 states have call predecessors, (232), 219 states have return successors, (354), 258 states have call predecessors, (354), 231 states have call successors, (354) [2023-12-20 14:49:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 3114 transitions. [2023-12-20 14:49:39,759 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 3114 transitions. Word has length 141 [2023-12-20 14:49:39,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:39,760 INFO L495 AbstractCegarLoop]: Abstraction has 2360 states and 3114 transitions. [2023-12-20 14:49:39,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:39,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 3114 transitions. [2023-12-20 14:49:39,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:49:39,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:39,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:39,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:49:39,763 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:39,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:39,763 INFO L85 PathProgramCache]: Analyzing trace with hash -950615946, now seen corresponding path program 1 times [2023-12-20 14:49:39,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:39,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082751968] [2023-12-20 14:49:39,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:39,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:39,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:49:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:39,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:49:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:39,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:49:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:39,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:49:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:39,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:39,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082751968] [2023-12-20 14:49:39,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082751968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:39,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:39,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:39,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592298166] [2023-12-20 14:49:39,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:39,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:39,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:39,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:39,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:39,955 INFO L87 Difference]: Start difference. First operand 2360 states and 3114 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:43,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:43,171 INFO L93 Difference]: Finished difference Result 3588 states and 5159 transitions. [2023-12-20 14:49:43,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:49:43,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:49:43,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:43,178 INFO L225 Difference]: With dead ends: 3588 [2023-12-20 14:49:43,178 INFO L226 Difference]: Without dead ends: 3004 [2023-12-20 14:49:43,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:49:43,180 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 1485 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 3434 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 3525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:43,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1952 Invalid, 3525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3434 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 14:49:43,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2023-12-20 14:49:43,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 2637. [2023-12-20 14:49:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2637 states, 2158 states have (on average 1.3586654309545876) internal successors, (2932), 2181 states have internal predecessors, (2932), 251 states have call successors, (251), 179 states have call predecessors, (251), 226 states have return successors, (375), 278 states have call predecessors, (375), 250 states have call successors, (375) [2023-12-20 14:49:43,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 3558 transitions. [2023-12-20 14:49:43,401 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 3558 transitions. Word has length 141 [2023-12-20 14:49:43,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:43,401 INFO L495 AbstractCegarLoop]: Abstraction has 2637 states and 3558 transitions. [2023-12-20 14:49:43,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:43,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 3558 transitions. [2023-12-20 14:49:43,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:49:43,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:43,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:43,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:49:43,404 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:43,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash -462568840, now seen corresponding path program 1 times [2023-12-20 14:49:43,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:43,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741205598] [2023-12-20 14:49:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:43,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:43,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:43,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:49:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:43,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:49:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:43,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:49:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:43,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:49:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:43,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:43,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741205598] [2023-12-20 14:49:43,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741205598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:43,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:43,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:43,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950980640] [2023-12-20 14:49:43,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:43,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:43,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:43,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:43,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:43,588 INFO L87 Difference]: Start difference. First operand 2637 states and 3558 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:46,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:46,847 INFO L93 Difference]: Finished difference Result 4650 states and 6903 transitions. [2023-12-20 14:49:46,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:49:46,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:49:46,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:46,860 INFO L225 Difference]: With dead ends: 4650 [2023-12-20 14:49:46,860 INFO L226 Difference]: Without dead ends: 3789 [2023-12-20 14:49:46,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:49:46,865 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1483 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 3430 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:46,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1950 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3430 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 14:49:46,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3789 states. [2023-12-20 14:49:47,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3789 to 3192. [2023-12-20 14:49:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2661 states have (on average 1.4058624577226606) internal successors, (3741), 2686 states have internal predecessors, (3741), 289 states have call successors, (289), 191 states have call predecessors, (289), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2023-12-20 14:49:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4451 transitions. [2023-12-20 14:49:47,096 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4451 transitions. Word has length 141 [2023-12-20 14:49:47,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:47,097 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 4451 transitions. [2023-12-20 14:49:47,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4451 transitions. [2023-12-20 14:49:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:49:47,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:47,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:47,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:49:47,100 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:47,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:47,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1555204042, now seen corresponding path program 1 times [2023-12-20 14:49:47,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:47,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417159690] [2023-12-20 14:49:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:47,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:47,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:47,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:49:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:49:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:47,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:49:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:47,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:49:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:47,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:47,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417159690] [2023-12-20 14:49:47,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417159690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:47,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:47,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:47,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329030692] [2023-12-20 14:49:47,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:47,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:47,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:47,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:47,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:47,249 INFO L87 Difference]: Start difference. First operand 3192 states and 4451 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:48,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:48,953 INFO L93 Difference]: Finished difference Result 5195 states and 7789 transitions. [2023-12-20 14:49:48,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:49:48,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:49:48,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:48,961 INFO L225 Difference]: With dead ends: 5195 [2023-12-20 14:49:48,962 INFO L226 Difference]: Without dead ends: 3779 [2023-12-20 14:49:48,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:49:48,966 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1195 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 1792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:48,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 1111 Invalid, 1792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 14:49:48,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2023-12-20 14:49:49,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 3192. [2023-12-20 14:49:49,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2661 states have (on average 1.4039834648628335) internal successors, (3736), 2686 states have internal predecessors, (3736), 289 states have call successors, (289), 191 states have call predecessors, (289), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2023-12-20 14:49:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4446 transitions. [2023-12-20 14:49:49,213 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4446 transitions. Word has length 141 [2023-12-20 14:49:49,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:49,214 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 4446 transitions. [2023-12-20 14:49:49,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4446 transitions. [2023-12-20 14:49:49,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:49:49,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:49,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:49,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:49:49,217 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:49,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:49,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1457590968, now seen corresponding path program 1 times [2023-12-20 14:49:49,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:49,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726395629] [2023-12-20 14:49:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:49,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:49,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:49,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:49:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:49,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:49:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:49,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:49:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:49,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:49:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:49,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:49,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726395629] [2023-12-20 14:49:49,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726395629] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:49,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:49,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:49,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044944704] [2023-12-20 14:49:49,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:49,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:49,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:49,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:49,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:49,376 INFO L87 Difference]: Start difference. First operand 3192 states and 4446 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:51,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:51,083 INFO L93 Difference]: Finished difference Result 5189 states and 7763 transitions. [2023-12-20 14:49:51,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:49:51,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:49:51,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:51,091 INFO L225 Difference]: With dead ends: 5189 [2023-12-20 14:49:51,091 INFO L226 Difference]: Without dead ends: 3773 [2023-12-20 14:49:51,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:49:51,095 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1119 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 1890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:51,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1112 Invalid, 1890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 14:49:51,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2023-12-20 14:49:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3192. [2023-12-20 14:49:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2661 states have (on average 1.4021044720030065) internal successors, (3731), 2686 states have internal predecessors, (3731), 289 states have call successors, (289), 191 states have call predecessors, (289), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2023-12-20 14:49:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4441 transitions. [2023-12-20 14:49:51,353 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4441 transitions. Word has length 141 [2023-12-20 14:49:51,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:51,353 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 4441 transitions. [2023-12-20 14:49:51,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:51,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4441 transitions. [2023-12-20 14:49:51,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:49:51,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:51,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:51,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:49:51,359 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:51,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:51,359 INFO L85 PathProgramCache]: Analyzing trace with hash -384884746, now seen corresponding path program 1 times [2023-12-20 14:49:51,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:51,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780301881] [2023-12-20 14:49:51,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:51,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:51,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:51,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:49:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:51,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:49:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:49:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:51,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:49:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:51,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:51,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:51,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780301881] [2023-12-20 14:49:51,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780301881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:51,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:51,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:51,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952930987] [2023-12-20 14:49:51,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:51,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:51,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:51,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:51,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:51,521 INFO L87 Difference]: Start difference. First operand 3192 states and 4441 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:53,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:53,337 INFO L93 Difference]: Finished difference Result 5182 states and 7735 transitions. [2023-12-20 14:49:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:49:53,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:49:53,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:53,346 INFO L225 Difference]: With dead ends: 5182 [2023-12-20 14:49:53,346 INFO L226 Difference]: Without dead ends: 3766 [2023-12-20 14:49:53,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:49:53,350 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1122 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:53,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1112 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1774 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 14:49:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2023-12-20 14:49:53,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3192. [2023-12-20 14:49:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2661 states have (on average 1.4002254791431792) internal successors, (3726), 2686 states have internal predecessors, (3726), 289 states have call successors, (289), 191 states have call predecessors, (289), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2023-12-20 14:49:53,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4436 transitions. [2023-12-20 14:49:53,593 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4436 transitions. Word has length 141 [2023-12-20 14:49:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:53,593 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 4436 transitions. [2023-12-20 14:49:53,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4436 transitions. [2023-12-20 14:49:53,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:49:53,597 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:53,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:53,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:49:53,597 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:53,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2106887432, now seen corresponding path program 1 times [2023-12-20 14:49:53,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:53,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83202791] [2023-12-20 14:49:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:53,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:53,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:53,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:49:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:49:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:53,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:49:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:49:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:53,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:53,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83202791] [2023-12-20 14:49:53,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83202791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:53,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:53,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:49:53,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453415879] [2023-12-20 14:49:53,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:53,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:49:53,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:53,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:49:53,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:49:53,739 INFO L87 Difference]: Start difference. First operand 3192 states and 4436 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:55,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:49:55,468 INFO L93 Difference]: Finished difference Result 5170 states and 7697 transitions. [2023-12-20 14:49:55,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:49:55,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:49:55,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:49:55,476 INFO L225 Difference]: With dead ends: 5170 [2023-12-20 14:49:55,476 INFO L226 Difference]: Without dead ends: 3754 [2023-12-20 14:49:55,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:49:55,478 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1119 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:49:55,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1112 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1750 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 14:49:55,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2023-12-20 14:49:55,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3192. [2023-12-20 14:49:55,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2661 states have (on average 1.3983464862833521) internal successors, (3721), 2686 states have internal predecessors, (3721), 289 states have call successors, (289), 191 states have call predecessors, (289), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2023-12-20 14:49:55,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4431 transitions. [2023-12-20 14:49:55,704 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4431 transitions. Word has length 141 [2023-12-20 14:49:55,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:49:55,704 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 4431 transitions. [2023-12-20 14:49:55,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:49:55,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4431 transitions. [2023-12-20 14:49:55,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:49:55,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:49:55,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:49:55,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 14:49:55,708 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:49:55,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:49:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash -177955206, now seen corresponding path program 1 times [2023-12-20 14:49:55,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:49:55,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034712176] [2023-12-20 14:49:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:49:55,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:49:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:55,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:49:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:55,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:49:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:55,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:49:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:55,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:49:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:55,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:49:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:49:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:49:55,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:49:55,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034712176] [2023-12-20 14:49:55,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034712176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:49:55,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:49:55,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:49:55,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511282770] [2023-12-20 14:49:55,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:49:55,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:49:55,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:49:55,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:49:55,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:49:55,887 INFO L87 Difference]: Start difference. First operand 3192 states and 4431 transitions. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:00,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:50:00,302 INFO L93 Difference]: Finished difference Result 7138 states and 10924 transitions. [2023-12-20 14:50:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 14:50:00,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:50:00,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:50:00,312 INFO L225 Difference]: With dead ends: 7138 [2023-12-20 14:50:00,312 INFO L226 Difference]: Without dead ends: 5722 [2023-12-20 14:50:00,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2023-12-20 14:50:00,315 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1831 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 4609 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 4706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 4609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:50:00,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1860 Valid, 2786 Invalid, 4706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 4609 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 14:50:00,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5722 states. [2023-12-20 14:50:00,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5722 to 4343. [2023-12-20 14:50:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4343 states, 3708 states have (on average 1.4487594390507013) internal successors, (5372), 3737 states have internal predecessors, (5372), 365 states have call successors, (365), 215 states have call predecessors, (365), 268 states have return successors, (519), 398 states have call predecessors, (519), 364 states have call successors, (519) [2023-12-20 14:50:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4343 states to 4343 states and 6256 transitions. [2023-12-20 14:50:00,590 INFO L78 Accepts]: Start accepts. Automaton has 4343 states and 6256 transitions. Word has length 141 [2023-12-20 14:50:00,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:50:00,590 INFO L495 AbstractCegarLoop]: Abstraction has 4343 states and 6256 transitions. [2023-12-20 14:50:00,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:00,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4343 states and 6256 transitions. [2023-12-20 14:50:00,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:50:00,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:50:00,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:50:00,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 14:50:00,594 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:50:00,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:50:00,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1146180038, now seen corresponding path program 1 times [2023-12-20 14:50:00,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:50:00,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497857041] [2023-12-20 14:50:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:50:00,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:50:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:00,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:50:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:00,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:50:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:50:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:50:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:00,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:50:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:50:00,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:50:00,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497857041] [2023-12-20 14:50:00,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497857041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:50:00,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:50:00,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:50:00,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312902005] [2023-12-20 14:50:00,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:50:00,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:50:00,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:50:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:50:00,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:50:00,745 INFO L87 Difference]: Start difference. First operand 4343 states and 6256 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:03,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:50:03,963 INFO L93 Difference]: Finished difference Result 10807 states and 16739 transitions. [2023-12-20 14:50:03,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:50:03,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:50:03,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:50:03,983 INFO L225 Difference]: With dead ends: 10807 [2023-12-20 14:50:03,983 INFO L226 Difference]: Without dead ends: 8240 [2023-12-20 14:50:03,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:50:03,989 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1453 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 3287 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 3380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:50:03,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1950 Invalid, 3380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3287 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 14:50:03,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8240 states. [2023-12-20 14:50:04,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8240 to 6622. [2023-12-20 14:50:04,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6622 states, 5779 states have (on average 1.4957605121993425) internal successors, (8644), 5816 states have internal predecessors, (8644), 517 states have call successors, (517), 263 states have call predecessors, (517), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2023-12-20 14:50:04,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6622 states to 6622 states and 9894 transitions. [2023-12-20 14:50:04,363 INFO L78 Accepts]: Start accepts. Automaton has 6622 states and 9894 transitions. Word has length 141 [2023-12-20 14:50:04,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:50:04,363 INFO L495 AbstractCegarLoop]: Abstraction has 6622 states and 9894 transitions. [2023-12-20 14:50:04,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:04,363 INFO L276 IsEmpty]: Start isEmpty. Operand 6622 states and 9894 transitions. [2023-12-20 14:50:04,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:50:04,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:50:04,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:50:04,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 14:50:04,367 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:50:04,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:50:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash 580964924, now seen corresponding path program 1 times [2023-12-20 14:50:04,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:50:04,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926063507] [2023-12-20 14:50:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:50:04,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:50:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:04,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:50:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:04,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:50:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:04,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:50:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:50:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:04,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:50:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:04,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:50:04,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:50:04,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926063507] [2023-12-20 14:50:04,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926063507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:50:04,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:50:04,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:50:04,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502654692] [2023-12-20 14:50:04,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:50:04,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:50:04,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:50:04,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:50:04,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:50:04,507 INFO L87 Difference]: Start difference. First operand 6622 states and 9894 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:07,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:50:07,792 INFO L93 Difference]: Finished difference Result 19016 states and 30019 transitions. [2023-12-20 14:50:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:50:07,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:50:07,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:50:07,822 INFO L225 Difference]: With dead ends: 19016 [2023-12-20 14:50:07,823 INFO L226 Difference]: Without dead ends: 14170 [2023-12-20 14:50:07,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:50:07,836 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1452 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 3274 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:50:07,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 1950 Invalid, 3367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 3274 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 14:50:07,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14170 states. [2023-12-20 14:50:08,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14170 to 11195. [2023-12-20 14:50:08,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11195 states, 9936 states have (on average 1.5307971014492754) internal successors, (15210), 9989 states have internal predecessors, (15210), 821 states have call successors, (821), 359 states have call predecessors, (821), 436 states have return successors, (1215), 878 states have call predecessors, (1215), 820 states have call successors, (1215) [2023-12-20 14:50:08,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11195 states to 11195 states and 17246 transitions. [2023-12-20 14:50:08,431 INFO L78 Accepts]: Start accepts. Automaton has 11195 states and 17246 transitions. Word has length 141 [2023-12-20 14:50:08,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:50:08,431 INFO L495 AbstractCegarLoop]: Abstraction has 11195 states and 17246 transitions. [2023-12-20 14:50:08,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:08,431 INFO L276 IsEmpty]: Start isEmpty. Operand 11195 states and 17246 transitions. [2023-12-20 14:50:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:50:08,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:50:08,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:50:08,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 14:50:08,438 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:50:08,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:50:08,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1052321274, now seen corresponding path program 1 times [2023-12-20 14:50:08,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:50:08,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934254539] [2023-12-20 14:50:08,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:50:08,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:50:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:08,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:50:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:08,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:50:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:50:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:08,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:50:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:08,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:50:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:50:08,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:50:08,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934254539] [2023-12-20 14:50:08,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934254539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:50:08,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:50:08,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:50:08,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322764397] [2023-12-20 14:50:08,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:50:08,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:50:08,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:50:08,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:50:08,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:50:08,581 INFO L87 Difference]: Start difference. First operand 11195 states and 17246 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:12,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:50:12,587 INFO L93 Difference]: Finished difference Result 39659 states and 63527 transitions. [2023-12-20 14:50:12,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:50:12,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:50:12,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:50:12,653 INFO L225 Difference]: With dead ends: 39659 [2023-12-20 14:50:12,653 INFO L226 Difference]: Without dead ends: 30240 [2023-12-20 14:50:12,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:50:12,672 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1625 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 3376 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 3501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:50:12,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 1354 Invalid, 3501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3376 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 14:50:12,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30240 states. [2023-12-20 14:50:13,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30240 to 20308. [2023-12-20 14:50:13,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20308 states, 18249 states have (on average 1.5538385664967944) internal successors, (28356), 18334 states have internal predecessors, (28356), 1397 states have call successors, (1397), 551 states have call predecessors, (1397), 660 states have return successors, (2309), 1486 states have call predecessors, (2309), 1396 states have call successors, (2309) [2023-12-20 14:50:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20308 states to 20308 states and 32062 transitions. [2023-12-20 14:50:13,891 INFO L78 Accepts]: Start accepts. Automaton has 20308 states and 32062 transitions. Word has length 141 [2023-12-20 14:50:13,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:50:13,892 INFO L495 AbstractCegarLoop]: Abstraction has 20308 states and 32062 transitions. [2023-12-20 14:50:13,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:13,892 INFO L276 IsEmpty]: Start isEmpty. Operand 20308 states and 32062 transitions. [2023-12-20 14:50:13,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:50:13,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:50:13,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:50:13,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 14:50:13,904 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:50:13,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:50:13,905 INFO L85 PathProgramCache]: Analyzing trace with hash -595041668, now seen corresponding path program 1 times [2023-12-20 14:50:13,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:50:13,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633472328] [2023-12-20 14:50:13,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:50:13,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:50:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:13,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:50:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:14,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:50:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:14,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:50:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:14,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:50:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:14,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:50:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:14,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:50:14,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:50:14,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633472328] [2023-12-20 14:50:14,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633472328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:50:14,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:50:14,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:50:14,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951852147] [2023-12-20 14:50:14,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:50:14,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:50:14,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:50:14,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:50:14,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:50:14,058 INFO L87 Difference]: Start difference. First operand 20308 states and 32062 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:18,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:50:18,741 INFO L93 Difference]: Finished difference Result 75826 states and 122949 transitions. [2023-12-20 14:50:18,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:50:18,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:50:18,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:50:18,983 INFO L225 Difference]: With dead ends: 75826 [2023-12-20 14:50:18,983 INFO L226 Difference]: Without dead ends: 57294 [2023-12-20 14:50:19,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:50:19,020 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1778 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 3237 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 3237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:50:19,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 1939 Invalid, 3333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 3237 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 14:50:19,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57294 states. [2023-12-20 14:50:21,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57294 to 38213. [2023-12-20 14:50:21,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38213 states, 34586 states have (on average 1.5670502515468687) internal successors, (54198), 34735 states have internal predecessors, (54198), 2517 states have call successors, (2517), 935 states have call predecessors, (2517), 1108 states have return successors, (4951), 2670 states have call predecessors, (4951), 2516 states have call successors, (4951) [2023-12-20 14:50:21,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38213 states to 38213 states and 61666 transitions. [2023-12-20 14:50:21,476 INFO L78 Accepts]: Start accepts. Automaton has 38213 states and 61666 transitions. Word has length 141 [2023-12-20 14:50:21,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:50:21,476 INFO L495 AbstractCegarLoop]: Abstraction has 38213 states and 61666 transitions. [2023-12-20 14:50:21,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:21,476 INFO L276 IsEmpty]: Start isEmpty. Operand 38213 states and 61666 transitions. [2023-12-20 14:50:21,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:50:21,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:50:21,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:50:21,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 14:50:21,493 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:50:21,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:50:21,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1568574906, now seen corresponding path program 1 times [2023-12-20 14:50:21,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:50:21,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568159584] [2023-12-20 14:50:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:50:21,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:50:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:50:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:21,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:50:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:21,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:50:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:21,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:50:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:21,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:50:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:50:21,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:50:21,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568159584] [2023-12-20 14:50:21,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568159584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:50:21,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:50:21,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:50:21,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094139237] [2023-12-20 14:50:21,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:50:21,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:50:21,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:50:21,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:50:21,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:50:21,791 INFO L87 Difference]: Start difference. First operand 38213 states and 61666 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:28,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:50:28,336 INFO L93 Difference]: Finished difference Result 145281 states and 239259 transitions. [2023-12-20 14:50:28,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:50:28,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:50:28,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:50:28,626 INFO L225 Difference]: With dead ends: 145281 [2023-12-20 14:50:28,626 INFO L226 Difference]: Without dead ends: 108844 [2023-12-20 14:50:28,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:50:28,696 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1529 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 3733 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 3828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 3733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:50:28,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 1943 Invalid, 3828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 3733 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 14:50:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108844 states. [2023-12-20 14:50:32,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108844 to 74342. [2023-12-20 14:50:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74342 states, 67643 states have (on average 1.574737962538622) internal successors, (106520), 67920 states have internal predecessors, (106520), 4693 states have call successors, (4693), 1703 states have call predecessors, (4693), 2004 states have return successors, (11629), 4974 states have call predecessors, (11629), 4692 states have call successors, (11629) [2023-12-20 14:50:33,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74342 states to 74342 states and 122842 transitions. [2023-12-20 14:50:33,158 INFO L78 Accepts]: Start accepts. Automaton has 74342 states and 122842 transitions. Word has length 141 [2023-12-20 14:50:33,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:50:33,159 INFO L495 AbstractCegarLoop]: Abstraction has 74342 states and 122842 transitions. [2023-12-20 14:50:33,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:33,160 INFO L276 IsEmpty]: Start isEmpty. Operand 74342 states and 122842 transitions. [2023-12-20 14:50:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:50:33,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:50:33,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:50:33,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-20 14:50:33,199 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:50:33,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:50:33,199 INFO L85 PathProgramCache]: Analyzing trace with hash 529990332, now seen corresponding path program 1 times [2023-12-20 14:50:33,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:50:33,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601043448] [2023-12-20 14:50:33,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:50:33,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:50:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:50:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:33,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:50:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:33,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:50:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:33,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:50:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:33,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:50:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:50:33,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:50:33,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601043448] [2023-12-20 14:50:33,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601043448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:50:33,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:50:33,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:50:33,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716408459] [2023-12-20 14:50:33,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:50:33,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:50:33,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:50:33,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:50:33,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:50:33,359 INFO L87 Difference]: Start difference. First operand 74342 states and 122842 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:42,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:50:42,404 INFO L93 Difference]: Finished difference Result 281822 states and 473485 transitions. [2023-12-20 14:50:42,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:50:42,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:50:42,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:50:43,199 INFO L225 Difference]: With dead ends: 281822 [2023-12-20 14:50:43,199 INFO L226 Difference]: Without dead ends: 209256 [2023-12-20 14:50:43,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:50:43,355 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1674 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 3193 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 3289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 3193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:50:43,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 1943 Invalid, 3289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 3193 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 14:50:43,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209256 states. [2023-12-20 14:50:51,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209256 to 146856. [2023-12-20 14:50:51,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146856 states, 134141 states have (on average 1.5799196368000834) internal successors, (211932), 134674 states have internal predecessors, (211932), 8917 states have call successors, (8917), 3239 states have call predecessors, (8917), 3796 states have return successors, (29231), 9454 states have call predecessors, (29231), 8916 states have call successors, (29231) [2023-12-20 14:50:52,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146856 states to 146856 states and 250080 transitions. [2023-12-20 14:50:52,556 INFO L78 Accepts]: Start accepts. Automaton has 146856 states and 250080 transitions. Word has length 141 [2023-12-20 14:50:52,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:50:52,556 INFO L495 AbstractCegarLoop]: Abstraction has 146856 states and 250080 transitions. [2023-12-20 14:50:52,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:50:52,556 INFO L276 IsEmpty]: Start isEmpty. Operand 146856 states and 250080 transitions. [2023-12-20 14:50:52,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:50:52,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:50:52,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:50:52,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-20 14:50:52,622 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:50:52,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:50:52,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1611870146, now seen corresponding path program 1 times [2023-12-20 14:50:52,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:50:52,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484797196] [2023-12-20 14:50:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:50:52,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:50:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:52,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:50:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:52,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:50:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:52,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:50:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:52,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:50:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:52,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:50:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:50:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:50:52,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:50:52,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484797196] [2023-12-20 14:50:52,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484797196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:50:52,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:50:52,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:50:52,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040321640] [2023-12-20 14:50:52,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:50:52,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:50:52,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:50:52,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:50:52,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:50:52,780 INFO L87 Difference]: Start difference. First operand 146856 states and 250080 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:51:01,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:51:01,927 INFO L93 Difference]: Finished difference Result 334334 states and 587068 transitions. [2023-12-20 14:51:01,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:51:01,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:51:01,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:51:02,925 INFO L225 Difference]: With dead ends: 334334 [2023-12-20 14:51:02,926 INFO L226 Difference]: Without dead ends: 189254 [2023-12-20 14:51:03,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:51:03,197 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1303 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:51:03,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 927 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:51:03,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189254 states. [2023-12-20 14:51:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189254 to 146856. [2023-12-20 14:51:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146856 states, 134141 states have (on average 1.5760953027038713) internal successors, (211419), 134674 states have internal predecessors, (211419), 8917 states have call successors, (8917), 3239 states have call predecessors, (8917), 3796 states have return successors, (29231), 9454 states have call predecessors, (29231), 8916 states have call successors, (29231) [2023-12-20 14:51:12,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146856 states to 146856 states and 249567 transitions. [2023-12-20 14:51:12,407 INFO L78 Accepts]: Start accepts. Automaton has 146856 states and 249567 transitions. Word has length 141 [2023-12-20 14:51:12,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:51:12,408 INFO L495 AbstractCegarLoop]: Abstraction has 146856 states and 249567 transitions. [2023-12-20 14:51:12,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:51:12,408 INFO L276 IsEmpty]: Start isEmpty. Operand 146856 states and 249567 transitions. [2023-12-20 14:51:12,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 14:51:12,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:51:12,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:51:12,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-20 14:51:12,719 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:51:12,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:51:12,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2059815548, now seen corresponding path program 1 times [2023-12-20 14:51:12,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:51:12,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679166362] [2023-12-20 14:51:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:51:12,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:51:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:12,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:51:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:12,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:51:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:12,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:51:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:12,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:51:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:12,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:51:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:51:12,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:51:12,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:51:12,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679166362] [2023-12-20 14:51:12,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679166362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:51:12,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:51:12,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:51:12,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706912224] [2023-12-20 14:51:12,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:51:12,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:51:12,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:51:12,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:51:12,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:51:12,908 INFO L87 Difference]: Start difference. First operand 146856 states and 249567 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 14:51:29,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:51:29,270 INFO L93 Difference]: Finished difference Result 546972 states and 944077 transitions. [2023-12-20 14:51:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:51:29,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 14:51:29,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted.