/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:06:16,899 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:06:16,961 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:06:16,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:06:16,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:06:17,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:06:17,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:06:17,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:06:17,006 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:06:17,010 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:06:17,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:06:17,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:06:17,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:06:17,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:06:17,013 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:06:17,013 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:06:17,013 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:06:17,013 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:06:17,013 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:06:17,014 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:06:17,014 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:06:17,014 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:06:17,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:06:17,015 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:06:17,015 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:06:17,015 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:06:17,015 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:06:17,016 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:06:17,016 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:06:17,016 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:06:17,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:06:17,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:06:17,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:06:17,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:06:17,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:06:17,018 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:06:17,018 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:06:17,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:06:17,018 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:06:17,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:06:17,019 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:06:17,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:06:17,019 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:06:17,019 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:06:17,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:06:17,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:06:17,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:06:17,262 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:06:17,263 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:06:17,264 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2023-12-15 18:06:18,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:06:18,588 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:06:18,589 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2023-12-15 18:06:18,600 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72036c64b/1c606522f3c44cb6ab3630fff73f8216/FLAGfe0d983db [2023-12-15 18:06:18,613 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72036c64b/1c606522f3c44cb6ab3630fff73f8216 [2023-12-15 18:06:18,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:06:18,616 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:06:18,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:06:18,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:06:18,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:06:18,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:06:18" (1/1) ... [2023-12-15 18:06:18,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5232e91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:18, skipping insertion in model container [2023-12-15 18:06:18,623 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:06:18" (1/1) ... [2023-12-15 18:06:18,664 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:06:18,810 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[914,927] [2023-12-15 18:06:18,864 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2023-12-15 18:06:18,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:06:18,950 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:06:18,958 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[914,927] [2023-12-15 18:06:18,974 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2023-12-15 18:06:19,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:06:19,026 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:06:19,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:19 WrapperNode [2023-12-15 18:06:19,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:06:19,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:06:19,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:06:19,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:06:19,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:19" (1/1) ... [2023-12-15 18:06:19,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:19" (1/1) ... [2023-12-15 18:06:19,090 INFO L138 Inliner]: procedures = 61, calls = 70, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 594 [2023-12-15 18:06:19,090 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:06:19,091 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:06:19,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:06:19,091 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:06:19,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:19" (1/1) ... [2023-12-15 18:06:19,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:19" (1/1) ... [2023-12-15 18:06:19,120 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:19" (1/1) ... [2023-12-15 18:06:19,136 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:06:19,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:19" (1/1) ... [2023-12-15 18:06:19,136 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:19" (1/1) ... [2023-12-15 18:06:19,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:19" (1/1) ... [2023-12-15 18:06:19,153 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:19" (1/1) ... [2023-12-15 18:06:19,155 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:19" (1/1) ... [2023-12-15 18:06:19,157 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:19" (1/1) ... [2023-12-15 18:06:19,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:06:19,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:06:19,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:06:19,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:06:19,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:19" (1/1) ... [2023-12-15 18:06:19,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:06:19,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:06:19,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:06:19,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:06:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:06:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-15 18:06:19,215 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-15 18:06:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-15 18:06:19,215 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-15 18:06:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-15 18:06:19,216 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-15 18:06:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-15 18:06:19,220 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-15 18:06:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-15 18:06:19,220 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-15 18:06:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-15 18:06:19,220 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-15 18:06:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-15 18:06:19,221 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-15 18:06:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-15 18:06:19,221 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-15 18:06:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-15 18:06:19,221 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-15 18:06:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-15 18:06:19,221 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-15 18:06:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-15 18:06:19,221 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-15 18:06:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:06:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-15 18:06:19,222 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-15 18:06:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-15 18:06:19,222 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-15 18:06:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:06:19,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:06:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-15 18:06:19,223 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-15 18:06:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-15 18:06:19,223 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-15 18:06:19,316 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:06:19,318 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:06:19,893 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:06:19,953 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:06:19,953 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-15 18:06:19,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:06:19 BoogieIcfgContainer [2023-12-15 18:06:19,954 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:06:19,956 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:06:19,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:06:19,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:06:19,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:06:18" (1/3) ... [2023-12-15 18:06:19,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7416d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:06:19, skipping insertion in model container [2023-12-15 18:06:19,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:06:19" (2/3) ... [2023-12-15 18:06:19,960 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7416d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:06:19, skipping insertion in model container [2023-12-15 18:06:19,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:06:19" (3/3) ... [2023-12-15 18:06:19,961 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2023-12-15 18:06:19,977 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:06:19,977 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 18:06:20,033 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:06:20,040 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;@71a640a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:06:20,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 18:06:20,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 211 states have (on average 1.6729857819905214) internal successors, (353), 219 states have internal predecessors, (353), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-15 18:06:20,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:20,057 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:20,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:20,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:20,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:20,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1817163777, now seen corresponding path program 1 times [2023-12-15 18:06:20,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:20,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004153941] [2023-12-15 18:06:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:20,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:20,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:20,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004153941] [2023-12-15 18:06:20,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004153941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:20,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:20,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:06:20,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162131478] [2023-12-15 18:06:20,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:20,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:06:20,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:20,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:06:20,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:06:20,700 INFO L87 Difference]: Start difference. First operand has 263 states, 211 states have (on average 1.6729857819905214) internal successors, (353), 219 states have internal predecessors, (353), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:21,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:21,946 INFO L93 Difference]: Finished difference Result 662 states and 1053 transitions. [2023-12-15 18:06:21,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:06:21,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-15 18:06:21,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:21,963 INFO L225 Difference]: With dead ends: 662 [2023-12-15 18:06:21,963 INFO L226 Difference]: Without dead ends: 411 [2023-12-15 18:06:21,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-15 18:06:21,969 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 749 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:21,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1280 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:06:21,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-15 18:06:22,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 349. [2023-12-15 18:06:22,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 279 states have (on average 1.5340501792114696) internal successors, (428), 287 states have internal predecessors, (428), 45 states have call successors, (45), 22 states have call predecessors, (45), 23 states have return successors, (52), 42 states have call predecessors, (52), 41 states have call successors, (52) [2023-12-15 18:06:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 525 transitions. [2023-12-15 18:06:22,058 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 525 transitions. Word has length 58 [2023-12-15 18:06:22,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:22,059 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 525 transitions. [2023-12-15 18:06:22,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:22,059 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 525 transitions. [2023-12-15 18:06:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:22,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:22,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:22,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:06:22,063 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:22,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:22,064 INFO L85 PathProgramCache]: Analyzing trace with hash -549530817, now seen corresponding path program 1 times [2023-12-15 18:06:22,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:22,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220232548] [2023-12-15 18:06:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:22,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:22,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:22,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220232548] [2023-12-15 18:06:22,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220232548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:22,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:22,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:06:22,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231652476] [2023-12-15 18:06:22,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:22,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:06:22,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:06:22,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:06:22,194 INFO L87 Difference]: Start difference. First operand 349 states and 525 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:22,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:22,996 INFO L93 Difference]: Finished difference Result 543 states and 803 transitions. [2023-12-15 18:06:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:06:22,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-15 18:06:22,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:23,000 INFO L225 Difference]: With dead ends: 543 [2023-12-15 18:06:23,001 INFO L226 Difference]: Without dead ends: 377 [2023-12-15 18:06:23,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:06:23,003 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 309 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:23,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1422 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:06:23,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-15 18:06:23,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 357. [2023-12-15 18:06:23,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 285 states have (on average 1.5228070175438597) internal successors, (434), 293 states have internal predecessors, (434), 45 states have call successors, (45), 22 states have call predecessors, (45), 25 states have return successors, (54), 44 states have call predecessors, (54), 41 states have call successors, (54) [2023-12-15 18:06:23,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 533 transitions. [2023-12-15 18:06:23,031 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 533 transitions. Word has length 58 [2023-12-15 18:06:23,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:23,031 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 533 transitions. [2023-12-15 18:06:23,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:23,032 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 533 transitions. [2023-12-15 18:06:23,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:23,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:23,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:23,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:06:23,034 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:23,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:23,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1501453181, now seen corresponding path program 1 times [2023-12-15 18:06:23,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:23,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033624046] [2023-12-15 18:06:23,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:23,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:23,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:23,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:23,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:23,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:23,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:23,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:23,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:23,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:23,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033624046] [2023-12-15 18:06:23,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033624046] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:23,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:23,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 18:06:23,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581192101] [2023-12-15 18:06:23,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:23,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 18:06:23,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:23,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 18:06:23,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:06:23,150 INFO L87 Difference]: Start difference. First operand 357 states and 533 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:23,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:23,886 INFO L93 Difference]: Finished difference Result 563 states and 827 transitions. [2023-12-15 18:06:23,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:06:23,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-15 18:06:23,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:23,889 INFO L225 Difference]: With dead ends: 563 [2023-12-15 18:06:23,889 INFO L226 Difference]: Without dead ends: 389 [2023-12-15 18:06:23,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:06:23,891 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 468 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:23,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1266 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:06:23,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-12-15 18:06:23,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 365. [2023-12-15 18:06:23,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 291 states have (on average 1.5120274914089347) internal successors, (440), 299 states have internal predecessors, (440), 45 states have call successors, (45), 22 states have call predecessors, (45), 27 states have return successors, (56), 46 states have call predecessors, (56), 41 states have call successors, (56) [2023-12-15 18:06:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 541 transitions. [2023-12-15 18:06:23,915 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 541 transitions. Word has length 58 [2023-12-15 18:06:23,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:23,915 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 541 transitions. [2023-12-15 18:06:23,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 541 transitions. [2023-12-15 18:06:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:23,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:23,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:23,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:06:23,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:23,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:23,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1563492795, now seen corresponding path program 1 times [2023-12-15 18:06:23,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:23,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523825065] [2023-12-15 18:06:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:23,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:23,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:23,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:24,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:24,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:24,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:24,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:24,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:24,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:24,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523825065] [2023-12-15 18:06:24,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523825065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:24,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:24,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:06:24,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077407812] [2023-12-15 18:06:24,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:24,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:06:24,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:24,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:06:24,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:06:24,034 INFO L87 Difference]: Start difference. First operand 365 states and 541 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:24,829 INFO L93 Difference]: Finished difference Result 683 states and 992 transitions. [2023-12-15 18:06:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:06:24,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-15 18:06:24,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:24,836 INFO L225 Difference]: With dead ends: 683 [2023-12-15 18:06:24,836 INFO L226 Difference]: Without dead ends: 500 [2023-12-15 18:06:24,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-12-15 18:06:24,842 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 702 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:24,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 1008 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 18:06:24,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-12-15 18:06:24,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 449. [2023-12-15 18:06:24,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 356 states have (on average 1.4803370786516854) internal successors, (527), 365 states have internal predecessors, (527), 56 states have call successors, (56), 29 states have call predecessors, (56), 35 states have return successors, (69), 58 states have call predecessors, (69), 52 states have call successors, (69) [2023-12-15 18:06:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 652 transitions. [2023-12-15 18:06:24,907 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 652 transitions. Word has length 58 [2023-12-15 18:06:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:24,907 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 652 transitions. [2023-12-15 18:06:24,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 652 transitions. [2023-12-15 18:06:24,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:24,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:24,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:24,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:06:24,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:24,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:24,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1782347513, now seen corresponding path program 1 times [2023-12-15 18:06:24,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:24,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111874841] [2023-12-15 18:06:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:24,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:25,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:25,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:25,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:25,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111874841] [2023-12-15 18:06:25,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111874841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:25,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:25,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:06:25,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486425546] [2023-12-15 18:06:25,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:25,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:06:25,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:25,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:06:25,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:06:25,083 INFO L87 Difference]: Start difference. First operand 449 states and 652 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:25,949 INFO L93 Difference]: Finished difference Result 805 states and 1127 transitions. [2023-12-15 18:06:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 18:06:25,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-15 18:06:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:25,952 INFO L225 Difference]: With dead ends: 805 [2023-12-15 18:06:25,953 INFO L226 Difference]: Without dead ends: 547 [2023-12-15 18:06:25,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-12-15 18:06:25,954 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 934 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:25,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 905 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:06:25,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2023-12-15 18:06:25,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 459. [2023-12-15 18:06:25,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 364 states have (on average 1.4697802197802199) internal successors, (535), 373 states have internal predecessors, (535), 57 states have call successors, (57), 30 states have call predecessors, (57), 36 states have return successors, (68), 59 states have call predecessors, (68), 53 states have call successors, (68) [2023-12-15 18:06:25,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 660 transitions. [2023-12-15 18:06:25,999 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 660 transitions. Word has length 58 [2023-12-15 18:06:26,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:26,000 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 660 transitions. [2023-12-15 18:06:26,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:26,000 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 660 transitions. [2023-12-15 18:06:26,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 18:06:26,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:26,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:26,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:06:26,002 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:26,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:26,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2089917957, now seen corresponding path program 1 times [2023-12-15 18:06:26,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:26,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978878290] [2023-12-15 18:06:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:26,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:26,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:26,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978878290] [2023-12-15 18:06:26,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978878290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:26,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:26,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:26,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408651096] [2023-12-15 18:06:26,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:26,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:26,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:26,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:26,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:26,090 INFO L87 Difference]: Start difference. First operand 459 states and 660 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:26,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:26,667 INFO L93 Difference]: Finished difference Result 1041 states and 1447 transitions. [2023-12-15 18:06:26,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 18:06:26,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2023-12-15 18:06:26,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:26,672 INFO L225 Difference]: With dead ends: 1041 [2023-12-15 18:06:26,673 INFO L226 Difference]: Without dead ends: 774 [2023-12-15 18:06:26,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-15 18:06:26,674 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 734 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:26,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 856 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:06:26,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2023-12-15 18:06:26,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 720. [2023-12-15 18:06:26,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 559 states have (on average 1.4186046511627908) internal successors, (793), 575 states have internal predecessors, (793), 92 states have call successors, (92), 52 states have call predecessors, (92), 67 states have return successors, (125), 99 states have call predecessors, (125), 88 states have call successors, (125) [2023-12-15 18:06:26,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1010 transitions. [2023-12-15 18:06:26,713 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1010 transitions. Word has length 58 [2023-12-15 18:06:26,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:26,714 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 1010 transitions. [2023-12-15 18:06:26,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 4 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-15 18:06:26,714 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1010 transitions. [2023-12-15 18:06:26,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 18:06:26,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:26,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:26,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:06:26,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:26,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:26,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1061083199, now seen corresponding path program 1 times [2023-12-15 18:06:26,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:26,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997175019] [2023-12-15 18:06:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:26,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:26,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:26,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997175019] [2023-12-15 18:06:26,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997175019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:26,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:26,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:06:26,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92514691] [2023-12-15 18:06:26,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:26,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:26,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:26,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:26,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:06:26,777 INFO L87 Difference]: Start difference. First operand 720 states and 1010 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:27,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:27,292 INFO L93 Difference]: Finished difference Result 1804 states and 2456 transitions. [2023-12-15 18:06:27,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:06:27,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 59 [2023-12-15 18:06:27,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:27,299 INFO L225 Difference]: With dead ends: 1804 [2023-12-15 18:06:27,299 INFO L226 Difference]: Without dead ends: 1285 [2023-12-15 18:06:27,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-15 18:06:27,301 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 735 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:27,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 735 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:06:27,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2023-12-15 18:06:27,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1131. [2023-12-15 18:06:27,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 870 states have (on average 1.3712643678160918) internal successors, (1193), 893 states have internal predecessors, (1193), 141 states have call successors, (141), 94 states have call predecessors, (141), 118 states have return successors, (195), 150 states have call predecessors, (195), 137 states have call successors, (195) [2023-12-15 18:06:27,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1529 transitions. [2023-12-15 18:06:27,358 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1529 transitions. Word has length 59 [2023-12-15 18:06:27,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:27,359 INFO L495 AbstractCegarLoop]: Abstraction has 1131 states and 1529 transitions. [2023-12-15 18:06:27,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:27,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1529 transitions. [2023-12-15 18:06:27,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 18:06:27,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:27,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:27,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:06:27,361 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:27,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:27,361 INFO L85 PathProgramCache]: Analyzing trace with hash 578816900, now seen corresponding path program 1 times [2023-12-15 18:06:27,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:27,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739387006] [2023-12-15 18:06:27,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:27,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:27,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:27,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:27,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:27,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:27,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:27,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:27,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:27,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:27,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:27,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:27,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739387006] [2023-12-15 18:06:27,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739387006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:27,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:27,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:06:27,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484252764] [2023-12-15 18:06:27,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:27,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:27,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:27,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:27,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:06:27,419 INFO L87 Difference]: Start difference. First operand 1131 states and 1529 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:28,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:28,014 INFO L93 Difference]: Finished difference Result 3091 states and 4092 transitions. [2023-12-15 18:06:28,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:06:28,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2023-12-15 18:06:28,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:28,023 INFO L225 Difference]: With dead ends: 3091 [2023-12-15 18:06:28,024 INFO L226 Difference]: Without dead ends: 2131 [2023-12-15 18:06:28,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:06:28,029 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 492 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:28,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 830 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:06:28,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2023-12-15 18:06:28,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 1947. [2023-12-15 18:06:28,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1947 states, 1488 states have (on average 1.334005376344086) internal successors, (1985), 1517 states have internal predecessors, (1985), 235 states have call successors, (235), 180 states have call predecessors, (235), 222 states have return successors, (333), 256 states have call predecessors, (333), 231 states have call successors, (333) [2023-12-15 18:06:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2553 transitions. [2023-12-15 18:06:28,130 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2553 transitions. Word has length 60 [2023-12-15 18:06:28,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:28,131 INFO L495 AbstractCegarLoop]: Abstraction has 1947 states and 2553 transitions. [2023-12-15 18:06:28,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:28,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2553 transitions. [2023-12-15 18:06:28,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 18:06:28,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:28,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:28,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:06:28,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:28,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:28,135 INFO L85 PathProgramCache]: Analyzing trace with hash 369508739, now seen corresponding path program 1 times [2023-12-15 18:06:28,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:28,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858625607] [2023-12-15 18:06:28,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:28,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:28,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:28,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:28,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:28,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:28,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:28,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:28,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:28,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:28,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858625607] [2023-12-15 18:06:28,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858625607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:28,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:28,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:06:28,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869709877] [2023-12-15 18:06:28,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:28,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:28,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:28,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:28,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:06:28,207 INFO L87 Difference]: Start difference. First operand 1947 states and 2553 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:28,830 INFO L93 Difference]: Finished difference Result 4611 states and 5957 transitions. [2023-12-15 18:06:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:06:28,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2023-12-15 18:06:28,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:28,844 INFO L225 Difference]: With dead ends: 4611 [2023-12-15 18:06:28,844 INFO L226 Difference]: Without dead ends: 2855 [2023-12-15 18:06:28,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:06:28,850 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 723 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:28,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 747 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:06:28,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2023-12-15 18:06:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2613. [2023-12-15 18:06:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 1990 states have (on average 1.3180904522613066) internal successors, (2623), 2027 states have internal predecessors, (2623), 315 states have call successors, (315), 250 states have call predecessors, (315), 306 states have return successors, (442), 342 states have call predecessors, (442), 311 states have call successors, (442) [2023-12-15 18:06:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3380 transitions. [2023-12-15 18:06:29,026 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3380 transitions. Word has length 66 [2023-12-15 18:06:29,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:29,027 INFO L495 AbstractCegarLoop]: Abstraction has 2613 states and 3380 transitions. [2023-12-15 18:06:29,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-15 18:06:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3380 transitions. [2023-12-15 18:06:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-15 18:06:29,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:29,032 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:29,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:06:29,032 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:29,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:29,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1946506328, now seen corresponding path program 1 times [2023-12-15 18:06:29,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:29,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753762918] [2023-12-15 18:06:29,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:29,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:29,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:29,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:29,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:29,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753762918] [2023-12-15 18:06:29,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753762918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:29,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:29,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:29,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645253156] [2023-12-15 18:06:29,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:29,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:29,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:29,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:29,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:29,124 INFO L87 Difference]: Start difference. First operand 2613 states and 3380 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-15 18:06:29,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:29,763 INFO L93 Difference]: Finished difference Result 3333 states and 4257 transitions. [2023-12-15 18:06:29,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 18:06:29,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2023-12-15 18:06:29,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:29,777 INFO L225 Difference]: With dead ends: 3333 [2023-12-15 18:06:29,777 INFO L226 Difference]: Without dead ends: 3330 [2023-12-15 18:06:29,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-15 18:06:29,779 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1289 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:29,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 562 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:06:29,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2023-12-15 18:06:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3063. [2023-12-15 18:06:29,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 2331 states have (on average 1.308880308880309) internal successors, (3051), 2373 states have internal predecessors, (3051), 365 states have call successors, (365), 294 states have call predecessors, (365), 365 states have return successors, (521), 402 states have call predecessors, (521), 362 states have call successors, (521) [2023-12-15 18:06:29,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 3937 transitions. [2023-12-15 18:06:29,957 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 3937 transitions. Word has length 67 [2023-12-15 18:06:29,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:29,957 INFO L495 AbstractCegarLoop]: Abstraction has 3063 states and 3937 transitions. [2023-12-15 18:06:29,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-15 18:06:29,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 3937 transitions. [2023-12-15 18:06:29,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-15 18:06:29,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:29,959 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:29,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:06:29,960 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:29,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:29,961 INFO L85 PathProgramCache]: Analyzing trace with hash -213033363, now seen corresponding path program 1 times [2023-12-15 18:06:29,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:29,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239639843] [2023-12-15 18:06:29,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:29,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:30,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:30,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239639843] [2023-12-15 18:06:30,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239639843] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:06:30,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981342893] [2023-12-15 18:06:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:30,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:06:30,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:06:30,132 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:06:30,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:06:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:30,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-15 18:06:30,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:06:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:30,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 18:06:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:30,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981342893] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 18:06:30,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 18:06:30,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-12-15 18:06:30,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529622068] [2023-12-15 18:06:30,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 18:06:30,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 18:06:30,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:30,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 18:06:30,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:06:30,620 INFO L87 Difference]: Start difference. First operand 3063 states and 3937 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-15 18:06:32,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:32,020 INFO L93 Difference]: Finished difference Result 7130 states and 9049 transitions. [2023-12-15 18:06:32,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-15 18:06:32,021 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 68 [2023-12-15 18:06:32,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:32,054 INFO L225 Difference]: With dead ends: 7130 [2023-12-15 18:06:32,054 INFO L226 Difference]: Without dead ends: 7127 [2023-12-15 18:06:32,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2023-12-15 18:06:32,058 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1795 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:32,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 1127 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:06:32,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7127 states. [2023-12-15 18:06:32,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7127 to 4689. [2023-12-15 18:06:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 3571 states have (on average 1.3057966956034723) internal successors, (4663), 3635 states have internal predecessors, (4663), 549 states have call successors, (549), 452 states have call predecessors, (549), 567 states have return successors, (799), 608 states have call predecessors, (799), 546 states have call successors, (799) [2023-12-15 18:06:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 6011 transitions. [2023-12-15 18:06:32,413 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 6011 transitions. Word has length 68 [2023-12-15 18:06:32,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:32,413 INFO L495 AbstractCegarLoop]: Abstraction has 4689 states and 6011 transitions. [2023-12-15 18:06:32,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-12-15 18:06:32,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 6011 transitions. [2023-12-15 18:06:32,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 18:06:32,416 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:32,416 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:32,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:06:32,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 18:06:32,624 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:32,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:32,624 INFO L85 PathProgramCache]: Analyzing trace with hash 413265768, now seen corresponding path program 2 times [2023-12-15 18:06:32,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:32,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325116516] [2023-12-15 18:06:32,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:32,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:32,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:32,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:32,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:32,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:32,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:32,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:32,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:32,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:32,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:32,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325116516] [2023-12-15 18:06:32,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325116516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:32,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:32,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:06:32,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49788592] [2023-12-15 18:06:32,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:32,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:32,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:32,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:32,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:06:32,686 INFO L87 Difference]: Start difference. First operand 4689 states and 6011 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-15 18:06:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:33,390 INFO L93 Difference]: Finished difference Result 7145 states and 9158 transitions. [2023-12-15 18:06:33,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 18:06:33,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2023-12-15 18:06:33,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:33,405 INFO L225 Difference]: With dead ends: 7145 [2023-12-15 18:06:33,405 INFO L226 Difference]: Without dead ends: 3442 [2023-12-15 18:06:33,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-15 18:06:33,414 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 801 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:33,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 640 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 18:06:33,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2023-12-15 18:06:33,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 3213. [2023-12-15 18:06:33,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3213 states, 2451 states have (on average 1.2872297021623826) internal successors, (3155), 2493 states have internal predecessors, (3155), 381 states have call successors, (381), 308 states have call predecessors, (381), 379 states have return successors, (525), 418 states have call predecessors, (525), 378 states have call successors, (525) [2023-12-15 18:06:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 4061 transitions. [2023-12-15 18:06:33,627 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 4061 transitions. Word has length 71 [2023-12-15 18:06:33,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:33,627 INFO L495 AbstractCegarLoop]: Abstraction has 3213 states and 4061 transitions. [2023-12-15 18:06:33,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-15 18:06:33,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 4061 transitions. [2023-12-15 18:06:33,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-15 18:06:33,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:33,630 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:06:33,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:06:33,630 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:33,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:33,631 INFO L85 PathProgramCache]: Analyzing trace with hash 965940368, now seen corresponding path program 1 times [2023-12-15 18:06:33,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:33,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914479824] [2023-12-15 18:06:33,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:33,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:33,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:33,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-15 18:06:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:33,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-15 18:06:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-15 18:06:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:33,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-15 18:06:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:33,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 18:06:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:33,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-15 18:06:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:33,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-15 18:06:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 18:06:33,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:33,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914479824] [2023-12-15 18:06:33,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914479824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:33,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:33,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 18:06:33,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319217919] [2023-12-15 18:06:33,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:33,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 18:06:33,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:33,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 18:06:33,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-15 18:06:33,741 INFO L87 Difference]: Start difference. First operand 3213 states and 4061 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-15 18:06:35,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:35,057 INFO L93 Difference]: Finished difference Result 9511 states and 11904 transitions. [2023-12-15 18:06:35,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 18:06:35,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2023-12-15 18:06:35,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:35,094 INFO L225 Difference]: With dead ends: 9511 [2023-12-15 18:06:35,094 INFO L226 Difference]: Without dead ends: 5274 [2023-12-15 18:06:35,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2023-12-15 18:06:35,104 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 706 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:35,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1295 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 18:06:35,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5274 states. [2023-12-15 18:06:35,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5274 to 4954. [2023-12-15 18:06:35,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4954 states, 3735 states have (on average 1.259437751004016) internal successors, (4704), 3820 states have internal predecessors, (4704), 585 states have call successors, (585), 482 states have call predecessors, (585), 632 states have return successors, (907), 658 states have call predecessors, (907), 582 states have call successors, (907) [2023-12-15 18:06:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4954 states to 4954 states and 6196 transitions. [2023-12-15 18:06:35,463 INFO L78 Accepts]: Start accepts. Automaton has 4954 states and 6196 transitions. Word has length 76 [2023-12-15 18:06:35,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:35,464 INFO L495 AbstractCegarLoop]: Abstraction has 4954 states and 6196 transitions. [2023-12-15 18:06:35,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-15 18:06:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4954 states and 6196 transitions. [2023-12-15 18:06:35,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:06:35,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:35,467 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] [2023-12-15 18:06:35,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:06:35,467 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:35,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:35,468 INFO L85 PathProgramCache]: Analyzing trace with hash 41108918, now seen corresponding path program 1 times [2023-12-15 18:06:35,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:35,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546588625] [2023-12-15 18:06:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:35,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:35,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:06:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:35,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:06:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:35,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:06:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:35,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:06:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:35,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:35,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546588625] [2023-12-15 18:06:35,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546588625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:35,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:35,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 18:06:35,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477306885] [2023-12-15 18:06:35,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:35,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 18:06:35,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:35,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 18:06:35,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 18:06:35,562 INFO L87 Difference]: Start difference. First operand 4954 states and 6196 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:37,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:37,097 INFO L93 Difference]: Finished difference Result 5375 states and 6874 transitions. [2023-12-15 18:06:37,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 18:06:37,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:06:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:37,116 INFO L225 Difference]: With dead ends: 5375 [2023-12-15 18:06:37,117 INFO L226 Difference]: Without dead ends: 5216 [2023-12-15 18:06:37,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:06:37,119 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 828 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:37,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 730 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:06:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2023-12-15 18:06:37,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 5115. [2023-12-15 18:06:37,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 3876 states have (on average 1.2719298245614035) internal successors, (4930), 3962 states have internal predecessors, (4930), 598 states have call successors, (598), 488 states have call predecessors, (598), 639 states have return successors, (923), 671 states have call predecessors, (923), 595 states have call successors, (923) [2023-12-15 18:06:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 6451 transitions. [2023-12-15 18:06:37,611 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 6451 transitions. Word has length 82 [2023-12-15 18:06:37,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:37,612 INFO L495 AbstractCegarLoop]: Abstraction has 5115 states and 6451 transitions. [2023-12-15 18:06:37,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:37,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 6451 transitions. [2023-12-15 18:06:37,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:06:37,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:37,617 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] [2023-12-15 18:06:37,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:06:37,617 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:37,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:37,618 INFO L85 PathProgramCache]: Analyzing trace with hash -960990346, now seen corresponding path program 1 times [2023-12-15 18:06:37,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:37,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584316111] [2023-12-15 18:06:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:37,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:37,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:06:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:37,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:06:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:37,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:06:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:37,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:06:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:37,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:37,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584316111] [2023-12-15 18:06:37,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584316111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:37,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:37,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:37,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233624427] [2023-12-15 18:06:37,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:37,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:37,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:37,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:37,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:37,749 INFO L87 Difference]: Start difference. First operand 5115 states and 6451 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:39,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:39,556 INFO L93 Difference]: Finished difference Result 5750 states and 7468 transitions. [2023-12-15 18:06:39,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:06:39,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:06:39,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:39,574 INFO L225 Difference]: With dead ends: 5750 [2023-12-15 18:06:39,574 INFO L226 Difference]: Without dead ends: 5430 [2023-12-15 18:06:39,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:06:39,577 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 866 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:39,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 949 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 18:06:39,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5430 states. [2023-12-15 18:06:40,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5430 to 5265. [2023-12-15 18:06:40,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 4006 states have (on average 1.2815776335496756) internal successors, (5134), 4093 states have internal predecessors, (5134), 611 states have call successors, (611), 494 states have call predecessors, (611), 646 states have return successors, (938), 685 states have call predecessors, (938), 608 states have call successors, (938) [2023-12-15 18:06:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 6683 transitions. [2023-12-15 18:06:40,093 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 6683 transitions. Word has length 82 [2023-12-15 18:06:40,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:40,093 INFO L495 AbstractCegarLoop]: Abstraction has 5265 states and 6683 transitions. [2023-12-15 18:06:40,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:40,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 6683 transitions. [2023-12-15 18:06:40,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:06:40,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:40,098 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] [2023-12-15 18:06:40,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:06:40,098 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:40,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash -7050188, now seen corresponding path program 1 times [2023-12-15 18:06:40,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:40,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805824445] [2023-12-15 18:06:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:40,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:40,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:06:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:06:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:40,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:06:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:40,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:06:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:40,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:40,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:40,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805824445] [2023-12-15 18:06:40,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805824445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:40,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:40,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:40,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106730575] [2023-12-15 18:06:40,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:40,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:40,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:40,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:40,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:40,213 INFO L87 Difference]: Start difference. First operand 5265 states and 6683 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:42,180 INFO L93 Difference]: Finished difference Result 6299 states and 8336 transitions. [2023-12-15 18:06:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 18:06:42,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:06:42,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:42,199 INFO L225 Difference]: With dead ends: 6299 [2023-12-15 18:06:42,199 INFO L226 Difference]: Without dead ends: 5829 [2023-12-15 18:06:42,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-15 18:06:42,204 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 835 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:42,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1254 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 18:06:42,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5829 states. [2023-12-15 18:06:42,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5829 to 5566. [2023-12-15 18:06:42,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 4267 states have (on average 1.2990391375673775) internal successors, (5543), 4356 states have internal predecessors, (5543), 637 states have call successors, (637), 506 states have call predecessors, (637), 660 states have return successors, (972), 713 states have call predecessors, (972), 634 states have call successors, (972) [2023-12-15 18:06:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 7152 transitions. [2023-12-15 18:06:42,754 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 7152 transitions. Word has length 82 [2023-12-15 18:06:42,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:42,754 INFO L495 AbstractCegarLoop]: Abstraction has 5566 states and 7152 transitions. [2023-12-15 18:06:42,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:42,755 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 7152 transitions. [2023-12-15 18:06:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:06:42,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:42,759 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] [2023-12-15 18:06:42,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:06:42,759 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:42,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1223203914, now seen corresponding path program 1 times [2023-12-15 18:06:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:42,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991455633] [2023-12-15 18:06:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:06:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:06:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:06:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:06:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:42,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:42,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991455633] [2023-12-15 18:06:42,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991455633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:42,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:42,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:42,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780434209] [2023-12-15 18:06:42,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:42,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:42,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:42,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:42,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:42,886 INFO L87 Difference]: Start difference. First operand 5566 states and 7152 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:44,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:44,227 INFO L93 Difference]: Finished difference Result 6588 states and 8796 transitions. [2023-12-15 18:06:44,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:06:44,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:06:44,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:44,245 INFO L225 Difference]: With dead ends: 6588 [2023-12-15 18:06:44,245 INFO L226 Difference]: Without dead ends: 5817 [2023-12-15 18:06:44,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:06:44,250 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 677 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:44,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 742 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:06:44,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5817 states. [2023-12-15 18:06:44,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5817 to 5566. [2023-12-15 18:06:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 4267 states have (on average 1.29786735411296) internal successors, (5538), 4356 states have internal predecessors, (5538), 637 states have call successors, (637), 506 states have call predecessors, (637), 660 states have return successors, (972), 713 states have call predecessors, (972), 634 states have call successors, (972) [2023-12-15 18:06:44,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 7147 transitions. [2023-12-15 18:06:44,757 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 7147 transitions. Word has length 82 [2023-12-15 18:06:44,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:44,757 INFO L495 AbstractCegarLoop]: Abstraction has 5566 states and 7147 transitions. [2023-12-15 18:06:44,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:44,757 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 7147 transitions. [2023-12-15 18:06:44,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:06:44,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:44,761 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] [2023-12-15 18:06:44,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:06:44,762 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:44,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:44,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1955171340, now seen corresponding path program 1 times [2023-12-15 18:06:44,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:44,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111864535] [2023-12-15 18:06:44,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:44,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:44,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:44,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:06:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:44,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:06:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:44,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:06:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:44,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:06:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:44,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:44,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111864535] [2023-12-15 18:06:44,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111864535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:44,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:44,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:44,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944241866] [2023-12-15 18:06:44,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:44,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:44,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:44,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:44,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:44,883 INFO L87 Difference]: Start difference. First operand 5566 states and 7147 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:46,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:46,129 INFO L93 Difference]: Finished difference Result 6582 states and 8770 transitions. [2023-12-15 18:06:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:06:46,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:06:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:46,145 INFO L225 Difference]: With dead ends: 6582 [2023-12-15 18:06:46,146 INFO L226 Difference]: Without dead ends: 5811 [2023-12-15 18:06:46,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:06:46,150 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 680 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:46,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 742 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:06:46,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2023-12-15 18:06:46,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 5566. [2023-12-15 18:06:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 4267 states have (on average 1.2966955706585424) internal successors, (5533), 4356 states have internal predecessors, (5533), 637 states have call successors, (637), 506 states have call predecessors, (637), 660 states have return successors, (972), 713 states have call predecessors, (972), 634 states have call successors, (972) [2023-12-15 18:06:46,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 7142 transitions. [2023-12-15 18:06:46,727 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 7142 transitions. Word has length 82 [2023-12-15 18:06:46,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:46,728 INFO L495 AbstractCegarLoop]: Abstraction has 5566 states and 7142 transitions. [2023-12-15 18:06:46,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:46,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 7142 transitions. [2023-12-15 18:06:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:06:46,734 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:46,734 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] [2023-12-15 18:06:46,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:06:46,734 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:46,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:46,735 INFO L85 PathProgramCache]: Analyzing trace with hash 653616118, now seen corresponding path program 1 times [2023-12-15 18:06:46,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:46,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595469760] [2023-12-15 18:06:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:46,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:46,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:46,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:06:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:46,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:06:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:46,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:06:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:46,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:06:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:46,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:46,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595469760] [2023-12-15 18:06:46,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595469760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:46,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:46,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:46,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316399950] [2023-12-15 18:06:46,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:46,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:46,885 INFO L87 Difference]: Start difference. First operand 5566 states and 7142 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:48,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:48,863 INFO L93 Difference]: Finished difference Result 7517 states and 10211 transitions. [2023-12-15 18:06:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:06:48,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:06:48,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:48,891 INFO L225 Difference]: With dead ends: 7517 [2023-12-15 18:06:48,891 INFO L226 Difference]: Without dead ends: 6746 [2023-12-15 18:06:48,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:06:48,898 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 935 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:48,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1243 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 18:06:48,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2023-12-15 18:06:49,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 6134. [2023-12-15 18:06:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6134 states, 4759 states have (on average 1.3210758562723262) internal successors, (6287), 4852 states have internal predecessors, (6287), 685 states have call successors, (685), 530 states have call predecessors, (685), 688 states have return successors, (1042), 765 states have call predecessors, (1042), 682 states have call successors, (1042) [2023-12-15 18:06:49,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6134 states to 6134 states and 8014 transitions. [2023-12-15 18:06:49,462 INFO L78 Accepts]: Start accepts. Automaton has 6134 states and 8014 transitions. Word has length 82 [2023-12-15 18:06:49,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:49,463 INFO L495 AbstractCegarLoop]: Abstraction has 6134 states and 8014 transitions. [2023-12-15 18:06:49,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:49,463 INFO L276 IsEmpty]: Start isEmpty. Operand 6134 states and 8014 transitions. [2023-12-15 18:06:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:06:49,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:49,468 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] [2023-12-15 18:06:49,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:06:49,468 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:49,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:49,469 INFO L85 PathProgramCache]: Analyzing trace with hash 236219512, now seen corresponding path program 1 times [2023-12-15 18:06:49,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:49,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747376648] [2023-12-15 18:06:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:49,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:49,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:49,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:06:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:49,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:06:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:49,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:06:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:49,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:06:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:49,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:49,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747376648] [2023-12-15 18:06:49,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747376648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:49,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:49,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:49,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662928107] [2023-12-15 18:06:49,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:49,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:49,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:49,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:49,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:49,577 INFO L87 Difference]: Start difference. First operand 6134 states and 8014 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:50,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:50,907 INFO L93 Difference]: Finished difference Result 7848 states and 10718 transitions. [2023-12-15 18:06:50,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 18:06:50,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:06:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:50,925 INFO L225 Difference]: With dead ends: 7848 [2023-12-15 18:06:50,925 INFO L226 Difference]: Without dead ends: 6509 [2023-12-15 18:06:50,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-15 18:06:50,934 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 676 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:50,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 741 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 18:06:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6509 states. [2023-12-15 18:06:51,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6509 to 6134. [2023-12-15 18:06:51,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6134 states, 4759 states have (on average 1.3191847026686279) internal successors, (6278), 4852 states have internal predecessors, (6278), 685 states have call successors, (685), 530 states have call predecessors, (685), 688 states have return successors, (1042), 765 states have call predecessors, (1042), 682 states have call successors, (1042) [2023-12-15 18:06:51,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6134 states to 6134 states and 8005 transitions. [2023-12-15 18:06:51,589 INFO L78 Accepts]: Start accepts. Automaton has 6134 states and 8005 transitions. Word has length 82 [2023-12-15 18:06:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:51,589 INFO L495 AbstractCegarLoop]: Abstraction has 6134 states and 8005 transitions. [2023-12-15 18:06:51,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 6134 states and 8005 transitions. [2023-12-15 18:06:51,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:06:51,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:51,596 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] [2023-12-15 18:06:51,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:06:51,596 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:51,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:51,597 INFO L85 PathProgramCache]: Analyzing trace with hash 915491766, now seen corresponding path program 1 times [2023-12-15 18:06:51,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:51,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364758988] [2023-12-15 18:06:51,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:51,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:51,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:06:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:51,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:06:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:51,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:06:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:51,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:06:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:51,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:51,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364758988] [2023-12-15 18:06:51,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364758988] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:51,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:51,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:51,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200193662] [2023-12-15 18:06:51,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:51,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:51,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:51,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:51,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:51,721 INFO L87 Difference]: Start difference. First operand 6134 states and 8005 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:53,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:53,642 INFO L93 Difference]: Finished difference Result 9473 states and 13197 transitions. [2023-12-15 18:06:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:06:53,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:06:53,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:53,673 INFO L225 Difference]: With dead ends: 9473 [2023-12-15 18:06:53,673 INFO L226 Difference]: Without dead ends: 8134 [2023-12-15 18:06:53,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:06:53,679 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 858 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:53,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1247 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 18:06:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8134 states. [2023-12-15 18:06:54,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8134 to 7312. [2023-12-15 18:06:54,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7312 states, 5789 states have (on average 1.3567110036275696) internal successors, (7854), 5890 states have internal predecessors, (7854), 777 states have call successors, (777), 578 states have call predecessors, (777), 744 states have return successors, (1196), 865 states have call predecessors, (1196), 774 states have call successors, (1196) [2023-12-15 18:06:54,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7312 states to 7312 states and 9827 transitions. [2023-12-15 18:06:54,385 INFO L78 Accepts]: Start accepts. Automaton has 7312 states and 9827 transitions. Word has length 82 [2023-12-15 18:06:54,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:54,385 INFO L495 AbstractCegarLoop]: Abstraction has 7312 states and 9827 transitions. [2023-12-15 18:06:54,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:54,386 INFO L276 IsEmpty]: Start isEmpty. Operand 7312 states and 9827 transitions. [2023-12-15 18:06:54,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:06:54,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:54,393 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] [2023-12-15 18:06:54,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:06:54,393 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:54,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:54,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1417900872, now seen corresponding path program 1 times [2023-12-15 18:06:54,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:54,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552706742] [2023-12-15 18:06:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:54,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:06:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:06:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:06:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:06:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:54,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:54,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552706742] [2023-12-15 18:06:54,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552706742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:54,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:54,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:54,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333307216] [2023-12-15 18:06:54,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:54,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:54,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:54,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:54,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:54,510 INFO L87 Difference]: Start difference. First operand 7312 states and 9827 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:56,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:56,445 INFO L93 Difference]: Finished difference Result 13489 states and 19457 transitions. [2023-12-15 18:06:56,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 18:06:56,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:06:56,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:56,486 INFO L225 Difference]: With dead ends: 13489 [2023-12-15 18:06:56,486 INFO L226 Difference]: Without dead ends: 10972 [2023-12-15 18:06:56,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-15 18:06:56,500 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 862 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:56,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 905 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:06:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10972 states. [2023-12-15 18:06:57,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10972 to 9665. [2023-12-15 18:06:57,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9665 states, 7854 states have (on average 1.4025974025974026) internal successors, (11016), 7971 states have internal predecessors, (11016), 953 states have call successors, (953), 674 states have call predecessors, (953), 856 states have return successors, (1550), 1057 states have call predecessors, (1550), 950 states have call successors, (1550) [2023-12-15 18:06:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9665 states to 9665 states and 13519 transitions. [2023-12-15 18:06:57,336 INFO L78 Accepts]: Start accepts. Automaton has 9665 states and 13519 transitions. Word has length 82 [2023-12-15 18:06:57,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:06:57,336 INFO L495 AbstractCegarLoop]: Abstraction has 9665 states and 13519 transitions. [2023-12-15 18:06:57,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:57,336 INFO L276 IsEmpty]: Start isEmpty. Operand 9665 states and 13519 transitions. [2023-12-15 18:06:57,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:06:57,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:06:57,345 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] [2023-12-15 18:06:57,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:06:57,346 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:06:57,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:06:57,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1216076938, now seen corresponding path program 1 times [2023-12-15 18:06:57,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:06:57,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548239524] [2023-12-15 18:06:57,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:06:57,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:06:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:57,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:06:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:57,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:06:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:57,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:06:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:57,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:06:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:57,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:06:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:06:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:06:57,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:06:57,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548239524] [2023-12-15 18:06:57,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548239524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:06:57,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:06:57,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:06:57,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762205689] [2023-12-15 18:06:57,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:06:57,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:06:57,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:06:57,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:06:57,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:06:57,444 INFO L87 Difference]: Start difference. First operand 9665 states and 13519 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:06:59,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:06:59,503 INFO L93 Difference]: Finished difference Result 22666 states and 33987 transitions. [2023-12-15 18:06:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 18:06:59,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:06:59,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:06:59,556 INFO L225 Difference]: With dead ends: 22666 [2023-12-15 18:06:59,557 INFO L226 Difference]: Without dead ends: 17797 [2023-12-15 18:06:59,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-15 18:06:59,575 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 935 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:06:59,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 916 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 18:06:59,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17797 states. [2023-12-15 18:07:00,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17797 to 14528. [2023-12-15 18:07:00,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14528 states, 12105 states have (on average 1.4489054109871953) internal successors, (17539), 12304 states have internal predecessors, (17539), 1335 states have call successors, (1335), 872 states have call predecessors, (1335), 1086 states have return successors, (2176), 1389 states have call predecessors, (2176), 1332 states have call successors, (2176) [2023-12-15 18:07:00,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14528 states to 14528 states and 21050 transitions. [2023-12-15 18:07:00,664 INFO L78 Accepts]: Start accepts. Automaton has 14528 states and 21050 transitions. Word has length 82 [2023-12-15 18:07:00,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:07:00,664 INFO L495 AbstractCegarLoop]: Abstraction has 14528 states and 21050 transitions. [2023-12-15 18:07:00,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:07:00,664 INFO L276 IsEmpty]: Start isEmpty. Operand 14528 states and 21050 transitions. [2023-12-15 18:07:00,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 18:07:00,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:07:00,672 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] [2023-12-15 18:07:00,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 18:07:00,672 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:07:00,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:07:00,673 INFO L85 PathProgramCache]: Analyzing trace with hash -967930444, now seen corresponding path program 1 times [2023-12-15 18:07:00,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:07:00,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588825804] [2023-12-15 18:07:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:07:00,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:07:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:00,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-15 18:07:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:00,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-15 18:07:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:00,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-15 18:07:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:00,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-15 18:07:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:00,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-15 18:07:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:07:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:07:00,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:07:00,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588825804] [2023-12-15 18:07:00,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588825804] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:07:00,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:07:00,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 18:07:00,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495404892] [2023-12-15 18:07:00,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:07:00,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 18:07:00,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:07:00,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 18:07:00,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:07:00,808 INFO L87 Difference]: Start difference. First operand 14528 states and 21050 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-15 18:07:03,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:07:03,740 INFO L93 Difference]: Finished difference Result 32464 states and 49384 transitions. [2023-12-15 18:07:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 18:07:03,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2023-12-15 18:07:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:07:03,813 INFO L225 Difference]: With dead ends: 32464 [2023-12-15 18:07:03,813 INFO L226 Difference]: Without dead ends: 22732 Received shutdown request... [2023-12-15 18:07:03,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-12-15 18:07:03,854 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1924 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:07:03,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 1012 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 18:07:03,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22732 states. [2023-12-15 18:07:03,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 18:07:03,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 18:07:03,874 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 18:07:03,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 18:07:03,878 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:07:03,881 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:07:03,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:07:03 BoogieIcfgContainer [2023-12-15 18:07:03,883 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:07:03,884 INFO L158 Benchmark]: Toolchain (without parser) took 45267.85ms. Allocated memory was 186.6MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 142.8MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 876.1MB. Max. memory is 8.0GB. [2023-12-15 18:07:03,884 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 144.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:07:03,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.03ms. Allocated memory is still 186.6MB. Free memory was 142.8MB in the beginning and 122.6MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-15 18:07:03,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.10ms. Allocated memory is still 186.6MB. Free memory was 122.6MB in the beginning and 119.1MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-15 18:07:03,884 INFO L158 Benchmark]: Boogie Preprocessor took 70.24ms. Allocated memory is still 186.6MB. Free memory was 119.1MB in the beginning and 115.2MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 18:07:03,884 INFO L158 Benchmark]: RCFGBuilder took 791.66ms. Allocated memory is still 186.6MB. Free memory was 115.2MB in the beginning and 132.9MB in the end (delta: -17.6MB). Peak memory consumption was 26.4MB. Max. memory is 8.0GB. [2023-12-15 18:07:03,885 INFO L158 Benchmark]: TraceAbstraction took 43927.19ms. Allocated memory was 186.6MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 132.4MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 864.4MB. Max. memory is 8.0GB. [2023-12-15 18:07:03,891 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-12-15 18:07:03,891 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 186.6MB. Free memory is still 144.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 410.03ms. Allocated memory is still 186.6MB. Free memory was 142.8MB in the beginning and 122.6MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.10ms. Allocated memory is still 186.6MB. Free memory was 122.6MB in the beginning and 119.1MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 70.24ms. Allocated memory is still 186.6MB. Free memory was 119.1MB in the beginning and 115.2MB in the end (delta: 3.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 791.66ms. Allocated memory is still 186.6MB. Free memory was 115.2MB in the beginning and 132.9MB in the end (delta: -17.6MB). Peak memory consumption was 26.4MB. Max. memory is 8.0GB. * TraceAbstraction took 43927.19ms. Allocated memory was 186.6MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 132.4MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 864.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 496]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 496). Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 28). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 16 procedures, 263 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 43.9s, OverallIterations: 24, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 31.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21026 SdHoareTripleChecker+Valid, 18.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20513 mSDsluCounter, 23154 SdHoareTripleChecker+Invalid, 15.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17576 mSDsCounter, 3249 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25843 IncrementalHoareTripleChecker+Invalid, 29092 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3249 mSolverCounterUnsat, 5578 mSDtfsCounter, 25843 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 877 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14528occurred in iteration=23, InterpolantAutomatonStates: 319, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 8.2s AutomataMinimizationTime, 24 MinimizatonAttempts, 11543 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1785 NumberOfCodeBlocks, 1785 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1827 ConstructedInterpolants, 0 QuantifiedInterpolants, 5024 SizeOfPredicates, 0 NumberOfNonLiveVariables, 311 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 26 InterpolantComputations, 23 PerfectInterpolantSequences, 22/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown