/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:12:02,003 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:12:02,071 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 01:12:02,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:12:02,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:12:02,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:12:02,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:12:02,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:12:02,090 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:12:02,090 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:12:02,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:12:02,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:12:02,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:12:02,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:12:02,092 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:12:02,093 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:12:02,093 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:12:02,093 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:12:02,093 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:12:02,094 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:12:02,094 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:12:02,094 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:12:02,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:12:02,095 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:12:02,095 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:12:02,095 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:12:02,096 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:12:02,096 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:12:02,096 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:12:02,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:12:02,097 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:12:02,097 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:12:02,097 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:12:02,097 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:12:02,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:12:02,098 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:12:02,098 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:12:02,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:12:02,098 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:12:02,098 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:12:02,099 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:12:02,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:12:02,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:12:02,099 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:12:02,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:12:02,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:12:02,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:12:02,339 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:12:02,343 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:12:02,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.14.cil.c [2023-12-16 01:12:03,467 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:12:03,671 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:12:03,671 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.14.cil.c [2023-12-16 01:12:03,683 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27340988b/b089bce2de2b49aca446ad505cfe0e2c/FLAG232924c2b [2023-12-16 01:12:03,693 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27340988b/b089bce2de2b49aca446ad505cfe0e2c [2023-12-16 01:12:03,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:12:03,696 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:12:03,697 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:12:03,697 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:12:03,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:12:03,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:12:03" (1/1) ... [2023-12-16 01:12:03,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7019bb79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:03, skipping insertion in model container [2023-12-16 01:12:03,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:12:03" (1/1) ... [2023-12-16 01:12:03,754 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:12:03,886 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_3.cil+token_ring.14.cil.c[911,924] [2023-12-16 01:12:03,956 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_3.cil+token_ring.14.cil.c[8416,8429] [2023-12-16 01:12:04,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:12:04,041 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:12:04,048 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_3.cil+token_ring.14.cil.c[911,924] [2023-12-16 01:12:04,076 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_3.cil+token_ring.14.cil.c[8416,8429] [2023-12-16 01:12:04,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:12:04,127 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:12:04,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:04 WrapperNode [2023-12-16 01:12:04,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:12:04,130 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:12:04,130 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:12:04,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:12:04,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:04" (1/1) ... [2023-12-16 01:12:04,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:04" (1/1) ... [2023-12-16 01:12:04,209 INFO L138 Inliner]: procedures = 79, calls = 98, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1110 [2023-12-16 01:12:04,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:12:04,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:12:04,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:12:04,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:12:04,220 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:04" (1/1) ... [2023-12-16 01:12:04,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:04" (1/1) ... [2023-12-16 01:12:04,224 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:04" (1/1) ... [2023-12-16 01:12:04,252 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]. [2023-12-16 01:12:04,253 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:04" (1/1) ... [2023-12-16 01:12:04,253 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:04" (1/1) ... [2023-12-16 01:12:04,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:04" (1/1) ... [2023-12-16 01:12:04,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:04" (1/1) ... [2023-12-16 01:12:04,298 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:04" (1/1) ... [2023-12-16 01:12:04,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:04" (1/1) ... [2023-12-16 01:12:04,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:12:04,307 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:12:04,307 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:12:04,307 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:12:04,307 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:04" (1/1) ... [2023-12-16 01:12:04,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:12:04,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:12:04,346 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) [2023-12-16 01:12:04,388 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 [2023-12-16 01:12:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:12:04,404 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-16 01:12:04,404 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-16 01:12:04,405 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-16 01:12:04,405 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-16 01:12:04,406 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-16 01:12:04,407 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-16 01:12:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-16 01:12:04,407 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-16 01:12:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-16 01:12:04,407 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-16 01:12:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-16 01:12:04,407 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-16 01:12:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-16 01:12:04,407 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-16 01:12:04,407 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-16 01:12:04,408 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-16 01:12:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-16 01:12:04,408 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-16 01:12:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-16 01:12:04,408 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-16 01:12:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-16 01:12:04,408 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-16 01:12:04,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:12:04,409 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-16 01:12:04,409 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-16 01:12:04,410 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-16 01:12:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-16 01:12:04,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:12:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:12:04,410 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-16 01:12:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-16 01:12:04,410 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-16 01:12:04,410 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-16 01:12:04,554 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:12:04,556 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:12:05,149 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-12-16 01:12:05,149 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2023-12-16 01:12:05,218 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:12:05,258 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:12:05,258 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-12-16 01:12:05,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:12:05 BoogieIcfgContainer [2023-12-16 01:12:05,258 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:12:05,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:12:05,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:12:05,262 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:12:05,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:12:03" (1/3) ... [2023-12-16 01:12:05,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b385a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:12:05, skipping insertion in model container [2023-12-16 01:12:05,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:12:04" (2/3) ... [2023-12-16 01:12:05,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b385a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:12:05, skipping insertion in model container [2023-12-16 01:12:05,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:12:05" (3/3) ... [2023-12-16 01:12:05,264 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.14.cil.c [2023-12-16 01:12:05,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:12:05,276 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 01:12:05,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:12:05,319 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;@2f9b751e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:12:05,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 01:12:05,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 458 states, 396 states have (on average 1.7171717171717171) internal successors, (680), 404 states have internal predecessors, (680), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-16 01:12:05,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 01:12:05,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:05,333 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] [2023-12-16 01:12:05,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:05,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:05,337 INFO L85 PathProgramCache]: Analyzing trace with hash -396566493, now seen corresponding path program 1 times [2023-12-16 01:12:05,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:05,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538993753] [2023-12-16 01:12:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:05,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:05,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:05,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:05,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:12:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:05,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:05,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:12:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:05,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:12:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:12:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:05,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:05,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:05,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538993753] [2023-12-16 01:12:05,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538993753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:05,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:05,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 01:12:05,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164312020] [2023-12-16 01:12:05,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:05,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 01:12:05,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:05,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 01:12:05,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:12:05,668 INFO L87 Difference]: Start difference. First operand has 458 states, 396 states have (on average 1.7171717171717171) internal successors, (680), 404 states have internal predecessors, (680), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 01:12:06,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:06,547 INFO L93 Difference]: Finished difference Result 908 states and 1519 transitions. [2023-12-16 01:12:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 01:12:06,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 57 [2023-12-16 01:12:06,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:06,564 INFO L225 Difference]: With dead ends: 908 [2023-12-16 01:12:06,564 INFO L226 Difference]: Without dead ends: 469 [2023-12-16 01:12:06,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:12:06,573 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 750 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:06,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1493 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:12:06,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-12-16 01:12:06,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 452. [2023-12-16 01:12:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 393 states have (on average 1.61323155216285) internal successors, (634), 398 states have internal predecessors, (634), 44 states have call successors, (44), 15 states have call predecessors, (44), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-16 01:12:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 718 transitions. [2023-12-16 01:12:06,630 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 718 transitions. Word has length 57 [2023-12-16 01:12:06,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:06,631 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 718 transitions. [2023-12-16 01:12:06,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-16 01:12:06,631 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 718 transitions. [2023-12-16 01:12:06,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 01:12:06,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:06,633 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] [2023-12-16 01:12:06,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:12:06,633 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:06,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:06,634 INFO L85 PathProgramCache]: Analyzing trace with hash -381047775, now seen corresponding path program 1 times [2023-12-16 01:12:06,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:06,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619724067] [2023-12-16 01:12:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:06,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:06,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:06,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:06,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:12:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:06,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:06,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:12:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:06,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:12:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:06,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:12:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:06,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:06,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619724067] [2023-12-16 01:12:06,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619724067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:06,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:06,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 01:12:06,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573071780] [2023-12-16 01:12:06,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:06,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 01:12:06,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:06,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 01:12:06,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:12:06,796 INFO L87 Difference]: Start difference. First operand 452 states and 718 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 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) [2023-12-16 01:12:07,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:07,773 INFO L93 Difference]: Finished difference Result 684 states and 1064 transitions. [2023-12-16 01:12:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:12:07,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 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 57 [2023-12-16 01:12:07,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:07,777 INFO L225 Difference]: With dead ends: 684 [2023-12-16 01:12:07,777 INFO L226 Difference]: Without dead ends: 590 [2023-12-16 01:12:07,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:12:07,778 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 1559 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:07,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 1553 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:12:07,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-12-16 01:12:07,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 553. [2023-12-16 01:12:07,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 472 states have (on average 1.5868644067796611) internal successors, (749), 479 states have internal predecessors, (749), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-12-16 01:12:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 864 transitions. [2023-12-16 01:12:07,852 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 864 transitions. Word has length 57 [2023-12-16 01:12:07,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:07,852 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 864 transitions. [2023-12-16 01:12:07,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 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) [2023-12-16 01:12:07,852 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 864 transitions. [2023-12-16 01:12:07,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 01:12:07,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:07,874 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] [2023-12-16 01:12:07,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:12:07,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:07,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:07,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1969926753, now seen corresponding path program 1 times [2023-12-16 01:12:07,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:07,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254230311] [2023-12-16 01:12:07,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:07,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:08,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:08,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:08,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:12:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:08,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:08,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:12:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:12:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:12:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:08,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:08,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254230311] [2023-12-16 01:12:08,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254230311] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:08,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:08,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 01:12:08,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638139707] [2023-12-16 01:12:08,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:08,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 01:12:08,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:08,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 01:12:08,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:12:08,186 INFO L87 Difference]: Start difference. First operand 553 states and 864 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 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) [2023-12-16 01:12:09,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:09,457 INFO L93 Difference]: Finished difference Result 914 states and 1393 transitions. [2023-12-16 01:12:09,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 01:12:09,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 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 57 [2023-12-16 01:12:09,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:09,471 INFO L225 Difference]: With dead ends: 914 [2023-12-16 01:12:09,472 INFO L226 Difference]: Without dead ends: 726 [2023-12-16 01:12:09,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-16 01:12:09,473 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1390 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:09,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1422 Valid, 2142 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 01:12:09,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-12-16 01:12:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 654. [2023-12-16 01:12:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 551 states have (on average 1.5662431941923776) internal successors, (863), 560 states have internal predecessors, (863), 70 states have call successors, (70), 29 states have call predecessors, (70), 31 states have return successors, (79), 68 states have call predecessors, (79), 66 states have call successors, (79) [2023-12-16 01:12:09,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1012 transitions. [2023-12-16 01:12:09,532 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1012 transitions. Word has length 57 [2023-12-16 01:12:09,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:09,533 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 1012 transitions. [2023-12-16 01:12:09,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 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) [2023-12-16 01:12:09,533 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1012 transitions. [2023-12-16 01:12:09,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 01:12:09,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:09,535 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] [2023-12-16 01:12:09,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:12:09,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:09,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:09,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1431554205, now seen corresponding path program 1 times [2023-12-16 01:12:09,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:09,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419561167] [2023-12-16 01:12:09,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:09,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:09,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:09,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:12:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:09,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:09,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:12:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:09,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-16 01:12:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-16 01:12:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:09,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:09,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419561167] [2023-12-16 01:12:09,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419561167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:09,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:09,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 01:12:09,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378070952] [2023-12-16 01:12:09,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:09,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 01:12:09,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:09,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 01:12:09,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-16 01:12:09,661 INFO L87 Difference]: Start difference. First operand 654 states and 1012 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-16 01:12:11,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:11,266 INFO L93 Difference]: Finished difference Result 2052 states and 3061 transitions. [2023-12-16 01:12:11,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 01:12:11,267 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 57 [2023-12-16 01:12:11,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:11,274 INFO L225 Difference]: With dead ends: 2052 [2023-12-16 01:12:11,274 INFO L226 Difference]: Without dead ends: 1751 [2023-12-16 01:12:11,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 01:12:11,282 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 3657 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3675 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:11,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3675 Valid, 2391 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 01:12:11,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2023-12-16 01:12:11,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1618. [2023-12-16 01:12:11,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1310 states have (on average 1.465648854961832) internal successors, (1920), 1334 states have internal predecessors, (1920), 180 states have call successors, (180), 112 states have call predecessors, (180), 126 states have return successors, (212), 174 states have call predecessors, (212), 176 states have call successors, (212) [2023-12-16 01:12:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2312 transitions. [2023-12-16 01:12:11,406 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2312 transitions. Word has length 57 [2023-12-16 01:12:11,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:11,407 INFO L495 AbstractCegarLoop]: Abstraction has 1618 states and 2312 transitions. [2023-12-16 01:12:11,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-12-16 01:12:11,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2312 transitions. [2023-12-16 01:12:11,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 01:12:11,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:11,409 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] [2023-12-16 01:12:11,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:12:11,409 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:11,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1917518946, now seen corresponding path program 1 times [2023-12-16 01:12:11,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:11,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823056161] [2023-12-16 01:12:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:11,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:11,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:11,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:11,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:12:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:11,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 01:12:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:11,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 01:12:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:11,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:11,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823056161] [2023-12-16 01:12:11,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823056161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:11,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:11,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:12:11,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531501823] [2023-12-16 01:12:11,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:11,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:12:11,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:11,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:12:11,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:12:11,555 INFO L87 Difference]: Start difference. First operand 1618 states and 2312 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) [2023-12-16 01:12:12,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:12,605 INFO L93 Difference]: Finished difference Result 3015 states and 4260 transitions. [2023-12-16 01:12:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 01:12:12,606 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 [2023-12-16 01:12:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:12,613 INFO L225 Difference]: With dead ends: 3015 [2023-12-16 01:12:12,613 INFO L226 Difference]: Without dead ends: 1756 [2023-12-16 01:12:12,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:12:12,616 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 636 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 2328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:12,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 2540 Invalid, 2328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 01:12:12,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2023-12-16 01:12:12,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1650. [2023-12-16 01:12:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1334 states have (on average 1.4527736131934033) internal successors, (1938), 1358 states have internal predecessors, (1938), 180 states have call successors, (180), 112 states have call predecessors, (180), 134 states have return successors, (220), 182 states have call predecessors, (220), 176 states have call successors, (220) [2023-12-16 01:12:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2338 transitions. [2023-12-16 01:12:12,728 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2338 transitions. Word has length 58 [2023-12-16 01:12:12,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:12,728 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2338 transitions. [2023-12-16 01:12:12,728 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) [2023-12-16 01:12:12,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2338 transitions. [2023-12-16 01:12:12,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 01:12:12,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:12,729 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] [2023-12-16 01:12:12,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 01:12:12,729 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:12,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:12,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1989905504, now seen corresponding path program 1 times [2023-12-16 01:12:12,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:12,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682887550] [2023-12-16 01:12:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:12,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:12,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:12,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:12,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:12:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:12,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:12,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:12,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-16 01:12:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:12,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-16 01:12:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:12,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:12,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682887550] [2023-12-16 01:12:12,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682887550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:12,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:12,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 01:12:12,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650781423] [2023-12-16 01:12:12,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:12,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 01:12:12,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 01:12:12,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-16 01:12:12,851 INFO L87 Difference]: Start difference. First operand 1650 states and 2338 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-16 01:12:14,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:14,335 INFO L93 Difference]: Finished difference Result 4909 states and 6899 transitions. [2023-12-16 01:12:14,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 01:12:14,335 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-12-16 01:12:14,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:14,342 INFO L225 Difference]: With dead ends: 4909 [2023-12-16 01:12:14,342 INFO L226 Difference]: Without dead ends: 2020 [2023-12-16 01:12:14,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 01:12:14,348 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 4193 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4211 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 2720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:14,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4211 Valid, 2092 Invalid, 2720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 01:12:14,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2023-12-16 01:12:14,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 1864. [2023-12-16 01:12:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1476 states have (on average 1.4004065040650406) internal successors, (2067), 1502 states have internal predecessors, (2067), 220 states have call successors, (220), 140 states have call predecessors, (220), 166 states have return successors, (266), 224 states have call predecessors, (266), 216 states have call successors, (266) [2023-12-16 01:12:14,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2553 transitions. [2023-12-16 01:12:14,426 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2553 transitions. Word has length 58 [2023-12-16 01:12:14,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:14,426 INFO L495 AbstractCegarLoop]: Abstraction has 1864 states and 2553 transitions. [2023-12-16 01:12:14,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-16 01:12:14,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2553 transitions. [2023-12-16 01:12:14,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 01:12:14,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:14,428 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, 1, 1, 1, 1] [2023-12-16 01:12:14,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:12:14,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:14,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:14,429 INFO L85 PathProgramCache]: Analyzing trace with hash -638490220, now seen corresponding path program 1 times [2023-12-16 01:12:14,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:14,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231030048] [2023-12-16 01:12:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:14,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:14,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:12:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:14,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:14,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 01:12:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:14,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 01:12:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:14,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-16 01:12:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 01:12:14,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:14,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231030048] [2023-12-16 01:12:14,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231030048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:14,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:14,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:12:14,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638113801] [2023-12-16 01:12:14,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:14,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:12:14,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:14,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:12:14,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:12:14,556 INFO L87 Difference]: Start difference. First operand 1864 states and 2553 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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) [2023-12-16 01:12:15,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:15,543 INFO L93 Difference]: Finished difference Result 3549 states and 4815 transitions. [2023-12-16 01:12:15,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 01:12:15,544 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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 80 [2023-12-16 01:12:15,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:15,551 INFO L225 Difference]: With dead ends: 3549 [2023-12-16 01:12:15,551 INFO L226 Difference]: Without dead ends: 2044 [2023-12-16 01:12:15,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-12-16 01:12:15,555 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 629 mSDsluCounter, 2141 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:15,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 2506 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:12:15,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2023-12-16 01:12:15,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1912. [2023-12-16 01:12:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1512 states have (on average 1.3869047619047619) internal successors, (2097), 1538 states have internal predecessors, (2097), 220 states have call successors, (220), 140 states have call predecessors, (220), 178 states have return successors, (278), 236 states have call predecessors, (278), 216 states have call successors, (278) [2023-12-16 01:12:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 2595 transitions. [2023-12-16 01:12:15,668 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 2595 transitions. Word has length 80 [2023-12-16 01:12:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:15,668 INFO L495 AbstractCegarLoop]: Abstraction has 1912 states and 2595 transitions. [2023-12-16 01:12:15,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 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) [2023-12-16 01:12:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 2595 transitions. [2023-12-16 01:12:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 01:12:15,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:15,670 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, 1, 1, 1, 1] [2023-12-16 01:12:15,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 01:12:15,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:15,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:15,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1289782482, now seen corresponding path program 1 times [2023-12-16 01:12:15,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:15,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663302453] [2023-12-16 01:12:15,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:15,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:15,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:15,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:15,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:12:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:15,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:15,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:15,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 01:12:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:15,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 01:12:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:15,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-16 01:12:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 01:12:15,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:15,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663302453] [2023-12-16 01:12:15,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663302453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:15,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:15,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 01:12:15,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72375307] [2023-12-16 01:12:15,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:15,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 01:12:15,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:15,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 01:12:15,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:12:15,833 INFO L87 Difference]: Start difference. First operand 1912 states and 2595 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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) [2023-12-16 01:12:16,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:16,650 INFO L93 Difference]: Finished difference Result 3311 states and 4431 transitions. [2023-12-16 01:12:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 01:12:16,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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 80 [2023-12-16 01:12:16,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:16,686 INFO L225 Difference]: With dead ends: 3311 [2023-12-16 01:12:16,686 INFO L226 Difference]: Without dead ends: 1979 [2023-12-16 01:12:16,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-16 01:12:16,688 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1735 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 1880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:16,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1767 Valid, 1603 Invalid, 1880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:12:16,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2023-12-16 01:12:16,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1704. [2023-12-16 01:12:16,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1357 states have (on average 1.3942520265291083) internal successors, (1892), 1378 states have internal predecessors, (1892), 192 states have call successors, (192), 121 states have call predecessors, (192), 153 states have return successors, (238), 206 states have call predecessors, (238), 188 states have call successors, (238) [2023-12-16 01:12:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2322 transitions. [2023-12-16 01:12:16,748 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2322 transitions. Word has length 80 [2023-12-16 01:12:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:16,748 INFO L495 AbstractCegarLoop]: Abstraction has 1704 states and 2322 transitions. [2023-12-16 01:12:16,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 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) [2023-12-16 01:12:16,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2322 transitions. [2023-12-16 01:12:16,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 01:12:16,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:16,749 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, 1, 1, 1, 1] [2023-12-16 01:12:16,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 01:12:16,749 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:16,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:16,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1713429204, now seen corresponding path program 1 times [2023-12-16 01:12:16,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:16,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599716273] [2023-12-16 01:12:16,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:16,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:16,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:16,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:16,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:12:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:16,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:16,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 01:12:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:16,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 01:12:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:16,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-16 01:12:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:16,815 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 01:12:16,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:16,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599716273] [2023-12-16 01:12:16,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599716273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:16,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:16,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:12:16,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975411583] [2023-12-16 01:12:16,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:16,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:12:16,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:16,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:12:16,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:12:16,817 INFO L87 Difference]: Start difference. First operand 1704 states and 2322 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 01:12:17,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:17,397 INFO L93 Difference]: Finished difference Result 3153 states and 4251 transitions. [2023-12-16 01:12:17,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 01:12:17,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2023-12-16 01:12:17,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:17,407 INFO L225 Difference]: With dead ends: 3153 [2023-12-16 01:12:17,407 INFO L226 Difference]: Without dead ends: 1809 [2023-12-16 01:12:17,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-12-16 01:12:17,412 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1870 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:17,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1904 Valid, 891 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:12:17,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2023-12-16 01:12:17,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1704. [2023-12-16 01:12:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1357 states have (on average 1.367722918201916) internal successors, (1856), 1378 states have internal predecessors, (1856), 192 states have call successors, (192), 121 states have call predecessors, (192), 153 states have return successors, (238), 206 states have call predecessors, (238), 188 states have call successors, (238) [2023-12-16 01:12:17,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2286 transitions. [2023-12-16 01:12:17,527 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2286 transitions. Word has length 80 [2023-12-16 01:12:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:17,527 INFO L495 AbstractCegarLoop]: Abstraction has 1704 states and 2286 transitions. [2023-12-16 01:12:17,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-16 01:12:17,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2286 transitions. [2023-12-16 01:12:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 01:12:17,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:17,528 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:12:17,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 01:12:17,529 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:17,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:17,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1809860207, now seen corresponding path program 1 times [2023-12-16 01:12:17,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:17,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175071362] [2023-12-16 01:12:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:17,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:17,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:17,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:12:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:17,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:17,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 01:12:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:17,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 01:12:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:17,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 01:12:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:17,628 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 01:12:17,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:17,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175071362] [2023-12-16 01:12:17,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175071362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:17,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:17,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 01:12:17,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653336607] [2023-12-16 01:12:17,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:17,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 01:12:17,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:17,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 01:12:17,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:12:17,630 INFO L87 Difference]: Start difference. First operand 1704 states and 2286 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 01:12:18,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:18,994 INFO L93 Difference]: Finished difference Result 3925 states and 5172 transitions. [2023-12-16 01:12:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-16 01:12:18,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2023-12-16 01:12:18,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:19,002 INFO L225 Difference]: With dead ends: 3925 [2023-12-16 01:12:19,002 INFO L226 Difference]: Without dead ends: 2440 [2023-12-16 01:12:19,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2023-12-16 01:12:19,004 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 2794 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:19,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2837 Valid, 1645 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 01:12:19,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2023-12-16 01:12:19,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2276. [2023-12-16 01:12:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 1775 states have (on average 1.3233802816901408) internal successors, (2349), 1804 states have internal predecessors, (2349), 269 states have call successors, (269), 169 states have call predecessors, (269), 230 states have return successors, (369), 304 states have call predecessors, (369), 265 states have call successors, (369) [2023-12-16 01:12:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 2987 transitions. [2023-12-16 01:12:19,093 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 2987 transitions. Word has length 81 [2023-12-16 01:12:19,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:19,094 INFO L495 AbstractCegarLoop]: Abstraction has 2276 states and 2987 transitions. [2023-12-16 01:12:19,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-16 01:12:19,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 2987 transitions. [2023-12-16 01:12:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-16 01:12:19,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:19,095 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:12:19,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 01:12:19,095 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:19,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:19,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1131838132, now seen corresponding path program 1 times [2023-12-16 01:12:19,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:19,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828546826] [2023-12-16 01:12:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:19,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:12:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 01:12:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 01:12:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 01:12:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:12:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-16 01:12:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:12:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:12:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-16 01:12:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-16 01:12:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-16 01:12:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-16 01:12:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-16 01:12:19,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:19,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828546826] [2023-12-16 01:12:19,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828546826] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:12:19,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850693127] [2023-12-16 01:12:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:19,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:12:19,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:12:19,256 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) [2023-12-16 01:12:19,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 01:12:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:19,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:12:19,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:12:19,486 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-16 01:12:19,486 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:12:19,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850693127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:19,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:12:19,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-16 01:12:19,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195004128] [2023-12-16 01:12:19,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:19,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:12:19,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:19,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:12:19,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:12:19,488 INFO L87 Difference]: Start difference. First operand 2276 states and 2987 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 01:12:19,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:19,711 INFO L93 Difference]: Finished difference Result 5872 states and 7486 transitions. [2023-12-16 01:12:19,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:12:19,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-12-16 01:12:19,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:19,723 INFO L225 Difference]: With dead ends: 5872 [2023-12-16 01:12:19,724 INFO L226 Difference]: Without dead ends: 4026 [2023-12-16 01:12:19,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:12:19,727 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 57 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:19,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1327 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 01:12:19,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2023-12-16 01:12:19,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3986. [2023-12-16 01:12:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3986 states, 3072 states have (on average 1.2835286458333333) internal successors, (3943), 3124 states have internal predecessors, (3943), 476 states have call successors, (476), 330 states have call predecessors, (476), 436 states have return successors, (637), 533 states have call predecessors, (637), 472 states have call successors, (637) [2023-12-16 01:12:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 5056 transitions. [2023-12-16 01:12:19,885 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 5056 transitions. Word has length 145 [2023-12-16 01:12:19,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:19,886 INFO L495 AbstractCegarLoop]: Abstraction has 3986 states and 5056 transitions. [2023-12-16 01:12:19,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-16 01:12:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 5056 transitions. [2023-12-16 01:12:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-16 01:12:19,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:19,890 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:12:19,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 01:12:20,095 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 [2023-12-16 01:12:20,095 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:20,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:20,096 INFO L85 PathProgramCache]: Analyzing trace with hash 776960780, now seen corresponding path program 1 times [2023-12-16 01:12:20,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:20,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111658110] [2023-12-16 01:12:20,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:20,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:12:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 01:12:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 01:12:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 01:12:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:12:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-16 01:12:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:12:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-16 01:12:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-16 01:12:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-16 01:12:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-16 01:12:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:12:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 01:12:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-16 01:12:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-16 01:12:20,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:20,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111658110] [2023-12-16 01:12:20,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111658110] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:12:20,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801090582] [2023-12-16 01:12:20,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:20,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:12:20,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:12:20,284 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:12:20,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 01:12:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:20,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:12:20,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:12:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-16 01:12:20,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:12:20,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801090582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:20,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:12:20,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-16 01:12:20,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226967074] [2023-12-16 01:12:20,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:20,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:12:20,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:20,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:12:20,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:12:20,588 INFO L87 Difference]: Start difference. First operand 3986 states and 5056 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-16 01:12:20,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:20,931 INFO L93 Difference]: Finished difference Result 11238 states and 13996 transitions. [2023-12-16 01:12:20,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:12:20,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 175 [2023-12-16 01:12:20,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:20,961 INFO L225 Difference]: With dead ends: 11238 [2023-12-16 01:12:20,962 INFO L226 Difference]: Without dead ends: 7612 [2023-12-16 01:12:20,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:12:20,969 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 48 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:20,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1296 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 01:12:20,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7612 states. [2023-12-16 01:12:21,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7612 to 7604. [2023-12-16 01:12:21,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7604 states, 5818 states have (on average 1.2567892746648333) internal successors, (7312), 5917 states have internal predecessors, (7312), 918 states have call successors, (918), 652 states have call predecessors, (918), 866 states have return successors, (1244), 1036 states have call predecessors, (1244), 914 states have call successors, (1244) [2023-12-16 01:12:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7604 states to 7604 states and 9474 transitions. [2023-12-16 01:12:21,328 INFO L78 Accepts]: Start accepts. Automaton has 7604 states and 9474 transitions. Word has length 175 [2023-12-16 01:12:21,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:21,328 INFO L495 AbstractCegarLoop]: Abstraction has 7604 states and 9474 transitions. [2023-12-16 01:12:21,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-12-16 01:12:21,329 INFO L276 IsEmpty]: Start isEmpty. Operand 7604 states and 9474 transitions. [2023-12-16 01:12:21,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-16 01:12:21,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:21,331 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:12:21,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 01:12:21,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 01:12:21,537 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:21,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:21,537 INFO L85 PathProgramCache]: Analyzing trace with hash 382593994, now seen corresponding path program 1 times [2023-12-16 01:12:21,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:21,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628396955] [2023-12-16 01:12:21,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:21,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 01:12:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 01:12:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-16 01:12:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-16 01:12:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-16 01:12:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-16 01:12:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-16 01:12:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-16 01:12:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-16 01:12:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-16 01:12:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-12-16 01:12:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-16 01:12:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 01:12:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-16 01:12:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-16 01:12:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-16 01:12:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-16 01:12:21,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:21,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628396955] [2023-12-16 01:12:21,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628396955] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:12:21,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338954379] [2023-12-16 01:12:21,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:21,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:12:21,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:12:21,664 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:12:21,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 01:12:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:21,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:12:21,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:12:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-16 01:12:21,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:12:21,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338954379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:21,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:12:21,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-16 01:12:21,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842953659] [2023-12-16 01:12:21,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:21,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:12:21,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:21,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:12:21,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:12:21,951 INFO L87 Difference]: Start difference. First operand 7604 states and 9474 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 01:12:22,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:22,260 INFO L93 Difference]: Finished difference Result 13590 states and 17146 transitions. [2023-12-16 01:12:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:12:22,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 175 [2023-12-16 01:12:22,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:22,262 INFO L225 Difference]: With dead ends: 13590 [2023-12-16 01:12:22,263 INFO L226 Difference]: Without dead ends: 352 [2023-12-16 01:12:22,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:12:22,281 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 596 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:22,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 641 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:12:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-16 01:12:22,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2023-12-16 01:12:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 317 states have (on average 1.637223974763407) internal successors, (519), 319 states have internal predecessors, (519), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-16 01:12:22,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 573 transitions. [2023-12-16 01:12:22,291 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 573 transitions. Word has length 175 [2023-12-16 01:12:22,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:22,291 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 573 transitions. [2023-12-16 01:12:22,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-16 01:12:22,291 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 573 transitions. [2023-12-16 01:12:22,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 01:12:22,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:22,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:12:22,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 01:12:22,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:12:22,520 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:22,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:22,520 INFO L85 PathProgramCache]: Analyzing trace with hash 971192510, now seen corresponding path program 1 times [2023-12-16 01:12:22,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:22,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198443399] [2023-12-16 01:12:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:22,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:22,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:22,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:12:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:22,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 01:12:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:22,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-16 01:12:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:22,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 01:12:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:22,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:22,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:22,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198443399] [2023-12-16 01:12:22,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198443399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:22,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:22,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 01:12:22,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951104916] [2023-12-16 01:12:22,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:22,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 01:12:22,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:22,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 01:12:22,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:12:22,665 INFO L87 Difference]: Start difference. First operand 352 states and 573 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:12:24,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:24,033 INFO L93 Difference]: Finished difference Result 829 states and 1372 transitions. [2023-12-16 01:12:24,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 01:12:24,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-16 01:12:24,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:24,036 INFO L225 Difference]: With dead ends: 829 [2023-12-16 01:12:24,036 INFO L226 Difference]: Without dead ends: 482 [2023-12-16 01:12:24,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:12:24,038 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 987 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:24,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 639 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-16 01:12:24,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-16 01:12:24,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 352. [2023-12-16 01:12:24,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 317 states have (on average 1.6340694006309149) internal successors, (518), 319 states have internal predecessors, (518), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-16 01:12:24,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 572 transitions. [2023-12-16 01:12:24,049 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 572 transitions. Word has length 162 [2023-12-16 01:12:24,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:24,049 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 572 transitions. [2023-12-16 01:12:24,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:12:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 572 transitions. [2023-12-16 01:12:24,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 01:12:24,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:24,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:12:24,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 01:12:24,050 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:24,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:24,051 INFO L85 PathProgramCache]: Analyzing trace with hash -9762304, now seen corresponding path program 1 times [2023-12-16 01:12:24,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:24,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783281684] [2023-12-16 01:12:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:24,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:24,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:24,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:12:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 01:12:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-16 01:12:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 01:12:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:24,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:24,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:24,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783281684] [2023-12-16 01:12:24,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783281684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:24,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:24,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 01:12:24,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993867103] [2023-12-16 01:12:24,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:24,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 01:12:24,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:24,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 01:12:24,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:12:24,183 INFO L87 Difference]: Start difference. First operand 352 states and 572 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:12:25,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:25,390 INFO L93 Difference]: Finished difference Result 821 states and 1355 transitions. [2023-12-16 01:12:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 01:12:25,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 162 [2023-12-16 01:12:25,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:25,392 INFO L225 Difference]: With dead ends: 821 [2023-12-16 01:12:25,392 INFO L226 Difference]: Without dead ends: 482 [2023-12-16 01:12:25,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:12:25,393 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 978 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:25,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 637 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 01:12:25,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-12-16 01:12:25,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 352. [2023-12-16 01:12:25,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 317 states have (on average 1.6309148264984228) internal successors, (517), 319 states have internal predecessors, (517), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-16 01:12:25,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 571 transitions. [2023-12-16 01:12:25,421 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 571 transitions. Word has length 162 [2023-12-16 01:12:25,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:25,422 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 571 transitions. [2023-12-16 01:12:25,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-16 01:12:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 571 transitions. [2023-12-16 01:12:25,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 01:12:25,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:25,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:12:25,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 01:12:25,437 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:25,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:25,438 INFO L85 PathProgramCache]: Analyzing trace with hash 254885186, now seen corresponding path program 1 times [2023-12-16 01:12:25,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:25,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275827134] [2023-12-16 01:12:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:25,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:25,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:12:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 01:12:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:25,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-16 01:12:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:25,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 01:12:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:25,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:25,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275827134] [2023-12-16 01:12:25,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275827134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:25,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:25,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 01:12:25,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305912539] [2023-12-16 01:12:25,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:25,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 01:12:25,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:25,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 01:12:25,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:12:25,690 INFO L87 Difference]: Start difference. First operand 352 states and 571 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 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) [2023-12-16 01:12:27,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:27,575 INFO L93 Difference]: Finished difference Result 1297 states and 2153 transitions. [2023-12-16 01:12:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 01:12:27,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 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 162 [2023-12-16 01:12:27,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:27,579 INFO L225 Difference]: With dead ends: 1297 [2023-12-16 01:12:27,580 INFO L226 Difference]: Without dead ends: 964 [2023-12-16 01:12:27,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-16 01:12:27,587 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1494 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:27,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1077 Invalid, 2413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 01:12:27,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2023-12-16 01:12:27,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 703. [2023-12-16 01:12:27,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 640 states have (on average 1.6421875) internal successors, (1051), 643 states have internal predecessors, (1051), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-12-16 01:12:27,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1150 transitions. [2023-12-16 01:12:27,655 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1150 transitions. Word has length 162 [2023-12-16 01:12:27,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:27,655 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1150 transitions. [2023-12-16 01:12:27,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 4 states have internal predecessors, (151), 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) [2023-12-16 01:12:27,655 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1150 transitions. [2023-12-16 01:12:27,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 01:12:27,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:27,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:12:27,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 01:12:27,656 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:27,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:27,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1950483198, now seen corresponding path program 1 times [2023-12-16 01:12:27,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:27,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953964907] [2023-12-16 01:12:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:27,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:27,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:27,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:12:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:27,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 01:12:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:27,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-16 01:12:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:27,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 01:12:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:27,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:27,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953964907] [2023-12-16 01:12:27,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953964907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:27,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:27,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:12:27,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342130571] [2023-12-16 01:12:27,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:27,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:12:27,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:27,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:12:27,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:12:27,867 INFO L87 Difference]: Start difference. First operand 703 states and 1150 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-16 01:12:30,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:30,479 INFO L93 Difference]: Finished difference Result 2150 states and 3577 transitions. [2023-12-16 01:12:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:12:30,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-16 01:12:30,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:30,487 INFO L225 Difference]: With dead ends: 2150 [2023-12-16 01:12:30,487 INFO L226 Difference]: Without dead ends: 1466 [2023-12-16 01:12:30,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:12:30,492 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1640 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 3246 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 3348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:30,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 1422 Invalid, 3348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3246 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 01:12:30,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2023-12-16 01:12:30,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1028. [2023-12-16 01:12:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 937 states have (on average 1.6360725720384204) internal successors, (1533), 941 states have internal predecessors, (1533), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2023-12-16 01:12:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1676 transitions. [2023-12-16 01:12:30,606 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1676 transitions. Word has length 162 [2023-12-16 01:12:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:30,606 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1676 transitions. [2023-12-16 01:12:30,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-16 01:12:30,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1676 transitions. [2023-12-16 01:12:30,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 01:12:30,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:30,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:12:30,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 01:12:30,608 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:30,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:30,608 INFO L85 PathProgramCache]: Analyzing trace with hash 556614276, now seen corresponding path program 1 times [2023-12-16 01:12:30,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:30,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817818213] [2023-12-16 01:12:30,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:30,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:30,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:30,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:12:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:30,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 01:12:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:30,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-16 01:12:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:30,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 01:12:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:30,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:30,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817818213] [2023-12-16 01:12:30,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817818213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:30,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:30,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:12:30,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693750590] [2023-12-16 01:12:30,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:30,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:12:30,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:30,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:12:30,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:12:30,835 INFO L87 Difference]: Start difference. First operand 1028 states and 1676 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-16 01:12:33,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:33,396 INFO L93 Difference]: Finished difference Result 3398 states and 5643 transitions. [2023-12-16 01:12:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:12:33,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-16 01:12:33,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:33,410 INFO L225 Difference]: With dead ends: 3398 [2023-12-16 01:12:33,410 INFO L226 Difference]: Without dead ends: 2389 [2023-12-16 01:12:33,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:12:33,414 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1535 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3712 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:33,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 2051 Invalid, 3780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3712 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 01:12:33,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2023-12-16 01:12:33,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1681. [2023-12-16 01:12:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1534 states have (on average 1.6310299869621903) internal successors, (2502), 1540 states have internal predecessors, (2502), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-12-16 01:12:33,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2737 transitions. [2023-12-16 01:12:33,474 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2737 transitions. Word has length 162 [2023-12-16 01:12:33,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:33,474 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2737 transitions. [2023-12-16 01:12:33,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-16 01:12:33,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2737 transitions. [2023-12-16 01:12:33,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 01:12:33,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:33,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:12:33,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 01:12:33,476 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:33,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:33,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1579268926, now seen corresponding path program 1 times [2023-12-16 01:12:33,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:33,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417931907] [2023-12-16 01:12:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:33,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:33,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:33,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:12:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 01:12:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:33,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-16 01:12:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:33,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 01:12:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:33,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:33,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417931907] [2023-12-16 01:12:33,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417931907] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:33,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:33,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:12:33,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208720621] [2023-12-16 01:12:33,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:33,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:12:33,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:33,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:12:33,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:12:33,660 INFO L87 Difference]: Start difference. First operand 1681 states and 2737 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-16 01:12:37,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:37,327 INFO L93 Difference]: Finished difference Result 5797 states and 9596 transitions. [2023-12-16 01:12:37,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:12:37,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-16 01:12:37,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:37,336 INFO L225 Difference]: With dead ends: 5797 [2023-12-16 01:12:37,336 INFO L226 Difference]: Without dead ends: 4135 [2023-12-16 01:12:37,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:12:37,339 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1530 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3700 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:37,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 2051 Invalid, 3768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3700 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 01:12:37,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2023-12-16 01:12:37,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 2990. [2023-12-16 01:12:37,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 2731 states have (on average 1.6272427682167705) internal successors, (4444), 2741 states have internal predecessors, (4444), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-12-16 01:12:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 4869 transitions. [2023-12-16 01:12:37,434 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 4869 transitions. Word has length 162 [2023-12-16 01:12:37,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:37,434 INFO L495 AbstractCegarLoop]: Abstraction has 2990 states and 4869 transitions. [2023-12-16 01:12:37,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-16 01:12:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 4869 transitions. [2023-12-16 01:12:37,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 01:12:37,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:37,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:12:37,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 01:12:37,437 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:37,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1509621052, now seen corresponding path program 1 times [2023-12-16 01:12:37,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:37,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995266814] [2023-12-16 01:12:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:37,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:37,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:37,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:12:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:37,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 01:12:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:37,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-16 01:12:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:37,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 01:12:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:37,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:37,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995266814] [2023-12-16 01:12:37,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995266814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:37,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:37,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:12:37,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559666068] [2023-12-16 01:12:37,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:37,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:12:37,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:37,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:12:37,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:12:37,622 INFO L87 Difference]: Start difference. First operand 2990 states and 4869 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-16 01:12:41,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:41,227 INFO L93 Difference]: Finished difference Result 10596 states and 17522 transitions. [2023-12-16 01:12:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:12:41,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-16 01:12:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:41,248 INFO L225 Difference]: With dead ends: 10596 [2023-12-16 01:12:41,248 INFO L226 Difference]: Without dead ends: 7625 [2023-12-16 01:12:41,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:12:41,259 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1529 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:41,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 2051 Invalid, 3755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3687 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 01:12:41,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2023-12-16 01:12:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 5615. [2023-12-16 01:12:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5615 states, 5132 states have (on average 1.6247077162899455) internal successors, (8338), 5150 states have internal predecessors, (8338), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2023-12-16 01:12:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5615 states to 5615 states and 9161 transitions. [2023-12-16 01:12:41,510 INFO L78 Accepts]: Start accepts. Automaton has 5615 states and 9161 transitions. Word has length 162 [2023-12-16 01:12:41,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:41,510 INFO L495 AbstractCegarLoop]: Abstraction has 5615 states and 9161 transitions. [2023-12-16 01:12:41,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-16 01:12:41,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5615 states and 9161 transitions. [2023-12-16 01:12:41,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 01:12:41,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:41,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:12:41,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 01:12:41,518 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:41,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:41,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1091732350, now seen corresponding path program 1 times [2023-12-16 01:12:41,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:41,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121005213] [2023-12-16 01:12:41,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:41,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:41,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:41,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:12:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:41,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 01:12:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:41,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-16 01:12:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:41,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 01:12:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:41,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:41,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121005213] [2023-12-16 01:12:41,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121005213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:41,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:41,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:12:41,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646049796] [2023-12-16 01:12:41,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:41,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:12:41,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:41,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:12:41,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:12:41,705 INFO L87 Difference]: Start difference. First operand 5615 states and 9161 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-16 01:12:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:45,430 INFO L93 Difference]: Finished difference Result 20195 states and 33436 transitions. [2023-12-16 01:12:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:12:45,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-16 01:12:45,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:45,471 INFO L225 Difference]: With dead ends: 20195 [2023-12-16 01:12:45,471 INFO L226 Difference]: Without dead ends: 14599 [2023-12-16 01:12:45,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:12:45,487 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1528 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3674 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:45,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 2051 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3674 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 01:12:45,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14599 states. [2023-12-16 01:12:46,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14599 to 10880. [2023-12-16 01:12:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10880 states, 9949 states have (on average 1.6230776962508795) internal successors, (16148), 9983 states have internal predecessors, (16148), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2023-12-16 01:12:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10880 states to 10880 states and 17821 transitions. [2023-12-16 01:12:46,070 INFO L78 Accepts]: Start accepts. Automaton has 10880 states and 17821 transitions. Word has length 162 [2023-12-16 01:12:46,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:46,071 INFO L495 AbstractCegarLoop]: Abstraction has 10880 states and 17821 transitions. [2023-12-16 01:12:46,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-16 01:12:46,071 INFO L276 IsEmpty]: Start isEmpty. Operand 10880 states and 17821 transitions. [2023-12-16 01:12:46,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 01:12:46,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:46,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:12:46,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 01:12:46,080 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:46,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:46,080 INFO L85 PathProgramCache]: Analyzing trace with hash 307221252, now seen corresponding path program 1 times [2023-12-16 01:12:46,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:46,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102270299] [2023-12-16 01:12:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:46,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:46,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:46,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:12:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:46,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 01:12:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:46,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-16 01:12:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:46,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 01:12:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:46,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:46,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:46,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102270299] [2023-12-16 01:12:46,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102270299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:46,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:46,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:12:46,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351134912] [2023-12-16 01:12:46,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:46,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:12:46,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:46,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:12:46,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:12:46,315 INFO L87 Difference]: Start difference. First operand 10880 states and 17821 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-16 01:12:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:50,520 INFO L93 Difference]: Finished difference Result 39394 states and 65458 transitions. [2023-12-16 01:12:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:12:50,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-16 01:12:50,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:50,617 INFO L225 Difference]: With dead ends: 39394 [2023-12-16 01:12:50,617 INFO L226 Difference]: Without dead ends: 28533 [2023-12-16 01:12:50,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:12:50,648 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1527 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3661 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:50,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 2051 Invalid, 3729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3661 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 01:12:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28533 states. [2023-12-16 01:12:51,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28533 to 21441. [2023-12-16 01:12:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21441 states, 19614 states have (on average 1.6220046905271746) internal successors, (31814), 19680 states have internal predecessors, (31814), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-12-16 01:12:51,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21441 states to 21441 states and 35349 transitions. [2023-12-16 01:12:51,581 INFO L78 Accepts]: Start accepts. Automaton has 21441 states and 35349 transitions. Word has length 162 [2023-12-16 01:12:51,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:51,581 INFO L495 AbstractCegarLoop]: Abstraction has 21441 states and 35349 transitions. [2023-12-16 01:12:51,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-16 01:12:51,581 INFO L276 IsEmpty]: Start isEmpty. Operand 21441 states and 35349 transitions. [2023-12-16 01:12:51,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 01:12:51,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:51,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:12:51,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 01:12:51,594 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:51,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:51,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1310219198, now seen corresponding path program 1 times [2023-12-16 01:12:51,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:51,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246472010] [2023-12-16 01:12:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:51,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:51,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:12:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 01:12:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:51,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-16 01:12:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:51,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 01:12:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:51,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:51,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:51,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246472010] [2023-12-16 01:12:51,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246472010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:51,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:51,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:12:51,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894355173] [2023-12-16 01:12:51,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:51,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:12:51,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:51,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:12:51,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:12:51,811 INFO L87 Difference]: Start difference. First operand 21441 states and 35349 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-16 01:12:56,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:12:56,823 INFO L93 Difference]: Finished difference Result 77793 states and 130104 transitions. [2023-12-16 01:12:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:12:56,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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 162 [2023-12-16 01:12:56,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:12:56,983 INFO L225 Difference]: With dead ends: 77793 [2023-12-16 01:12:56,983 INFO L226 Difference]: Without dead ends: 56371 [2023-12-16 01:12:57,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:12:57,030 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1532 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 3643 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 3711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:12:57,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 2051 Invalid, 3711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3643 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 01:12:57,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56371 states. [2023-12-16 01:12:58,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56371 to 42626. [2023-12-16 01:12:58,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42626 states, 39007 states have (on average 1.621247468403107) internal successors, (63240), 39137 states have internal predecessors, (63240), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2023-12-16 01:12:59,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42626 states to 42626 states and 70985 transitions. [2023-12-16 01:12:59,089 INFO L78 Accepts]: Start accepts. Automaton has 42626 states and 70985 transitions. Word has length 162 [2023-12-16 01:12:59,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:12:59,089 INFO L495 AbstractCegarLoop]: Abstraction has 42626 states and 70985 transitions. [2023-12-16 01:12:59,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) [2023-12-16 01:12:59,089 INFO L276 IsEmpty]: Start isEmpty. Operand 42626 states and 70985 transitions. [2023-12-16 01:12:59,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-16 01:12:59,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:12:59,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:12:59,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 01:12:59,118 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:12:59,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:12:59,118 INFO L85 PathProgramCache]: Analyzing trace with hash -946752700, now seen corresponding path program 1 times [2023-12-16 01:12:59,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:12:59,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393574583] [2023-12-16 01:12:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:12:59,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:12:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 01:12:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:59,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-16 01:12:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:59,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-16 01:12:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:59,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-16 01:12:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:59,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-16 01:12:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:12:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:12:59,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:12:59,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393574583] [2023-12-16 01:12:59,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393574583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:12:59,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:12:59,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 01:12:59,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357614663] [2023-12-16 01:12:59,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:12:59,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 01:12:59,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:12:59,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 01:12:59,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-16 01:12:59,301 INFO L87 Difference]: Start difference. First operand 42626 states and 70985 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 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) Received shutdown request... [2023-12-16 01:13:04,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 01:13:04,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-16 01:13:04,593 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 1504 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 2648 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:13:04,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 971 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2648 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 01:13:04,594 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 01:13:04,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 01:13:04,595 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (42626states) and FLOYD_HOARE automaton (currently 14 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (143681 states constructed, input type IntersectNwa). [2023-12-16 01:13:04,596 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 01:13:04,598 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-16 01:13:04,599 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 01:13:04,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:13:04 BoogieIcfgContainer [2023-12-16 01:13:04,601 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 01:13:04,601 INFO L158 Benchmark]: Toolchain (without parser) took 60905.05ms. Allocated memory was 254.8MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 205.8MB in the beginning and 1.1GB in the end (delta: -847.3MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-16 01:13:04,601 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:13:04,601 INFO L158 Benchmark]: CACSL2BoogieTranslator took 431.70ms. Allocated memory is still 254.8MB. Free memory was 205.5MB in the beginning and 176.8MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-12-16 01:13:04,601 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.49ms. Allocated memory is still 254.8MB. Free memory was 176.8MB in the beginning and 172.0MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 01:13:04,601 INFO L158 Benchmark]: Boogie Preprocessor took 95.51ms. Allocated memory is still 254.8MB. Free memory was 172.0MB in the beginning and 165.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-16 01:13:04,602 INFO L158 Benchmark]: RCFGBuilder took 951.87ms. Allocated memory is still 254.8MB. Free memory was 165.7MB in the beginning and 159.5MB in the end (delta: 6.2MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. [2023-12-16 01:13:04,602 INFO L158 Benchmark]: TraceAbstraction took 59340.77ms. Allocated memory was 254.8MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 158.4MB in the beginning and 1.1GB in the end (delta: -894.7MB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-16 01:13:04,603 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 431.70ms. Allocated memory is still 254.8MB. Free memory was 205.5MB in the beginning and 176.8MB in the end (delta: 28.7MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 80.49ms. Allocated memory is still 254.8MB. Free memory was 176.8MB in the beginning and 172.0MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 95.51ms. Allocated memory is still 254.8MB. Free memory was 172.0MB in the beginning and 165.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 951.87ms. Allocated memory is still 254.8MB. Free memory was 165.7MB in the beginning and 159.5MB in the end (delta: 6.2MB). Peak memory consumption was 15.1MB. Max. memory is 8.0GB. * TraceAbstraction took 59340.77ms. Allocated memory was 254.8MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 158.4MB in the beginning and 1.1GB in the end (delta: -894.7MB). Peak memory consumption was 1.4GB. 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: 599]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 599). Cancelled while NwaCegarLoop was constructing difference of abstraction (42626states) and FLOYD_HOARE automaton (currently 14 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (143681 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 27). Cancelled while NwaCegarLoop was constructing difference of abstraction (42626states) and FLOYD_HOARE automaton (currently 14 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (143681 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 16 procedures, 458 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 59.3s, OverallIterations: 24, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 47.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36114 SdHoareTripleChecker+Valid, 31.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35698 mSDsluCounter, 39172 SdHoareTripleChecker+Invalid, 26.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29169 mSDsCounter, 3804 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49766 IncrementalHoareTripleChecker+Invalid, 53570 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3804 mSolverCounterUnsat, 10003 mSDtfsCounter, 49766 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1309 GetRequests, 952 SyntacticMatches, 0 SemanticMatches, 357 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42626occurred in iteration=23, InterpolantAutomatonStates: 303, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.6s AutomataMinimizationTime, 23 MinimizatonAttempts, 30623 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 3437 NumberOfCodeBlocks, 3437 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 3410 ConstructedInterpolants, 0 QuantifiedInterpolants, 8416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1940 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 27 InterpolantComputations, 24 PerfectInterpolantSequences, 747/765 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 [2023-12-16 01:13:04,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0