/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.10.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:53:47,515 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:53:47,566 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:53:47,570 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:53:47,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:53:47,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:53:47,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:53:47,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:53:47,590 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:53:47,590 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:53:47,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:53:47,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:53:47,591 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:53:47,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:53:47,592 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:53:47,592 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:53:47,592 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:53:47,593 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:53:47,593 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:53:47,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:53:47,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:53:47,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:53:47,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:53:47,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:53:47,598 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:53:47,599 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:53:47,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:53:47,599 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:53:47,600 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:53:47,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:53:47,600 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:53:47,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:53:47,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:53:47,601 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:53:47,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:53:47,602 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:53:47,602 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:53:47,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:53:47,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:53:47,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:53:47,603 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:53:47,607 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:53:47,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:53:47,607 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:53:47,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:53:47,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:53:47,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:53:47,876 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:53:47,876 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:53:47,877 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.10.cil-1.c [2023-12-20 14:53:49,135 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:53:49,364 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:53:49,365 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.10.cil-1.c [2023-12-20 14:53:49,380 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1874fee95/e321dd086df247b5b0a35ab5a2173a7e/FLAG4952aa95a [2023-12-20 14:53:49,395 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1874fee95/e321dd086df247b5b0a35ab5a2173a7e [2023-12-20 14:53:49,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:53:49,398 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:53:49,400 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:53:49,400 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:53:49,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:53:49,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:53:49" (1/1) ... [2023-12-20 14:53:49,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e49e9f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49, skipping insertion in model container [2023-12-20 14:53:49,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:53:49" (1/1) ... [2023-12-20 14:53:49,466 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:53:49,597 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.10.cil-1.c[911,924] [2023-12-20 14:53:49,663 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.10.cil-1.c[8416,8429] [2023-12-20 14:53:49,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:53:49,789 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:53:49,800 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.10.cil-1.c[911,924] [2023-12-20 14:53:49,826 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.10.cil-1.c[8416,8429] [2023-12-20 14:53:49,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:53:49,908 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:53:49,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49 WrapperNode [2023-12-20 14:53:49,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:53:49,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:53:49,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:53:49,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:53:49,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49" (1/1) ... [2023-12-20 14:53:49,927 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49" (1/1) ... [2023-12-20 14:53:49,979 INFO L138 Inliner]: procedures = 75, calls = 92, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 992 [2023-12-20 14:53:49,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:53:49,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:53:49,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:53:49,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:53:49,995 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49" (1/1) ... [2023-12-20 14:53:49,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49" (1/1) ... [2023-12-20 14:53:50,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49" (1/1) ... [2023-12-20 14:53:50,026 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 14:53:50,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49" (1/1) ... [2023-12-20 14:53:50,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49" (1/1) ... [2023-12-20 14:53:50,040 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49" (1/1) ... [2023-12-20 14:53:50,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49" (1/1) ... [2023-12-20 14:53:50,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49" (1/1) ... [2023-12-20 14:53:50,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49" (1/1) ... [2023-12-20 14:53:50,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:53:50,069 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:53:50,069 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:53:50,069 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:53:50,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49" (1/1) ... [2023-12-20 14:53:50,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:53:50,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:53:50,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 14:53:50,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 14:53:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:53:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-20 14:53:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-20 14:53:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-12-20 14:53:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-12-20 14:53:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-12-20 14:53:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-12-20 14:53:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-12-20 14:53:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-12-20 14:53:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-12-20 14:53:50,147 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-12-20 14:53:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-12-20 14:53:50,147 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-12-20 14:53:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-12-20 14:53:50,147 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-12-20 14:53:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-12-20 14:53:50,147 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-12-20 14:53:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-12-20 14:53:50,147 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-12-20 14:53:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-12-20 14:53:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-12-20 14:53:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-12-20 14:53:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-12-20 14:53:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:53:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-12-20 14:53:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-12-20 14:53:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-12-20 14:53:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-12-20 14:53:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:53:50,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:53:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-12-20 14:53:50,149 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-12-20 14:53:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-12-20 14:53:50,149 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-12-20 14:53:50,308 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:53:50,311 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:53:51,025 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-12-20 14:53:51,025 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; [2023-12-20 14:53:51,115 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:53:51,182 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:53:51,182 INFO L309 CfgBuilder]: Removed 17 assume(true) statements. [2023-12-20 14:53:51,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:53:51 BoogieIcfgContainer [2023-12-20 14:53:51,182 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:53:51,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:53:51,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:53:51,189 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:53:51,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:53:49" (1/3) ... [2023-12-20 14:53:51,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cad3aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:53:51, skipping insertion in model container [2023-12-20 14:53:51,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:53:49" (2/3) ... [2023-12-20 14:53:51,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cad3aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:53:51, skipping insertion in model container [2023-12-20 14:53:51,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:53:51" (3/3) ... [2023-12-20 14:53:51,192 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.10.cil-1.c [2023-12-20 14:53:51,208 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:53:51,208 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:53:51,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:53:51,281 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;@5a20374b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:53:51,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:53:51,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 414 states, 354 states have (on average 1.7118644067796611) internal successors, (606), 362 states have internal predecessors, (606), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-20 14:53:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 14:53:51,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:51,302 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] [2023-12-20 14:53:51,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:51,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:51,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1036360840, now seen corresponding path program 1 times [2023-12-20 14:53:51,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:51,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435016413] [2023-12-20 14:53:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:51,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:51,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:51,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:51,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:51,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:53:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:51,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:53:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:51,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:53:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:51,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:53:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:51,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:51,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:51,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435016413] [2023-12-20 14:53:51,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435016413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:51,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:51,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:53:51,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119005328] [2023-12-20 14:53:51,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:51,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:53:51,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:51,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:53:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:53:51,927 INFO L87 Difference]: Start difference. First operand has 414 states, 354 states have (on average 1.7118644067796611) internal successors, (606), 362 states have internal predecessors, (606), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) 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) [2023-12-20 14:53:53,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:53,303 INFO L93 Difference]: Finished difference Result 942 states and 1561 transitions. [2023-12-20 14:53:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:53:53,306 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 [2023-12-20 14:53:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:53,322 INFO L225 Difference]: With dead ends: 942 [2023-12-20 14:53:53,322 INFO L226 Difference]: Without dead ends: 546 [2023-12-20 14:53:53,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:53:53,332 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 1399 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:53,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 1421 Invalid, 1595 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [244 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:53:53,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2023-12-20 14:53:53,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 509. [2023-12-20 14:53:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 430 states have (on average 1.583720930232558) internal successors, (681), 437 states have internal predecessors, (681), 55 states have call successors, (55), 22 states have call predecessors, (55), 22 states have return successors, (56), 52 states have call predecessors, (56), 51 states have call successors, (56) [2023-12-20 14:53:53,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 792 transitions. [2023-12-20 14:53:53,433 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 792 transitions. Word has length 57 [2023-12-20 14:53:53,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:53,433 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 792 transitions. [2023-12-20 14:53:53,434 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) [2023-12-20 14:53:53,434 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 792 transitions. [2023-12-20 14:53:53,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 14:53:53,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:53,437 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] [2023-12-20 14:53:53,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:53:53,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:53,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:53,438 INFO L85 PathProgramCache]: Analyzing trace with hash -907631928, now seen corresponding path program 1 times [2023-12-20 14:53:53,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:53,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58040391] [2023-12-20 14:53:53,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:53,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:53,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:53,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:53,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:53,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:53:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:53,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:53:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:53,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:53:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:53,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:53:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:53,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:53,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58040391] [2023-12-20 14:53:53,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58040391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:53,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:53,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:53:53,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817106317] [2023-12-20 14:53:53,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:53,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:53:53,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:53,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:53:53,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:53:53,664 INFO L87 Difference]: Start difference. First operand 509 states and 792 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) [2023-12-20 14:53:55,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:55,011 INFO L93 Difference]: Finished difference Result 870 states and 1322 transitions. [2023-12-20 14:53:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 14:53:55,012 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 [2023-12-20 14:53:55,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:55,016 INFO L225 Difference]: With dead ends: 870 [2023-12-20 14:53:55,016 INFO L226 Difference]: Without dead ends: 682 [2023-12-20 14:53:55,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-12-20 14:53:55,019 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1249 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 1978 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:55,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 1978 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1821 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:53:55,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-12-20 14:53:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 610. [2023-12-20 14:53:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 509 states have (on average 1.5638506876227898) internal successors, (796), 518 states have internal predecessors, (796), 68 states have call successors, (68), 29 states have call predecessors, (68), 31 states have return successors, (77), 66 states have call predecessors, (77), 64 states have call successors, (77) [2023-12-20 14:53:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 941 transitions. [2023-12-20 14:53:55,066 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 941 transitions. Word has length 57 [2023-12-20 14:53:55,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:55,066 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 941 transitions. [2023-12-20 14:53:55,066 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) [2023-12-20 14:53:55,066 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 941 transitions. [2023-12-20 14:53:55,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 14:53:55,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:55,069 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] [2023-12-20 14:53:55,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:53:55,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:55,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:55,070 INFO L85 PathProgramCache]: Analyzing trace with hash -14145590, now seen corresponding path program 1 times [2023-12-20 14:53:55,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:55,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701183879] [2023-12-20 14:53:55,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:55,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:55,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:55,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:55,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:53:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:55,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:53:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:55,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 14:53:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:55,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 14:53:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:55,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:55,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701183879] [2023-12-20 14:53:55,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701183879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:55,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:55,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 14:53:55,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970825294] [2023-12-20 14:53:55,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:55,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:53:55,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:55,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:53:55,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:53:55,214 INFO L87 Difference]: Start difference. First operand 610 states and 941 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) [2023-12-20 14:53:57,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:57,000 INFO L93 Difference]: Finished difference Result 2008 states and 2991 transitions. [2023-12-20 14:53:57,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 14:53:57,001 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 [2023-12-20 14:53:57,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:57,012 INFO L225 Difference]: With dead ends: 2008 [2023-12-20 14:53:57,013 INFO L226 Difference]: Without dead ends: 1707 [2023-12-20 14:53:57,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 14:53:57,018 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 3726 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:57,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3744 Valid, 1895 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [666 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 14:53:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2023-12-20 14:53:57,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1574. [2023-12-20 14:53:57,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1268 states have (on average 1.4597791798107256) internal successors, (1851), 1292 states have internal predecessors, (1851), 178 states have call successors, (178), 112 states have call predecessors, (178), 126 states have return successors, (210), 172 states have call predecessors, (210), 174 states have call successors, (210) [2023-12-20 14:53:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2239 transitions. [2023-12-20 14:53:57,127 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2239 transitions. Word has length 57 [2023-12-20 14:53:57,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:57,128 INFO L495 AbstractCegarLoop]: Abstraction has 1574 states and 2239 transitions. [2023-12-20 14:53:57,128 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) [2023-12-20 14:53:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2239 transitions. [2023-12-20 14:53:57,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:53:57,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:57,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:53:57,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:53:57,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:57,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:57,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1585612455, now seen corresponding path program 1 times [2023-12-20 14:53:57,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:57,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510512992] [2023-12-20 14:53:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:57,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:57,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:57,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:57,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:53:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:57,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:57,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 14:53:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:57,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:53:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:57,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:57,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510512992] [2023-12-20 14:53:57,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510512992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:57,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:57,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:53:57,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687396822] [2023-12-20 14:53:57,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:57,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:53:57,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:57,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:53:57,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:53:57,330 INFO L87 Difference]: Start difference. First operand 1574 states and 2239 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:53:58,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:53:58,520 INFO L93 Difference]: Finished difference Result 2971 states and 4187 transitions. [2023-12-20 14:53:58,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 14:53:58,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-20 14:53:58,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:53:58,529 INFO L225 Difference]: With dead ends: 2971 [2023-12-20 14:53:58,529 INFO L226 Difference]: Without dead ends: 1712 [2023-12-20 14:53:58,532 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 [2023-12-20 14:53:58,533 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 560 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:53:58,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 2312 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2003 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 14:53:58,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2023-12-20 14:53:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1606. [2023-12-20 14:53:58,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1292 states have (on average 1.446594427244582) internal successors, (1869), 1316 states have internal predecessors, (1869), 178 states have call successors, (178), 112 states have call predecessors, (178), 134 states have return successors, (218), 180 states have call predecessors, (218), 174 states have call successors, (218) [2023-12-20 14:53:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2265 transitions. [2023-12-20 14:53:58,636 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2265 transitions. Word has length 58 [2023-12-20 14:53:58,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:53:58,637 INFO L495 AbstractCegarLoop]: Abstraction has 1606 states and 2265 transitions. [2023-12-20 14:53:58,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 14:53:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2265 transitions. [2023-12-20 14:53:58,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-20 14:53:58,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:53:58,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:53:58,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:53:58,639 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:53:58,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:53:58,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1513225897, now seen corresponding path program 1 times [2023-12-20 14:53:58,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:53:58,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662414591] [2023-12-20 14:53:58,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:53:58,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:53:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:58,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:53:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:58,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:58,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:53:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:58,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:53:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:58,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:53:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:58,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 14:53:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:58,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:53:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:53:58,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:53:58,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:53:58,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662414591] [2023-12-20 14:53:58,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662414591] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:53:58,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:53:58,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 14:53:58,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548975943] [2023-12-20 14:53:58,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:53:58,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 14:53:58,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:53:58,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 14:53:58,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-20 14:53:58,834 INFO L87 Difference]: Start difference. First operand 1606 states and 2265 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) [2023-12-20 14:54:00,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:00,776 INFO L93 Difference]: Finished difference Result 4865 states and 6826 transitions. [2023-12-20 14:54:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 14:54:00,777 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 [2023-12-20 14:54:00,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:00,787 INFO L225 Difference]: With dead ends: 4865 [2023-12-20 14:54:00,787 INFO L226 Difference]: Without dead ends: 1976 [2023-12-20 14:54:00,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 14:54:00,794 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 3453 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3471 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:00,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3471 Valid, 2272 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 2015 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 14:54:00,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2023-12-20 14:54:00,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1820. [2023-12-20 14:54:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1434 states have (on average 1.393305439330544) internal successors, (1998), 1460 states have internal predecessors, (1998), 218 states have call successors, (218), 140 states have call predecessors, (218), 166 states have return successors, (264), 222 states have call predecessors, (264), 214 states have call successors, (264) [2023-12-20 14:54:00,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2480 transitions. [2023-12-20 14:54:00,903 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2480 transitions. Word has length 58 [2023-12-20 14:54:00,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:00,903 INFO L495 AbstractCegarLoop]: Abstraction has 1820 states and 2480 transitions. [2023-12-20 14:54:00,904 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) [2023-12-20 14:54:00,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2480 transitions. [2023-12-20 14:54:00,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 14:54:00,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:00,905 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] [2023-12-20 14:54:00,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:54:00,906 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:00,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:00,906 INFO L85 PathProgramCache]: Analyzing trace with hash 63774575, now seen corresponding path program 1 times [2023-12-20 14:54:00,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:00,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497239861] [2023-12-20 14:54:00,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:00,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:00,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:00,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:00,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:01,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:01,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:01,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:54:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:01,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:54:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:01,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:54:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:54:01,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:01,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497239861] [2023-12-20 14:54:01,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497239861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:01,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:01,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:54:01,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828053648] [2023-12-20 14:54:01,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:01,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:54:01,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:01,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:54:01,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:54:01,055 INFO L87 Difference]: Start difference. First operand 1820 states and 2480 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) [2023-12-20 14:54:02,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:02,307 INFO L93 Difference]: Finished difference Result 3505 states and 4742 transitions. [2023-12-20 14:54:02,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 14:54:02,308 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 [2023-12-20 14:54:02,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:02,316 INFO L225 Difference]: With dead ends: 3505 [2023-12-20 14:54:02,316 INFO L226 Difference]: Without dead ends: 2000 [2023-12-20 14:54:02,320 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 [2023-12-20 14:54:02,323 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 553 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:02,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 2278 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1970 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:54:02,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2023-12-20 14:54:02,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1868. [2023-12-20 14:54:02,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1470 states have (on average 1.379591836734694) internal successors, (2028), 1496 states have internal predecessors, (2028), 218 states have call successors, (218), 140 states have call predecessors, (218), 178 states have return successors, (276), 234 states have call predecessors, (276), 214 states have call successors, (276) [2023-12-20 14:54:02,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2522 transitions. [2023-12-20 14:54:02,433 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2522 transitions. Word has length 80 [2023-12-20 14:54:02,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:02,434 INFO L495 AbstractCegarLoop]: Abstraction has 1868 states and 2522 transitions. [2023-12-20 14:54:02,435 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) [2023-12-20 14:54:02,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2522 transitions. [2023-12-20 14:54:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 14:54:02,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:02,438 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] [2023-12-20 14:54:02,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:54:02,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:02,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:02,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1992047277, now seen corresponding path program 1 times [2023-12-20 14:54:02,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:02,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021437285] [2023-12-20 14:54:02,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:02,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:02,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:02,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:02,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:02,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:02,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:54:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:02,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:54:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:02,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:54:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:54:02,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:02,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021437285] [2023-12-20 14:54:02,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021437285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:02,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:02,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:54:02,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706439041] [2023-12-20 14:54:02,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:02,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:54:02,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:02,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:54:02,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:54:02,639 INFO L87 Difference]: Start difference. First operand 1868 states and 2522 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) [2023-12-20 14:54:03,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:03,877 INFO L93 Difference]: Finished difference Result 3267 states and 4358 transitions. [2023-12-20 14:54:03,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 14:54:03,878 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 [2023-12-20 14:54:03,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:03,888 INFO L225 Difference]: With dead ends: 3267 [2023-12-20 14:54:03,888 INFO L226 Difference]: Without dead ends: 1935 [2023-12-20 14:54:03,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-12-20 14:54:03,893 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1251 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:03,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 1738 Invalid, 1775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:54:03,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2023-12-20 14:54:03,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1660. [2023-12-20 14:54:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 1315 states have (on average 1.3863117870722435) internal successors, (1823), 1336 states have internal predecessors, (1823), 190 states have call successors, (190), 121 states have call predecessors, (190), 153 states have return successors, (236), 204 states have call predecessors, (236), 186 states have call successors, (236) [2023-12-20 14:54:03,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2249 transitions. [2023-12-20 14:54:03,989 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2249 transitions. Word has length 80 [2023-12-20 14:54:03,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:03,990 INFO L495 AbstractCegarLoop]: Abstraction has 1660 states and 2249 transitions. [2023-12-20 14:54:03,990 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) [2023-12-20 14:54:03,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2249 transitions. [2023-12-20 14:54:03,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 14:54:03,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:03,993 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] [2023-12-20 14:54:03,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:54:03,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:03,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:03,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1879273297, now seen corresponding path program 1 times [2023-12-20 14:54:03,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:03,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23464364] [2023-12-20 14:54:03,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:03,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:04,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:04,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:04,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:54:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:04,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:54:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:04,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:54:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:54:04,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:04,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23464364] [2023-12-20 14:54:04,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23464364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:04,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:04,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:04,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269941167] [2023-12-20 14:54:04,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:04,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:04,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:04,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:04,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:04,104 INFO L87 Difference]: Start difference. First operand 1660 states and 2249 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) [2023-12-20 14:54:04,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:04,993 INFO L93 Difference]: Finished difference Result 4560 states and 6109 transitions. [2023-12-20 14:54:04,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 14:54:04,994 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 [2023-12-20 14:54:04,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:05,015 INFO L225 Difference]: With dead ends: 4560 [2023-12-20 14:54:05,015 INFO L226 Difference]: Without dead ends: 3216 [2023-12-20 14:54:05,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-12-20 14:54:05,021 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 1180 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:05,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 1504 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 14:54:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2023-12-20 14:54:05,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 3006. [2023-12-20 14:54:05,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 2341 states have (on average 1.3361811191798376) internal successors, (3128), 2391 states have internal predecessors, (3128), 351 states have call successors, (351), 234 states have call predecessors, (351), 312 states have return successors, (519), 383 states have call predecessors, (519), 347 states have call successors, (519) [2023-12-20 14:54:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 3998 transitions. [2023-12-20 14:54:05,220 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 3998 transitions. Word has length 80 [2023-12-20 14:54:05,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:05,220 INFO L495 AbstractCegarLoop]: Abstraction has 3006 states and 3998 transitions. [2023-12-20 14:54:05,220 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) [2023-12-20 14:54:05,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 3998 transitions. [2023-12-20 14:54:05,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 14:54:05,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:05,222 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] [2023-12-20 14:54:05,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:54:05,222 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:05,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:05,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1802372499, now seen corresponding path program 1 times [2023-12-20 14:54:05,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:05,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122266598] [2023-12-20 14:54:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:05,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:05,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:05,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:05,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:05,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:05,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:05,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:54:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:05,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:54:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:05,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 14:54:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 14:54:05,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:05,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122266598] [2023-12-20 14:54:05,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122266598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:05,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:05,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:54:05,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920468573] [2023-12-20 14:54:05,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:05,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:54:05,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:05,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:54:05,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:54:05,295 INFO L87 Difference]: Start difference. First operand 3006 states and 3998 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 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) [2023-12-20 14:54:05,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:05,978 INFO L93 Difference]: Finished difference Result 4463 states and 5855 transitions. [2023-12-20 14:54:05,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:54:05,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 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 80 [2023-12-20 14:54:05,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:05,988 INFO L225 Difference]: With dead ends: 4463 [2023-12-20 14:54:05,988 INFO L226 Difference]: Without dead ends: 1773 [2023-12-20 14:54:05,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:54:05,995 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 925 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:05,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1059 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 14:54:05,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2023-12-20 14:54:06,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1660. [2023-12-20 14:54:06,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 1315 states have (on average 1.3581749049429659) internal successors, (1786), 1336 states have internal predecessors, (1786), 190 states have call successors, (190), 121 states have call predecessors, (190), 153 states have return successors, (236), 204 states have call predecessors, (236), 186 states have call successors, (236) [2023-12-20 14:54:06,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2212 transitions. [2023-12-20 14:54:06,115 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2212 transitions. Word has length 80 [2023-12-20 14:54:06,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:06,115 INFO L495 AbstractCegarLoop]: Abstraction has 1660 states and 2212 transitions. [2023-12-20 14:54:06,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 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) [2023-12-20 14:54:06,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2212 transitions. [2023-12-20 14:54:06,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-20 14:54:06,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:06,116 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] [2023-12-20 14:54:06,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:54:06,117 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:06,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:06,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1006521576, now seen corresponding path program 1 times [2023-12-20 14:54:06,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:06,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12018544] [2023-12-20 14:54:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:06,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:06,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:06,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:06,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:06,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:06,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:06,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:54:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:06,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:54:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:06,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 14:54:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:54:06,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:06,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12018544] [2023-12-20 14:54:06,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12018544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:06,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:06,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 14:54:06,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214393277] [2023-12-20 14:54:06,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:06,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 14:54:06,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:06,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 14:54:06,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:54:06,249 INFO L87 Difference]: Start difference. First operand 1660 states and 2212 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) [2023-12-20 14:54:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:07,746 INFO L93 Difference]: Finished difference Result 3881 states and 5098 transitions. [2023-12-20 14:54:07,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-20 14:54:07,747 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 [2023-12-20 14:54:07,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:07,759 INFO L225 Difference]: With dead ends: 3881 [2023-12-20 14:54:07,759 INFO L226 Difference]: Without dead ends: 2396 [2023-12-20 14:54:07,763 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 [2023-12-20 14:54:07,763 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 2570 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2611 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:07,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2611 Valid, 1501 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:54:07,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2023-12-20 14:54:07,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2232. [2023-12-20 14:54:07,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 1733 states have (on average 1.315060588574726) internal successors, (2279), 1762 states have internal predecessors, (2279), 267 states have call successors, (267), 169 states have call predecessors, (267), 230 states have return successors, (367), 302 states have call predecessors, (367), 263 states have call successors, (367) [2023-12-20 14:54:07,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 2913 transitions. [2023-12-20 14:54:07,903 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 2913 transitions. Word has length 81 [2023-12-20 14:54:07,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:07,903 INFO L495 AbstractCegarLoop]: Abstraction has 2232 states and 2913 transitions. [2023-12-20 14:54:07,903 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) [2023-12-20 14:54:07,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 2913 transitions. [2023-12-20 14:54:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 14:54:07,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:07,906 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] [2023-12-20 14:54:07,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:54:07,907 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:07,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:07,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1763909525, now seen corresponding path program 1 times [2023-12-20 14:54:07,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:07,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199598477] [2023-12-20 14:54:07,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:07,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-20 14:54:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-20 14:54:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-12-20 14:54:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 14:54:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-20 14:54:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 14:54:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 14:54:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 14:54:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-20 14:54:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-20 14:54:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-20 14:54:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 14:54:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-20 14:54:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-20 14:54:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-20 14:54:08,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:08,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199598477] [2023-12-20 14:54:08,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199598477] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:54:08,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842570079] [2023-12-20 14:54:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:08,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:54:08,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:54:08,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:54:08,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 14:54:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:08,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 14:54:08,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:54:08,425 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-20 14:54:08,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 14:54:08,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842570079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:08,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 14:54:08,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-12-20 14:54:08,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723912272] [2023-12-20 14:54:08,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:08,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:54:08,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:08,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:54:08,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:54:08,427 INFO L87 Difference]: Start difference. First operand 2232 states and 2913 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) [2023-12-20 14:54:08,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:08,697 INFO L93 Difference]: Finished difference Result 5828 states and 7412 transitions. [2023-12-20 14:54:08,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:54:08,697 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 [2023-12-20 14:54:08,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:08,721 INFO L225 Difference]: With dead ends: 5828 [2023-12-20 14:54:08,721 INFO L226 Difference]: Without dead ends: 3982 [2023-12-20 14:54:08,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:54:08,727 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 57 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:08,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1157 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:54:08,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2023-12-20 14:54:08,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3942. [2023-12-20 14:54:09,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3030 states have (on average 1.2782178217821782) internal successors, (3873), 3082 states have internal predecessors, (3873), 474 states have call successors, (474), 330 states have call predecessors, (474), 436 states have return successors, (635), 531 states have call predecessors, (635), 470 states have call successors, (635) [2023-12-20 14:54:09,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 4982 transitions. [2023-12-20 14:54:09,021 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 4982 transitions. Word has length 145 [2023-12-20 14:54:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:09,023 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 4982 transitions. [2023-12-20 14:54:09,023 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) [2023-12-20 14:54:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 4982 transitions. [2023-12-20 14:54:09,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 14:54:09,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:09,026 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] [2023-12-20 14:54:09,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 14:54:09,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-20 14:54:09,237 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:09,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:09,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1791222778, now seen corresponding path program 1 times [2023-12-20 14:54:09,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:09,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393073453] [2023-12-20 14:54:09,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:09,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:09,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:09,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:54:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:09,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:54:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:54:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:09,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:54:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:54:09,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:09,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393073453] [2023-12-20 14:54:09,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393073453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:09,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:09,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:54:09,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559693633] [2023-12-20 14:54:09,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:09,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:54:09,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:09,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:54:09,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:54:09,419 INFO L87 Difference]: Start difference. First operand 3942 states and 4982 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:11,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:11,451 INFO L93 Difference]: Finished difference Result 4354 states and 5669 transitions. [2023-12-20 14:54:11,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:54:11,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (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 142 [2023-12-20 14:54:11,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:11,469 INFO L225 Difference]: With dead ends: 4354 [2023-12-20 14:54:11,469 INFO L226 Difference]: Without dead ends: 4052 [2023-12-20 14:54:11,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:54:11,472 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 950 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:11,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 801 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 14:54:11,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2023-12-20 14:54:11,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 3942. [2023-12-20 14:54:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3030 states have (on average 1.277887788778878) internal successors, (3872), 3082 states have internal predecessors, (3872), 474 states have call successors, (474), 330 states have call predecessors, (474), 436 states have return successors, (635), 531 states have call predecessors, (635), 470 states have call successors, (635) [2023-12-20 14:54:11,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 4981 transitions. [2023-12-20 14:54:11,905 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 4981 transitions. Word has length 142 [2023-12-20 14:54:11,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:11,905 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 4981 transitions. [2023-12-20 14:54:11,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:11,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 4981 transitions. [2023-12-20 14:54:11,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 14:54:11,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:11,907 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] [2023-12-20 14:54:11,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:54:11,908 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:11,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:11,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1104790916, now seen corresponding path program 1 times [2023-12-20 14:54:11,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:11,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008213229] [2023-12-20 14:54:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:11,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:11,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:12,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:54:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:12,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:54:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:12,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:54:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:12,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:54:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:54:12,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:12,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008213229] [2023-12-20 14:54:12,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008213229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:12,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:12,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 14:54:12,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488379542] [2023-12-20 14:54:12,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:12,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 14:54:12,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:12,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 14:54:12,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:54:12,069 INFO L87 Difference]: Start difference. First operand 3942 states and 4981 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:14,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:14,062 INFO L93 Difference]: Finished difference Result 4346 states and 5652 transitions. [2023-12-20 14:54:14,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 14:54:14,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (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 142 [2023-12-20 14:54:14,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:14,077 INFO L225 Difference]: With dead ends: 4346 [2023-12-20 14:54:14,077 INFO L226 Difference]: Without dead ends: 4052 [2023-12-20 14:54:14,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:54:14,080 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 941 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:14,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 799 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 14:54:14,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2023-12-20 14:54:14,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 3942. [2023-12-20 14:54:14,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3942 states, 3030 states have (on average 1.2775577557755775) internal successors, (3871), 3082 states have internal predecessors, (3871), 474 states have call successors, (474), 330 states have call predecessors, (474), 436 states have return successors, (635), 531 states have call predecessors, (635), 470 states have call successors, (635) [2023-12-20 14:54:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 4980 transitions. [2023-12-20 14:54:14,559 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 4980 transitions. Word has length 142 [2023-12-20 14:54:14,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:14,560 INFO L495 AbstractCegarLoop]: Abstraction has 3942 states and 4980 transitions. [2023-12-20 14:54:14,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:14,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 4980 transitions. [2023-12-20 14:54:14,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 14:54:14,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:14,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:14,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:54:14,562 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:14,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:14,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1539296514, now seen corresponding path program 1 times [2023-12-20 14:54:14,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:14,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060366049] [2023-12-20 14:54:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:14,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:14,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:14,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:54:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:14,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:54:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:14,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:54:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:14,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:54:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:54:14,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:14,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060366049] [2023-12-20 14:54:14,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060366049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:14,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:14,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 14:54:14,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407563440] [2023-12-20 14:54:14,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:14,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 14:54:14,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:14,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 14:54:14,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 14:54:14,758 INFO L87 Difference]: Start difference. First operand 3942 states and 4980 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:17,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:17,363 INFO L93 Difference]: Finished difference Result 4759 states and 6342 transitions. [2023-12-20 14:54:17,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 14:54:17,364 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (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 142 [2023-12-20 14:54:17,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:17,377 INFO L225 Difference]: With dead ends: 4759 [2023-12-20 14:54:17,377 INFO L226 Difference]: Without dead ends: 4468 [2023-12-20 14:54:17,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-20 14:54:17,380 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 1494 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 2156 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:17,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 1163 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2156 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 14:54:17,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4468 states. [2023-12-20 14:54:17,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4468 to 4247. [2023-12-20 14:54:17,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4247 states, 3309 states have (on average 1.308854638863705) internal successors, (4331), 3362 states have internal predecessors, (4331), 493 states have call successors, (493), 336 states have call predecessors, (493), 443 states have return successors, (657), 550 states have call predecessors, (657), 489 states have call successors, (657) [2023-12-20 14:54:17,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 5481 transitions. [2023-12-20 14:54:17,860 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 5481 transitions. Word has length 142 [2023-12-20 14:54:17,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:17,861 INFO L495 AbstractCegarLoop]: Abstraction has 4247 states and 5481 transitions. [2023-12-20 14:54:17,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 4 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:17,861 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 5481 transitions. [2023-12-20 14:54:17,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 14:54:17,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:17,863 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] [2023-12-20 14:54:17,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:54:17,863 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:17,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:17,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1029322818, now seen corresponding path program 1 times [2023-12-20 14:54:17,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:17,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138932130] [2023-12-20 14:54:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:17,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:54:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:18,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:54:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:54:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:18,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:54:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:54:18,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:18,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138932130] [2023-12-20 14:54:18,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138932130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:18,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:18,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:18,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488750278] [2023-12-20 14:54:18,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:18,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:18,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:18,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:18,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:18,097 INFO L87 Difference]: Start difference. First operand 4247 states and 5481 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:21,549 INFO L93 Difference]: Finished difference Result 5494 states and 7560 transitions. [2023-12-20 14:54:21,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:54:21,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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 142 [2023-12-20 14:54:21,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:21,565 INFO L225 Difference]: With dead ends: 5494 [2023-12-20 14:54:21,565 INFO L226 Difference]: Without dead ends: 4898 [2023-12-20 14:54:21,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:54:21,568 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1519 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:21,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 2081 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 14:54:21,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2023-12-20 14:54:21,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 4529. [2023-12-20 14:54:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4529 states, 3565 states have (on average 1.3309957924263676) internal successors, (4745), 3619 states have internal predecessors, (4745), 512 states have call successors, (512), 342 states have call predecessors, (512), 450 states have return successors, (678), 570 states have call predecessors, (678), 508 states have call successors, (678) [2023-12-20 14:54:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 5935 transitions. [2023-12-20 14:54:22,001 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 5935 transitions. Word has length 142 [2023-12-20 14:54:22,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:22,001 INFO L495 AbstractCegarLoop]: Abstraction has 4529 states and 5935 transitions. [2023-12-20 14:54:22,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:22,002 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 5935 transitions. [2023-12-20 14:54:22,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 14:54:22,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:22,004 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] [2023-12-20 14:54:22,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:54:22,004 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:22,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:22,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1021086080, now seen corresponding path program 1 times [2023-12-20 14:54:22,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:22,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915733091] [2023-12-20 14:54:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:22,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:22,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:54:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:22,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:54:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:22,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:54:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:22,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:54:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:54:22,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:22,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915733091] [2023-12-20 14:54:22,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915733091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:22,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:22,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:22,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177324602] [2023-12-20 14:54:22,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:22,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:22,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:22,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:22,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:22,216 INFO L87 Difference]: Start difference. First operand 4529 states and 5935 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:25,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:25,794 INFO L93 Difference]: Finished difference Result 6571 states and 9334 transitions. [2023-12-20 14:54:25,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:54:25,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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 142 [2023-12-20 14:54:25,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:25,811 INFO L225 Difference]: With dead ends: 6571 [2023-12-20 14:54:25,811 INFO L226 Difference]: Without dead ends: 5693 [2023-12-20 14:54:25,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:54:25,819 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1517 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3477 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:25,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 2079 Invalid, 3580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3477 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 14:54:25,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2023-12-20 14:54:26,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 5094. [2023-12-20 14:54:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 4078 states have (on average 1.3668464933791074) internal successors, (5574), 4134 states have internal predecessors, (5574), 550 states have call successors, (550), 354 states have call predecessors, (550), 464 states have return successors, (724), 610 states have call predecessors, (724), 546 states have call successors, (724) [2023-12-20 14:54:26,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 6848 transitions. [2023-12-20 14:54:26,238 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 6848 transitions. Word has length 142 [2023-12-20 14:54:26,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:26,239 INFO L495 AbstractCegarLoop]: Abstraction has 5094 states and 6848 transitions. [2023-12-20 14:54:26,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:26,239 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 6848 transitions. [2023-12-20 14:54:26,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 14:54:26,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:26,241 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] [2023-12-20 14:54:26,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:54:26,241 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:26,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:26,242 INFO L85 PathProgramCache]: Analyzing trace with hash -533038974, now seen corresponding path program 1 times [2023-12-20 14:54:26,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:26,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708113463] [2023-12-20 14:54:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:26,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:26,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:26,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:54:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:26,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:54:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:26,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:54:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:26,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:54:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:26,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:54:26,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:26,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708113463] [2023-12-20 14:54:26,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708113463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:26,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:26,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:26,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750936862] [2023-12-20 14:54:26,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:26,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:26,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:26,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:26,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:26,444 INFO L87 Difference]: Start difference. First operand 5094 states and 6848 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:30,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:30,177 INFO L93 Difference]: Finished difference Result 8636 states and 12719 transitions. [2023-12-20 14:54:30,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:54:30,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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 142 [2023-12-20 14:54:30,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:30,198 INFO L225 Difference]: With dead ends: 8636 [2023-12-20 14:54:30,198 INFO L226 Difference]: Without dead ends: 7193 [2023-12-20 14:54:30,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:54:30,205 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1513 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3468 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:30,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 2079 Invalid, 3571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3468 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 14:54:30,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7193 states. [2023-12-20 14:54:30,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7193 to 6225. [2023-12-20 14:54:30,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6225 states, 5105 states have (on average 1.4166503428011754) internal successors, (7232), 5165 states have internal predecessors, (7232), 626 states have call successors, (626), 378 states have call predecessors, (626), 492 states have return successors, (822), 690 states have call predecessors, (822), 622 states have call successors, (822) [2023-12-20 14:54:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6225 states to 6225 states and 8680 transitions. [2023-12-20 14:54:30,703 INFO L78 Accepts]: Start accepts. Automaton has 6225 states and 8680 transitions. Word has length 142 [2023-12-20 14:54:30,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:30,704 INFO L495 AbstractCegarLoop]: Abstraction has 6225 states and 8680 transitions. [2023-12-20 14:54:30,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 6225 states and 8680 transitions. [2023-12-20 14:54:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 14:54:30,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:30,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:54:30,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:54:30,708 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:30,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:30,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1625674176, now seen corresponding path program 1 times [2023-12-20 14:54:30,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:30,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191376328] [2023-12-20 14:54:30,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:30,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:54:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:54:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:54:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:54:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:54:30,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:30,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191376328] [2023-12-20 14:54:30,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191376328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:30,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:30,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:30,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817883720] [2023-12-20 14:54:30,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:30,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:30,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:30,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:30,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:30,922 INFO L87 Difference]: Start difference. First operand 6225 states and 8680 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:34,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:34,602 INFO L93 Difference]: Finished difference Result 12765 states and 19505 transitions. [2023-12-20 14:54:34,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:54:34,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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 142 [2023-12-20 14:54:34,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:34,629 INFO L225 Difference]: With dead ends: 12765 [2023-12-20 14:54:34,630 INFO L226 Difference]: Without dead ends: 10191 [2023-12-20 14:54:34,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:54:34,641 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1509 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3459 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:34,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 2079 Invalid, 3562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3459 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 14:54:34,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10191 states. [2023-12-20 14:54:35,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10191 to 8492. [2023-12-20 14:54:35,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8492 states, 7164 states have (on average 1.4731993299832495) internal successors, (10554), 7232 states have internal predecessors, (10554), 778 states have call successors, (778), 426 states have call predecessors, (778), 548 states have return successors, (1036), 850 states have call predecessors, (1036), 774 states have call successors, (1036) [2023-12-20 14:54:35,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8492 states to 8492 states and 12368 transitions. [2023-12-20 14:54:35,269 INFO L78 Accepts]: Start accepts. Automaton has 8492 states and 12368 transitions. Word has length 142 [2023-12-20 14:54:35,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:35,270 INFO L495 AbstractCegarLoop]: Abstraction has 8492 states and 12368 transitions. [2023-12-20 14:54:35,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:35,270 INFO L276 IsEmpty]: Start isEmpty. Operand 8492 states and 12368 transitions. [2023-12-20 14:54:35,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 14:54:35,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:35,275 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] [2023-12-20 14:54:35,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:54:35,275 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:35,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:35,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1387120834, now seen corresponding path program 1 times [2023-12-20 14:54:35,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:35,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216916266] [2023-12-20 14:54:35,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:35,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:54:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:54:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:54:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:54:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:54:35,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:35,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216916266] [2023-12-20 14:54:35,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216916266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:35,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:35,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:35,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935193807] [2023-12-20 14:54:35,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:35,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:35,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:35,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:35,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:35,486 INFO L87 Difference]: Start difference. First operand 8492 states and 12368 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:39,121 INFO L93 Difference]: Finished difference Result 21022 states and 33135 transitions. [2023-12-20 14:54:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:54:39,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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 142 [2023-12-20 14:54:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:39,174 INFO L225 Difference]: With dead ends: 21022 [2023-12-20 14:54:39,174 INFO L226 Difference]: Without dead ends: 16181 [2023-12-20 14:54:39,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:54:39,194 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1511 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3445 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:39,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 2079 Invalid, 3548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3445 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 14:54:39,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16181 states. [2023-12-20 14:54:40,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16181 to 13039. [2023-12-20 14:54:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13039 states, 11295 states have (on average 1.524214254094732) internal successors, (17216), 11379 states have internal predecessors, (17216), 1082 states have call successors, (1082), 522 states have call predecessors, (1082), 660 states have return successors, (1518), 1170 states have call predecessors, (1518), 1078 states have call successors, (1518) [2023-12-20 14:54:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13039 states to 13039 states and 19816 transitions. [2023-12-20 14:54:40,058 INFO L78 Accepts]: Start accepts. Automaton has 13039 states and 19816 transitions. Word has length 142 [2023-12-20 14:54:40,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:40,059 INFO L495 AbstractCegarLoop]: Abstraction has 13039 states and 19816 transitions. [2023-12-20 14:54:40,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:40,059 INFO L276 IsEmpty]: Start isEmpty. Operand 13039 states and 19816 transitions. [2023-12-20 14:54:40,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 14:54:40,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:40,067 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] [2023-12-20 14:54:40,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:54:40,068 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:40,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:40,068 INFO L85 PathProgramCache]: Analyzing trace with hash -455354880, now seen corresponding path program 1 times [2023-12-20 14:54:40,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:40,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319305218] [2023-12-20 14:54:40,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:40,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:40,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:54:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:40,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:54:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:40,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:54:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:40,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:54:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:54:40,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:40,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319305218] [2023-12-20 14:54:40,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319305218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:40,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:40,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:40,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594914411] [2023-12-20 14:54:40,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:40,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:40,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:40,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:40,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:40,339 INFO L87 Difference]: Start difference. First operand 13039 states and 19816 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:44,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:44,043 INFO L93 Difference]: Finished difference Result 37504 states and 60525 transitions. [2023-12-20 14:54:44,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:54:44,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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 142 [2023-12-20 14:54:44,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:44,141 INFO L225 Difference]: With dead ends: 37504 [2023-12-20 14:54:44,142 INFO L226 Difference]: Without dead ends: 28116 [2023-12-20 14:54:44,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:54:44,178 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1605 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 2882 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 3021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:44,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 1436 Invalid, 3021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2882 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 14:54:44,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28116 states. [2023-12-20 14:54:45,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28116 to 22195. [2023-12-20 14:54:45,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22195 states, 19619 states have (on average 1.5621591314542025) internal successors, (30648), 19735 states have internal predecessors, (30648), 1690 states have call successors, (1690), 714 states have call predecessors, (1690), 884 states have return successors, (2644), 1810 states have call predecessors, (2644), 1686 states have call successors, (2644) [2023-12-20 14:54:45,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22195 states to 22195 states and 34982 transitions. [2023-12-20 14:54:45,598 INFO L78 Accepts]: Start accepts. Automaton has 22195 states and 34982 transitions. Word has length 142 [2023-12-20 14:54:45,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:45,598 INFO L495 AbstractCegarLoop]: Abstraction has 22195 states and 34982 transitions. [2023-12-20 14:54:45,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:45,599 INFO L276 IsEmpty]: Start isEmpty. Operand 22195 states and 34982 transitions. [2023-12-20 14:54:45,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 14:54:45,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:45,611 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] [2023-12-20 14:54:45,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:54:45,611 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:45,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:45,612 INFO L85 PathProgramCache]: Analyzing trace with hash -787998018, now seen corresponding path program 1 times [2023-12-20 14:54:45,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:45,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754791996] [2023-12-20 14:54:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:45,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:45,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:45,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:54:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:45,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:54:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:45,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:54:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:45,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:54:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:54:45,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:45,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754791996] [2023-12-20 14:54:45,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754791996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:45,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:45,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:45,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321077052] [2023-12-20 14:54:45,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:45,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:45,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:45,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:45,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:45,803 INFO L87 Difference]: Start difference. First operand 22195 states and 34982 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:50,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:50,596 INFO L93 Difference]: Finished difference Result 70534 states and 116033 transitions. [2023-12-20 14:54:50,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:54:50,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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 142 [2023-12-20 14:54:50,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:54:50,775 INFO L225 Difference]: With dead ends: 70534 [2023-12-20 14:54:50,776 INFO L226 Difference]: Without dead ends: 51990 [2023-12-20 14:54:50,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:54:50,824 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1506 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3404 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:54:50,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 2079 Invalid, 3507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3404 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 14:54:50,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51990 states. [2023-12-20 14:54:53,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51990 to 40568. [2023-12-20 14:54:53,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40568 states, 36328 states have (on average 1.5856088967187845) internal successors, (57602), 36508 states have internal predecessors, (57602), 2906 states have call successors, (2906), 1098 states have call predecessors, (2906), 1332 states have return successors, (5382), 3090 states have call predecessors, (5382), 2902 states have call successors, (5382) [2023-12-20 14:54:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40568 states to 40568 states and 65890 transitions. [2023-12-20 14:54:53,422 INFO L78 Accepts]: Start accepts. Automaton has 40568 states and 65890 transitions. Word has length 142 [2023-12-20 14:54:53,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:54:53,422 INFO L495 AbstractCegarLoop]: Abstraction has 40568 states and 65890 transitions. [2023-12-20 14:54:53,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:53,422 INFO L276 IsEmpty]: Start isEmpty. Operand 40568 states and 65890 transitions. [2023-12-20 14:54:53,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 14:54:53,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:54:53,446 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] [2023-12-20 14:54:53,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:54:53,446 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:54:53,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:54:53,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1140934208, now seen corresponding path program 1 times [2023-12-20 14:54:53,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:54:53,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20130671] [2023-12-20 14:54:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:54:53,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:54:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:53,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:54:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:53,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:54:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:53,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:54:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:53,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:54:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:53,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:54:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:54:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:54:53,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:54:53,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20130671] [2023-12-20 14:54:53,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20130671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:54:53,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:54:53,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:54:53,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147246356] [2023-12-20 14:54:53,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:54:53,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:54:53,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:54:53,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:54:53,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:54:53,636 INFO L87 Difference]: Start difference. First operand 40568 states and 65890 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:54:59,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:54:59,663 INFO L93 Difference]: Finished difference Result 136593 states and 228895 transitions. [2023-12-20 14:54:59,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:54:59,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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 142 [2023-12-20 14:54:59,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:55:00,118 INFO L225 Difference]: With dead ends: 136593 [2023-12-20 14:55:00,119 INFO L226 Difference]: Without dead ends: 99676 [2023-12-20 14:55:00,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:55:00,208 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1505 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3391 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:55:00,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 2079 Invalid, 3494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3391 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 14:55:00,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99676 states. [2023-12-20 14:55:04,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99676 to 77441. [2023-12-20 14:55:04,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77441 states, 69873 states have (on average 1.5986146293990526) internal successors, (111700), 70181 states have internal predecessors, (111700), 5338 states have call successors, (5338), 1866 states have call predecessors, (5338), 2228 states have return successors, (12316), 5650 states have call predecessors, (12316), 5334 states have call successors, (12316) [2023-12-20 14:55:04,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77441 states to 77441 states and 129354 transitions. [2023-12-20 14:55:04,668 INFO L78 Accepts]: Start accepts. Automaton has 77441 states and 129354 transitions. Word has length 142 [2023-12-20 14:55:04,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:55:04,669 INFO L495 AbstractCegarLoop]: Abstraction has 77441 states and 129354 transitions. [2023-12-20 14:55:04,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:55:04,669 INFO L276 IsEmpty]: Start isEmpty. Operand 77441 states and 129354 transitions. [2023-12-20 14:55:04,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 14:55:04,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:55:04,717 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] [2023-12-20 14:55:04,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:55:04,717 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:55:04,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:55:04,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1152146818, now seen corresponding path program 1 times [2023-12-20 14:55:04,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:55:04,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496296978] [2023-12-20 14:55:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:55:04,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:55:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:04,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:55:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:04,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:55:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:05,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:55:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:55:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:05,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:55:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:55:05,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:55:05,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496296978] [2023-12-20 14:55:05,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496296978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:55:05,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:55:05,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:55:05,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898732460] [2023-12-20 14:55:05,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:55:05,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:55:05,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:55:05,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:55:05,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:55:05,065 INFO L87 Difference]: Start difference. First operand 77441 states and 129354 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:55:14,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:55:14,350 INFO L93 Difference]: Finished difference Result 268712 states and 460261 transitions. [2023-12-20 14:55:14,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 14:55:14,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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 142 [2023-12-20 14:55:14,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:55:15,286 INFO L225 Difference]: With dead ends: 268712 [2023-12-20 14:55:15,286 INFO L226 Difference]: Without dead ends: 194922 [2023-12-20 14:55:15,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-20 14:55:15,583 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1504 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 3378 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 3378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:55:15,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 2079 Invalid, 3481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 3378 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 14:55:15,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194922 states. [2023-12-20 14:55:23,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194922 to 151442. [2023-12-20 14:55:23,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151442 states, 137218 states have (on average 1.6053141716101387) internal successors, (220278), 137782 states have internal predecessors, (220278), 10202 states have call successors, (10202), 3402 states have call predecessors, (10202), 4020 states have return successors, (30558), 10770 states have call predecessors, (30558), 10198 states have call successors, (30558) [2023-12-20 14:55:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151442 states to 151442 states and 261038 transitions. [2023-12-20 14:55:24,543 INFO L78 Accepts]: Start accepts. Automaton has 151442 states and 261038 transitions. Word has length 142 [2023-12-20 14:55:24,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:55:24,544 INFO L495 AbstractCegarLoop]: Abstraction has 151442 states and 261038 transitions. [2023-12-20 14:55:24,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:55:24,544 INFO L276 IsEmpty]: Start isEmpty. Operand 151442 states and 261038 transitions. [2023-12-20 14:55:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 14:55:24,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:55:24,639 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] [2023-12-20 14:55:24,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:55:24,640 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:55:24,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:55:24,640 INFO L85 PathProgramCache]: Analyzing trace with hash 574998144, now seen corresponding path program 1 times [2023-12-20 14:55:24,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:55:24,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687428621] [2023-12-20 14:55:24,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:55:24,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:55:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:24,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:55:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:24,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:55:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:24,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:55:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:24,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:55:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:24,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:55:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:55:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:55:24,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:55:24,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687428621] [2023-12-20 14:55:24,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687428621] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:55:24,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:55:24,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:55:24,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122570812] [2023-12-20 14:55:24,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:55:24,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:55:24,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:55:24,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:55:24,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:55:24,858 INFO L87 Difference]: Start difference. First operand 151442 states and 261038 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:55:41,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:55:41,138 INFO L93 Difference]: Finished difference Result 598487 states and 1046093 transitions. [2023-12-20 14:55:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 14:55:41,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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 142 [2023-12-20 14:55:41,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:55:43,425 INFO L225 Difference]: With dead ends: 598487 [2023-12-20 14:55:43,425 INFO L226 Difference]: Without dead ends: 450696 [2023-12-20 14:55:43,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:55:43,998 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1595 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 3957 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 4062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:55:43,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 2072 Invalid, 4062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3957 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 14:55:44,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450696 states. [2023-12-20 14:55:59,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450696 to 298931. [2023-12-20 14:56:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298931 states, 271907 states have (on average 1.6096974333135963) internal successors, (437688), 272983 states have internal predecessors, (437688), 19418 states have call successors, (19418), 6474 states have call predecessors, (19418), 7604 states have return successors, (79652), 20498 states have call predecessors, (79652), 19414 states have call successors, (79652) [2023-12-20 14:56:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298931 states to 298931 states and 536758 transitions. [2023-12-20 14:56:02,601 INFO L78 Accepts]: Start accepts. Automaton has 298931 states and 536758 transitions. Word has length 142 [2023-12-20 14:56:02,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:56:02,601 INFO L495 AbstractCegarLoop]: Abstraction has 298931 states and 536758 transitions. [2023-12-20 14:56:02,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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) [2023-12-20 14:56:02,601 INFO L276 IsEmpty]: Start isEmpty. Operand 298931 states and 536758 transitions. [2023-12-20 14:56:02,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-20 14:56:02,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:56:02,753 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] [2023-12-20 14:56:02,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:56:02,754 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:56:02,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:56:02,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1046354494, now seen corresponding path program 1 times [2023-12-20 14:56:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:56:02,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753159739] [2023-12-20 14:56:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:56:02,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:56:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 14:56:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:02,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 14:56:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-12-20 14:56:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:02,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 14:56:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:02,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 14:56:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:56:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:56:02,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:56:02,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753159739] [2023-12-20 14:56:02,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753159739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:56:02,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:56:02,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 14:56:02,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617257387] [2023-12-20 14:56:02,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:56:02,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 14:56:02,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:56:02,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 14:56:02,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 14:56:02,945 INFO L87 Difference]: Start difference. First operand 298931 states and 536758 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (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)